# National Register of Historic Places listings in northern New Castle County, Delaware

This is a list of properties on the National Register of Historic Places in northern New Castle County, Delaware.
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This is intended to be a complete list of the properties and districts on National Register of Historic Places in New Castle County, Delaware north of the Chesapeake and Delaware Canal, excluding the city of Wilmington. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in a map.
There are 400 properties and districts listed on the National Register in the county. Of those, 224 sites are located outside Wilmington and north of the Chesapeake and Delaware Canal, and are listed here, including five sites that are further designated as National Historic Landmarks.
This National Park Service list is complete through NPS recent listings posted February 28, 2025.
* Wilmington (New Castle) | Northern New Castle | Southern New Castle | Kent | Sussex

## Current listings

| | Name on the Register | Image | Date listed | Location | City or town | Description |
| 1 | Academy of Newark | Academy of Newark | May 24, 1976 (#76000573) | 105 E. Main St. 39°40′58″N 75°44′57″W﻿ / ﻿39.682898°N 75.749056°W﻿ / 39.682898; -75.749056﻿ (Academy of Newark) | Newark | University of Delaware |
| 2 | Aetna Hose, Hook and Ladder Company Fire Station No. 1 | Aetna Hose, Hook and Ladder Company Fire Station No. 1 | May 7, 1982 (#82002335) | 26 Academy St. 39°40′57″N 75°44′59″W﻿ / ﻿39.682413°N 75.749623°W﻿ / 39.682413; -75.749623﻿ (Aetna Hose, Hook and Ladder Company Fire Station No. 1) | Newark | |
| 3 | Aetna Hose, Hook and Ladder Company, Fire Station No. 2 | Aetna Hose, Hook and Ladder Company, Fire Station No. 2 | May 7, 1982 (#82002334) | 31 Academy St. 39°40′56″N 75°44′57″W﻿ / ﻿39.682181°N 75.749142°W﻿ / 39.682181; -75.749142﻿ (Aetna Hose, Hook and Ladder Company, Fire Station No. 2) | Newark | |
| 4 | African Union Church and Cemetery of Iron Hill | African Union Church and Cemetery of Iron Hill | September 9, 2021 (#100006887) | 1578 Whittaker Rd. 39°37′59″N 75°45′41″W﻿ / ﻿39.6330°N 75.7613°W﻿ / 39.6330; -75.7613﻿ (African Union Church and Cemetery of Iron Hill) | Pencader Hundred, Newark vicinity | |
| 5 | Aiken's Tavern Historic District | Aiken's Tavern Historic District More images | December 6, 1977 (#77000388) | Junction of U.S. Route 40 and Delaware Route 896 39°36′23″N 75°44′45″W﻿ / ﻿39.606389°N 75.745833°W﻿ / 39.606389; -75.745833﻿ (Aiken's Tavern Historic District) | Glasgow | |
| 6 | Air Service, Inc. Hangar at Bellanca Airfield | Air Service, Inc. Hangar at Bellanca Airfield More images | June 15, 2005 (#05000601) | 2 Centerpoint Blvd. 39°39′52″N 75°35′13″W﻿ / ﻿39.664307°N 75.586928°W﻿ / 39.664307; -75.586928﻿ (Air Service, Inc. Hangar at Bellanca Airfield) | New Castle | |
| 7 | Charles Allen House | Charles Allen House | August 19, 1983 (#83001348) | 855 Canoe Rd. 39°38′46″N 75°40′40″W﻿ / ﻿39.646111°N 75.677778°W﻿ / 39.646111; -75.677778﻿ (Charles Allen House) | Christiana | |
| 8 | Amstel House | Amstel House More images | May 12, 1977 (#77000386) | 2 E. 4th St. 39°39′38″N 75°33′53″W﻿ / ﻿39.660610°N 75.564853°W﻿ / 39.660610; -75.564853﻿ (Amstel House) | New Castle | |
| 9 | Anderson House | Anderson House | February 24, 1983 (#83001384) | 50 W. Park Pl. 39°40′30″N 75°45′22″W﻿ / ﻿39.674985°N 75.756112°W﻿ / 39.674985; -75.756112﻿ (Anderson House) | Newark | |
| 10 | Archmere | Archmere More images | September 9, 1992 (#92001143) | 3600 Philadelphia Pike 39°48′08″N 75°27′13″W﻿ / ﻿39.802302°N 75.453725°W﻿ / 39.802302; -75.453725﻿ (Archmere) | Claymont | |
| 11 | Ardens Historic District | Ardens Historic District More images | May 30, 2003 (#01001245) | Orleans Rd. at Harvey Rd. 39°48′41″N 75°29′16″W﻿ / ﻿39.811389°N 75.487778°W﻿ / 39.811389; -75.487778﻿ (Ardens Historic District) | Arden | |
| 12 | James Armor House | James Armor House | August 31, 1992 (#92001141) | 3 Courtney Rd. 39°45′42″N 75°36′57″W﻿ / ﻿39.761626°N 75.615885°W﻿ / 39.761626; -75.615885﻿ (James Armor House) | Christiana Hundred | |
| 13 | Armstrong Lodge No. 26, A.F. & A.M. | Armstrong Lodge No. 26, A.F. & A.M. | July 14, 1993 (#93000628) | 112–114 E. Market St. 39°42′49″N 75°36′28″W﻿ / ﻿39.713611°N 75.607778°W﻿ / 39.713611; -75.607778﻿ (Armstrong Lodge No. 26, A.F. & A.M.) | Newport | |
| 14 | A. Armstrong Farm | A. Armstrong Farm | November 13, 1986 (#86003083) | Old Wilmington Rd. west of Brackenville Rd. 39°47′11″N 75°40′28″W﻿ / ﻿39.786389°N 75.674444°W﻿ / 39.786389; -75.674444﻿ (A. Armstrong Farm) | Hockessin | Farm house and barn; demolished before 2002. |
| 15 | Ashland Bridge | Ashland Bridge More images | March 20, 1973 (#73000506) | South of Ashland over Red Clay Creek 39°47′54″N 75°39′28″W﻿ / ﻿39.798275°N 75.657883°W﻿ / 39.798275; -75.657883﻿ (Ashland Bridge) | Ashland | |
| 16 | Auburn Mills Historic District | Auburn Mills Historic District More images | January 22, 1980 (#80000939) | West of Yorklyn on Delaware Route 82 and Benge Road 39°48′28″N 75°40′49″W﻿ / ﻿39.807778°N 75.680278°W﻿ / 39.807778; -75.680278﻿ (Auburn Mills Historic District) | Yorklyn | |
| 17 | Baily House | Baily House | May 7, 1982 (#82002336) | 166 W. Main St. 39°41′03″N 75°45′32″W﻿ / ﻿39.684181°N 75.758851°W﻿ / 39.684181; -75.758851﻿ (Baily House) | Newark | |
| 18 | Bank of Newark Building | Bank of Newark Building | February 24, 1983 (#83001345) | 102 E. Main St. 39°41′01″N 75°44′57″W﻿ / ﻿39.6835°N 75.74924°W﻿ / 39.6835; -75.74924﻿ (Bank of Newark Building) | Newark | |
| 19 | Bartley-Tweed Farm | Bartley-Tweed Farm | November 13, 1986 (#86003084) | 51 Fox Den Rd. 39°43′13″N 75°42′59″W﻿ / ﻿39.720278°N 75.716389°W﻿ / 39.720278; -75.716389﻿ (Bartley-Tweed Farm) | Mill Creek Hundred | |
| 20 | Beaver Valley Rock Shelter Site | Beaver Valley Rock Shelter Site | September 1, 1978 (#78000910) | Address Restricted | Brandywine Hundred | Part of the First State National Historical Park |
| 21 | Bell Farmhouse | Bell Farmhouse | February 24, 1983 (#83001344) | 401 Nottingham Rd. 39°41′15″N 75°46′12″W﻿ / ﻿39.687628°N 75.770127°W﻿ / 39.687628; -75.770127﻿ (Bell Farmhouse) | Newark | |
| 22 | Belmont Hall | Belmont Hall | February 24, 1983 (#83001386) | 302 W. Main St. 39°41′02″N 75°45′39″W﻿ / ﻿39.683809°N 75.760755°W﻿ / 39.683809; -75.760755﻿ (Belmont Hall) | Newark | University of Delaware |
| 23 | Bloomfield | Bloomfield | April 8, 1982 (#82002354) | 4663 Kirkwood St. Georges Road 39°33′20″N 75°39′23″W﻿ / ﻿39.555672°N 75.656263°W﻿ / 39.555672; -75.656263﻿ (Bloomfield) | St. Georges | |
| 24 | Blue Hen Farm | Blue Hen Farm | February 24, 1983 (#83001346) | 505 Stamford Dr. 39°41′45″N 75°45′59″W﻿ / ﻿39.695795°N 75.766449°W﻿ / 39.695795; -75.766449﻿ (Blue Hen Farm) | Newark | |
| 25 | Brandywine Manufacturers Sunday School | Brandywine Manufacturers Sunday School More images | April 13, 1972 (#72000291) | Blacksmith Hill Rd. 39°46′44″N 75°34′35″W﻿ / ﻿39.778889°N 75.576389°W﻿ / 39.778889; -75.576389﻿ (Brandywine Manufacturers Sunday School) | Christiana Hundred | Part of the Hagley Museum |
| 26 | Brandywine Powder Mills District | Brandywine Powder Mills District More images | May 3, 1984 (#84000819) | Delaware Route 141 and the Brandywine River 39°46′48″N 75°34′40″W﻿ / ﻿39.78°N 75.577778°W﻿ / 39.78; -75.577778﻿ (Brandywine Powder Mills District) | Christiana Hundred | Hagley Museum |
| 27 | Breck's Mill Area | Breck's Mill Area More images | November 5, 1971 (#71000230) | Breck's Lane and Creek Rd. 39°46′12″N 75°34′50″W﻿ / ﻿39.769946°N 75.580572°W﻿ / 39.769946; -75.580572﻿ (Breck's Mill Area) | Christiana Hundred | Extends slightly into Wilmington proper |
| 28 | Brindley Farm | Brindley Farm | September 28, 1976 (#76000575) | 3510 Kennett Pike 39°46′13″N 75°35′35″W﻿ / ﻿39.770278°N 75.593056°W﻿ / 39.770278; -75.593056﻿ (Brindley Farm) | Christiana Hundred | |
| 29 | Jacob Broom House | Jacob Broom House More images | December 2, 1974 (#74000602) | 402 Dean Lane 39°46′49″N 75°34′42″W﻿ / ﻿39.780164°N 75.578315°W﻿ / 39.780164; -75.578315﻿ (Jacob Broom House) | Christiana Hundred | |
| 30 | Buena Vista | Buena Vista More images | April 16, 1971 (#71000228) | 661 South DuPont Highway 39°38′02″N 75°38′22″W﻿ / ﻿39.633752°N 75.639539°W﻿ / 39.633752; -75.639539﻿ (Buena Vista) | New Castle Hundred | State of Delaware retreat center |
| 31 | Building at 28–34½ Academy Street | Building at 28–34½ Academy Street | May 7, 1982 (#82002338) | 28–34½ Academy St. 39°40′56″N 75°44′59″W﻿ / ﻿39.682194°N 75.749610°W﻿ / 39.682194; -75.749610﻿ (Building at 28–34½ Academy Street) | Newark | |
| 32 | Building at 140 W. Main Street | Building at 140 W. Main Street | May 7, 1982 (#82002337) | 140 W. Main St. 39°41′02″N 75°45′28″W﻿ / ﻿39.683813°N 75.757790°W﻿ / 39.683813; -75.757790﻿ (Building at 140 W. Main Street) | Newark | |
| 33 | Building at 34 Choate Street | Building at 34 Choate Street | February 24, 1983 (#83001387) | 34 Choate St. 39°41′05″N 75°44′49″W﻿ / ﻿39.684776°N 75.746808°W﻿ / 39.684776; -75.746808﻿ (Building at 34 Choate Street) | Newark | |
| 34 | John Carney Agricultural Complex | John Carney Agricultural Complex | February 25, 2009 (#09000050) | 4300 Thompson Bridge Rd. 39°49′13″N 75°34′00″W﻿ / ﻿39.820386°N 75.566779°W﻿ / 39.820386; -75.566779﻿ (John Carney Agricultural Complex) | Rockland | Part of Brandywine Creek State Park |
| 35 | Carpenter-Lippincott House | Carpenter-Lippincott House | April 13, 1983 (#83001388) | 5620 Kennett Pike 39°49′06″N 75°37′00″W﻿ / ﻿39.818207°N 75.616737°W﻿ / 39.818207; -75.616737﻿ (Carpenter-Lippincott House) | Centreville | |
| 36 | Stuart Randall & Pricilla Kellogg Carswell House | Stuart Randall & Pricilla Kellogg Carswell House | November 22, 2011 (#11000844) | 102 Briar Ln. 39°41′08″N 75°46′11″W﻿ / ﻿39.685556°N 75.769722°W﻿ / 39.685556; -75.769722﻿ (Stuart Randall & Pricilla Kellogg Carswell House) | Newark | |
| 37 | W. Casperson House | W. Casperson House | April 8, 1982 (#82002355) | 1600 Red Lion Rd. 39°35′25″N 75°40′26″W﻿ / ﻿39.590407°N 75.673953°W﻿ / 39.590407; -75.673953﻿ (W. Casperson House) | St. Georges | |
| 38 | Centre Meeting and Schoolhouse | Centre Meeting and Schoolhouse More images | December 16, 1971 (#71000224) | 311 Center Meeting Rd. 39°49′13″N 75°35′58″W﻿ / ﻿39.8204°N 75.5995°W﻿ / 39.8204; -75.5995﻿ (Centre Meeting and Schoolhouse) | Centreville | |
| 39 | Centreville Historic District | Centreville Historic District More images | April 13, 1983 (#83001338) | Kennett Pike and Owls Nest/Twaddell Mill Rd. 39°49′16″N 75°37′00″W﻿ / ﻿39.821111°N 75.616667°W﻿ / 39.821111; -75.616667﻿ (Centreville Historic District) | Centreville | |
| 40 | Chambers House | Chambers House More images | November 29, 1988 (#88003132) | 1475 Creek Road 39°43′38″N 75°46′05″W﻿ / ﻿39.727233°N 75.768026°W﻿ / 39.727233; -75.768026﻿ (Chambers House) | White Clay Creek Hundred | Nature center for White Clay Creek State Park |
| 41 | Chambers House | Chambers House | February 24, 1983 (#83001389) | 196 S. College Ave. 39°40′42″N 75°45′14″W﻿ / ﻿39.678280°N 75.753880°W﻿ / 39.678280; -75.753880﻿ (Chambers House) | Newark | University of Delaware |
| 42 | Joseph Chandler House | Joseph Chandler House | April 13, 1983 (#83001390) | 5826 Kennett Pike 39°49′26″N 75°37′09″W﻿ / ﻿39.823889°N 75.619167°W﻿ / 39.823889; -75.619167﻿ (Joseph Chandler House) | Centreville | |
| 43 | Chelsea | Chelsea | April 8, 1982 (#82002325) | 910 5th St. 39°34′37″N 75°35′56″W﻿ / ﻿39.576892°N 75.598971°W﻿ / 39.576892; -75.598971﻿ (Chelsea) | Delaware City | |
| 44 | Christiana Historic District | Christiana Historic District More images | December 16, 1974 (#74000600) | Junction of Delaware Routes 7 and 273 39°39′55″N 75°39′36″W﻿ / ﻿39.665278°N 75.66°W﻿ / 39.665278; -75.66﻿ (Christiana Historic District) | Christiana | |
| 45 | Abner Cloud House | Abner Cloud House | August 31, 1992 (#92001144) | 14 Ravine Rd. 39°48′54″N 75°28′47″W﻿ / ﻿39.814938°N 75.479831°W﻿ / 39.814938; -75.479831﻿ (Abner Cloud House) | Brandywine Hundred | |
| 46 | Cloud-Reese House | Cloud-Reese House | August 17, 2001 (#01000885) | 2202 Old Kennett Rd. 39°49′20″N 75°39′25″W﻿ / ﻿39.822168°N 75.657008°W﻿ / 39.822168; -75.657008﻿ (Cloud-Reese House) | Christiana Hundred | |
| 47 | Clyde Farm Site | Clyde Farm Site | July 29, 1977 (#77000391) | Southern side of White Clay Creek, north of Interstate 95 39°41′56″N 75°38′12″W﻿ / ﻿39.698889°N 75.636667°W﻿ / 39.698889; -75.636667﻿ (Clyde Farm Site) | Stanton | Paleo-Indian archaeological site |
| 48 | Coffee Run Mission Site | Coffee Run Mission Site More images | April 11, 1973 (#73000509) | 6580 Lancaster Pike 39°46′03″N 75°39′34″W﻿ / ﻿39.7675°N 75.659444°W﻿ / 39.7675; -75.659444﻿ (Coffee Run Mission Site) | Hockessin | One structure destroyed in March 2010 following an arson. |
| 49 | Collison House | Collison House | July 14, 1993 (#93000635) | 21 N. Walnut St. 39°42′53″N 75°36′27″W﻿ / ﻿39.714734°N 75.607437°W﻿ / 39.714734; -75.607437﻿ (Collison House) | Newport | |
| 50 | Cooch's Bridge Historic District | Cooch's Bridge Historic District More images | April 11, 1973 (#73000528) | South of Newark off Delaware Route 896 39°38′24″N 75°44′11″W﻿ / ﻿39.640073°N 75.736409°W﻿ / 39.640073; -75.736409﻿ (Cooch's Bridge Historic District) | Pencader Hundred | |
| 51 | Correll's Farm and Lawn Supply | Correll's Farm and Lawn Supply | April 8, 1982 (#82002327) | 2440 Red Lion Road 39°34′14″N 75°41′50″W﻿ / ﻿39.570542°N 75.697168°W﻿ / 39.570542; -75.697168﻿ (Correll's Farm and Lawn Supply) | Kirkwood | |
| 52 | Cox-Phillips-Mitchell Agricultural Complex | Cox-Phillips-Mitchell Agricultural Complex | March 13, 2017 (#100000729) | 1651 & 1655 Old Wilmington Rd. 39°47′43″N 75°41′54″W﻿ / ﻿39.795267°N 75.698307°W﻿ / 39.795267; -75.698307﻿ (Cox-Phillips-Mitchell Agricultural Complex) | Hockessin | |
| 53 | Curtis Mansion | Curtis Mansion | May 7, 1982 (#82002339) | 183 W. Main St. 39°41′02″N 75°45′37″W﻿ / ﻿39.683895°N 75.760170°W﻿ / 39.683895; -75.760170﻿ (Curtis Mansion) | Newark | English Language Institute of the University of Delaware |
| 54 | Curtis Paper Mill Workers' Houses | Curtis Paper Mill Workers' Houses | May 7, 1982 (#82002340) | Curtis Lane 39°41′27″N 75°44′56″W﻿ / ﻿39.69087°N 75.74889°W﻿ / 39.69087; -75.74889﻿ (Curtis Paper Mill Workers' Houses) | Newark | |
| 55 | Darley House | Darley House | July 2, 1973 (#73000508) | 3701 Philadelphia Pike 39°48′18″N 75°27′15″W﻿ / ﻿39.804881°N 75.454248°W﻿ / 39.804881; -75.454248﻿ (Darley House) | Claymont | |
| 56 | Dauneport House | Dauneport House | September 8, 2022 (#100008081) | 420 Old Kennett Rd. 39°48′38″N 75°37′16″W﻿ / ﻿39.8106°N 75.6211°W﻿ / 39.8106; -75.6211﻿ (Dauneport House) | Wilmington vicinity | |
| 57 | Joseph Dean & Son Woolen Mill | Joseph Dean & Son Woolen Mill | May 22, 1978 (#78000901) | 500 Creek View Rd. 39°41′22″N 75°44′44″W﻿ / ﻿39.689508°N 75.745507°W﻿ / 39.689508; -75.745507﻿ (Joseph Dean & Son Woolen Mill) | Newark | |
| 58 | Deer Park Farm | Deer Park Farm | February 24, 1983 (#83001347) | 48 W. Park Pl. 39°40′30″N 75°45′21″W﻿ / ﻿39.675°N 75.755833°W﻿ / 39.675; -75.755833﻿ (Deer Park Farm) | Newark | Demolished |
| 59 | Deer Park Hotel | Deer Park Hotel | May 7, 1982 (#82002341) | 108 W. Main St. 39°40′59″N 75°45′22″W﻿ / ﻿39.683184°N 75.755982°W﻿ / 39.683184; -75.755982﻿ (Deer Park Hotel) | Newark | |
| 60 | Delaware Boundary Markers | Delaware Boundary Markers More images | February 18, 1975 (#75002101) | Delaware state boundary lines with Maryland and Pennsylvania 39°43′20″N 75°47′19″W﻿ / ﻿39.722201°N 75.788594°W﻿ / 39.722201; -75.788594﻿ (Delaware Boundary Markers) | Not applicable | |
| 61 | Delaware City Historic District | Delaware City Historic District More images | December 15, 1983 (#83003515) | Roughly bounded by the Delaware River, Dragon Creek, Delaware Route 9, and the Delaware and Chesapeake Canals 39°34′38″N 75°35′31″W﻿ / ﻿39.577222°N 75.591944°W﻿ / 39.577222; -75.591944﻿ (Delaware City Historic District) | Delaware City | |
| 62 | S. P. Dixon Farm | S. P. Dixon Farm | November 13, 1986 (#86003085) | Barley Mill and Brackenville Rds. 39°47′45″N 75°39′27″W﻿ / ﻿39.795786°N 75.657526°W﻿ / 39.795786; -75.657526﻿ (S. P. Dixon Farm) | Ashland | Part of Ashland Farm (Henry B. du Pont IV estate) |
| 63 | Dragon Run Farm | Dragon Run Farm | April 8, 1982 (#82002328) | 2335 McCoy Rd. 39°33′47″N 75°40′23″W﻿ / ﻿39.562978°N 75.673118°W﻿ / 39.562978; -75.673118﻿ (Dragon Run Farm) | Kirkwood | |
| 64 | David Eastburn Farm | David Eastburn Farm More images | November 13, 1986 (#86003087) | 2 Bristol Ln. 39°44′48″N 75°44′09″W﻿ / ﻿39.746672°N 75.735886°W﻿ / 39.746672; -75.735886﻿ (David Eastburn Farm) | Mill Creek Hundred | |
| 65 | J. Eastburn Barn | J. Eastburn Barn | November 13, 1986 (#86003088) | Pleasant Hill Rd. southwest of Corner Ketch Rd. 39°44′08″N 75°43′54″W﻿ / ﻿39.735535°N 75.731561°W﻿ / 39.735535; -75.731561﻿ (J. Eastburn Barn) | Mill Creek Hundred | Part of White Clay Creek State Park |
| 66 | Eastburn-Jeanes Lime Kilns Historic District | Eastburn-Jeanes Lime Kilns Historic District More images | April 28, 1977 (#77000389) | North of Newark on Limestone Rd. 39°44′30″N 75°43′00″W﻿ / ﻿39.741601°N 75.716673°W﻿ / 39.741601; -75.716673﻿ (Eastburn-Jeanes Lime Kilns Historic District) | Mill Creek Hundred | |
| 67 | Eastern Lock of the Chesapeake and Delaware Canal | Eastern Lock of the Chesapeake and Delaware Canal More images | April 21, 1975 (#75000543) | Battery Park 39°34′44″N 75°35′14″W﻿ / ﻿39.578795°N 75.587316°W﻿ / 39.578795; -75.587316﻿ (Eastern Lock of the Chesapeake and Delaware Canal) | Delaware City | |
| 68 | Eleutherian Mills | Eleutherian Mills More images | November 13, 1966 (#66000259) | North of Wilmington on Delaware Route 141 at Brandywine Creek Bridge 39°46′50″N 75°34′30″W﻿ / ﻿39.780556°N 75.575°W﻿ / 39.780556; -75.575﻿ (Eleutherian Mills) | Christiana Hundred | Includes most of the Hagley Museum and Library; some overlap with Breck's Mill Area |
| 69 | England House and Mill | England House and Mill More images | February 23, 1972 (#72001597) | 81 Red Mill Rd. 39°41′32″N 75°42′29″W﻿ / ﻿39.692222°N 75.708056°W﻿ / 39.692222; -75.708056﻿ (England House and Mill) | Mill Creek Hundred | |
| 70 | George Evans House | George Evans House | May 7, 1982 (#82002342) | 5 W. Main St. 39°40′58″N 75°45′14″W﻿ / ﻿39.682828°N 75.753951°W﻿ / 39.682828; -75.753951﻿ (George Evans House) | Newark | University of Delaware |
| 71 | John Evans House | John Evans House | February 24, 1983 (#83001392) | 14 W. Main St. 39°40′59″N 75°45′15″W﻿ / ﻿39.683166°N 75.754288°W﻿ / 39.683166; -75.754288﻿ (John Evans House) | Newark | Raub Hall of the University of Delaware |
| 72 | Exchange Building | Exchange Building | May 7, 1982 (#82002343) | 154–158 E. Main St. 39°41′01″N 75°44′49″W﻿ / ﻿39.6837°N 75.7469°W﻿ / 39.6837; -75.7469﻿ (Exchange Building) | Newark | Klondike Kate's |
| 73 | Fairview | Fairview | April 8, 1982 (#82002326) | 701 Cox Neck Rd. 39°33′49″N 75°36′50″W﻿ / ﻿39.563554°N 75.613824°W﻿ / 39.563554; -75.613824﻿ (Fairview) | Delaware City | Note that there are also Fairviews in Middletown and Odessa |
| 74 | Fell Historic District | Fell Historic District More images | June 16, 1983 (#83001335) | Faulkland Rd. and New Fell's Lane 39°44′56″N 75°38′16″W﻿ / ﻿39.748889°N 75.637778°W﻿ / 39.748889; -75.637778﻿ (Fell Historic District) | Mill Creek Hundred | |
| 75 | Robert Ferguson House | Robert Ferguson House More images | July 22, 1979 (#79000628) | 636 Chestnut Hill Rd. 39°40′24″N 75°42′24″W﻿ / ﻿39.673333°N 75.706667°W﻿ / 39.673333; -75.706667﻿ (Robert Ferguson House) | White Clay Creek Hundred | Demolished |
| 76 | Andrew Fisher House | Andrew Fisher House | May 8, 1973 (#73000525) | 725 Art Ln. 39°39′19″N 75°45′19″W﻿ / ﻿39.655172°N 75.755408°W﻿ / 39.655172; -75.755408﻿ (Andrew Fisher House) | Newark | |
| 77 | Fort Delaware on Pea Patch Island | Fort Delaware on Pea Patch Island More images | December 16, 1971 (#71000226) | Pea Patch Island in the Delaware River 39°35′24″N 75°34′19″W﻿ / ﻿39.59°N 75.571944°W﻿ / 39.59; -75.571944﻿ (Fort Delaware on Pea Patch Island) | Delaware City | |
| 78 | Fort DuPont Historic District | Fort DuPont Historic District More images | October 28, 1999 (#99001275) | 248 Kent Ave. 39°34′17″N 75°35′06″W﻿ / ﻿39.571392°N 75.585°W﻿ / 39.571392; -75.585﻿ (Fort DuPont Historic District) | Delaware City | Currently Fort DuPont State Park and the Governor Bacon Health Center |
| 79 | Galloway-Walker House | Galloway-Walker House | July 14, 1993 (#93000633) | 107 John St. 39°42′44″N 75°36′38″W﻿ / ﻿39.712316°N 75.610569°W﻿ / 39.712316; -75.610569﻿ (Galloway-Walker House) | Newport | |
| 80 | Garrett Snuff Mill | Garrett Snuff Mill More images | May 22, 1978 (#78000913) | Delaware Route 82 and Yorklyn Rd. 39°48′31″N 75°40′26″W﻿ / ﻿39.808611°N 75.673889°W﻿ / 39.808611; -75.673889﻿ (Garrett Snuff Mill) | Yorklyn | |
| 81 | Garrett Snuff Mills Historic District | Garrett Snuff Mills Historic District | January 24, 1980 (#80004486) | Delaware Route 82 and Yorklyn Rd. 39°48′38″N 75°40′21″W﻿ / ﻿39.810598°N 75.672435°W﻿ / 39.810598; -75.672435﻿ (Garrett Snuff Mills Historic District) | Yorklyn | |
| 82 | Glebe House | Glebe House More images | April 3, 1973 (#73000521) | 350 Glebe Ln. 39°40′07″N 75°33′31″W﻿ / ﻿39.668745°N 75.558687°W﻿ / 39.668745; -75.558687﻿ (Glebe House) | New Castle | |
| 83 | Glynrich | Glynrich More images | November 1, 1979 (#79000633) | Mill Rd. and Race St. 39°43′56″N 75°34′56″W﻿ / ﻿39.732087°N 75.582307°W﻿ / 39.732087; -75.582307﻿ (Glynrich) | Christiana Hundred | |
| 84 | Robert Graham House | Robert Graham House | August 1, 1997 (#97000835) | 751 Crossan Rd. 39°45′23″N 75°43′57″W﻿ / ﻿39.756317°N 75.732542°W﻿ / 39.756317; -75.732542﻿ (Robert Graham House) | Mill Creek Hundred | |
| 85 | Granite Mansion | Granite Mansion More images | February 24, 1983 (#83001394) | 292 W. Main St. 39°41′11″N 75°45′50″W﻿ / ﻿39.686336°N 75.763793°W﻿ / 39.686336; -75.763793﻿ (Granite Mansion) | Newark | Demolished, photo shows church on the site |
| 86 | Grantham-Edwards-McComb House | Grantham-Edwards-McComb House | January 19, 2016 (#15000977) | 217 Park Ave. 39°38′53″N 75°36′52″W﻿ / ﻿39.648041°N 75.614540°W﻿ / 39.648041; -75.614540﻿ (Grantham-Edwards-McComb House) | New Castle | |
| 87 | Graves Mill Historic District | Graves Mill Historic District More images | December 19, 1979 (#79000640) | East of Ashland on Way Rd. 39°48′17″N 75°38′40″W﻿ / ﻿39.804722°N 75.644444°W﻿ / 39.804722; -75.644444﻿ (Graves Mill Historic District) | Ashland | |
| 88 | Green Mansion | Green Mansion | February 24, 1983 (#83001395) | 94–96 E. Main St. 39°41′01″N 75°44′58″W﻿ / ﻿39.683611°N 75.749444°W﻿ / 39.683611; -75.749444﻿ (Green Mansion) | Newark | |
| 89 | Greenbank Historic Area | Greenbank Historic Area More images | July 2, 1973 (#73000513) | 500 Greenbank Mill Rd.; also 2300 Newport Gap Pike 39°44′24″N 75°37′59″W﻿ / ﻿39.74°N 75.633056°W﻿ / 39.74; -75.633056﻿ (Greenbank Historic Area) | Marshallton | "Marshallton" represents a boundary increase of July 24, 1979 |
| 90 | Hale-Byrnes House | Hale-Byrnes House More images | June 2, 1972 (#72000290) | 606 Stanton-Christiana Road 39°42′05″N 75°39′02″W﻿ / ﻿39.701334°N 75.650541°W﻿ / 39.701334; -75.650541﻿ (Hale-Byrnes House) | Stanton | |
| 91 | Head of Christiana United Presbyterian Church | Head of Christiana United Presbyterian Church | August 19, 1983 (#83001343) | 1100 Church Rd. 39°41′31″N 75°47′12″W﻿ / ﻿39.691944°N 75.786667°W﻿ / 39.691944; -75.786667﻿ (Head of Christiana United Presbyterian Church) | White Clay Creek Hundred | |
| 92 | The Hermitage | The Hermitage | March 1, 1973 (#73000522) | 901 Delaware St. 39°39′55″N 75°34′09″W﻿ / ﻿39.665232°N 75.569263°W﻿ / 39.665232; -75.569263﻿ (The Hermitage) | New Castle | Demolished in 2009 |
| 93 | Hersey-Duncan House | Hersey-Duncan House | November 15, 1990 (#90001714) | 2116 Duncan Rd. 39°44′06″N 75°38′27″W﻿ / ﻿39.734942°N 75.640706°W﻿ / 39.734942; -75.640706﻿ (Hersey-Duncan House) | Mill Creek Hundred | |
| 94 | William Hicklen House | William Hicklen House | October 6, 1983 (#83003519) | 502 Beaver Valley Rd. 39°49′55″N 75°33′22″W﻿ / ﻿39.832012°N 75.556040°W﻿ / 39.832012; -75.556040﻿ (William Hicklen House) | Talleyville | Owned by the Woodlawn Trustees. |
| 95 | Hickman Blacksmith Shop and House | Hickman Blacksmith Shop and House | September 2, 1994 (#94001078) | 1201 and 1203 Greenbank Rd. 39°43′44″N 75°38′18″W﻿ / ﻿39.728889°N 75.638333°W﻿ / 39.728889; -75.638333﻿ (Hickman Blacksmith Shop and House) | Marshallton | |
| 96 | Hickman Row | Hickman Row More images | June 16, 2006 (#06000284) | 1–117 Hickman Rd. 39°48′57″N 75°26′42″W﻿ / ﻿39.815833°N 75.445°W﻿ / 39.815833; -75.445﻿ (Hickman Row) | Claymont | |
| 97 | Hockessin Friends Meetinghouse | Hockessin Friends Meetinghouse More images | March 20, 1973 (#73000510) | 1501 Old Wilmington Rd. 39°47′34″N 75°41′28″W﻿ / ﻿39.792837°N 75.691009°W﻿ / 39.792837; -75.691009﻿ (Hockessin Friends Meetinghouse) | Hockessin | |
| 98 | Holladay-Harrington House | Holladay-Harrington House | September 30, 2004 (#04001077) | 3705 Kennett Pike 39°46′28″N 75°35′34″W﻿ / ﻿39.774444°N 75.592778°W﻿ / 39.774444; -75.592778﻿ (Holladay-Harrington House) | Greenville | Patterson Schwartz Realty |
| 99 | Holly Oak | Holly Oak | April 10, 2017 (#100000843) | 1503 Ridge Rd. 39°46′58″N 75°28′39″W﻿ / ﻿39.782818°N 75.477489°W﻿ / 39.782818; -75.477489﻿ (Holly Oak) | Claymont | |
| 100 | House at 901 Mt. Lebanon Rd. | House at 901 Mt. Lebanon Rd. | March 28, 2017 (#100000656) | 901 Mt. Lebanon Rd. 39°47′53″N 75°34′11″W﻿ / ﻿39.798076°N 75.569806°W﻿ / 39.798076; -75.569806﻿ (House at 901 Mt. Lebanon Rd.) | Rockland | |
| 101 | Iron Hill School No. 112C | Iron Hill School No. 112C More images | August 18, 1995 (#95001032) | 1335 Old Baltimore Pike 39°37′54″N 75°45′29″W﻿ / ﻿39.631532°N 75.758182°W﻿ / 39.631532; -75.758182﻿ (Iron Hill School No. 112C) | Pencader Hundred | Iron Hill Museum |
| 102 | Ivyside Farm | Ivyside Farm | January 4, 1982 (#82002324) | 1301 Naaman's Rd. 39°49′17″N 75°28′37″W﻿ / ﻿39.821253°N 75.476864°W﻿ / 39.821253; -75.476864﻿ (Ivyside Farm) | Claymont | |
| 103 | Johnson-Morris House | Johnson-Morris House | February 22, 2011 (#11000036) | 41 Upper Pike Creek Rd. 39°42′19″N 75°41′47″W﻿ / ﻿39.705278°N 75.696389°W﻿ / 39.705278; -75.696389﻿ (Johnson-Morris House) | Mill Creek Hundred | |
| 104 | William Julius "Judy" Johnson House | William Julius "Judy" Johnson House | October 10, 1995 (#95001145) | 3701 Kiamensi Ave. in Christiana Hundred 39°43′48″N 75°38′00″W﻿ / ﻿39.73°N 75.633333°W﻿ / 39.73; -75.633333﻿ (William Julius "Judy" Johnson House) | Marshallton | |
| 105 | Thomas Justis House | Thomas Justis House | September 23, 1993 (#93000989) | 1001 Milltown Rd. 39°44′03″N 75°39′31″W﻿ / ﻿39.734167°N 75.658611°W﻿ / 39.734167; -75.658611﻿ (Thomas Justis House) | Mill Creek Hundred | |
| 106 | Justis-Jones House | Justis-Jones House | August 28, 1998 (#98001096) | 2606 Newport Gap Pike 39°44′36″N 75°38′25″W﻿ / ﻿39.743333°N 75.640278°W﻿ / 39.743333; -75.640278﻿ (Justis-Jones House) | Mill Creek Hundred | |
| 107 | Andrew Kerr House | Andrew Kerr House | August 19, 1983 (#83001342) | 812 Elkton Rd. 39°40′16″N 75°46′13″W﻿ / ﻿39.671209°N 75.770194°W﻿ / 39.671209; -75.770194﻿ (Andrew Kerr House) | Newark | |
| 108 | Killgore Hall | Killgore Hall | July 14, 1993 (#93000630) | 101 N. James St. 39°42′53″N 75°36′36″W﻿ / ﻿39.714812°N 75.609967°W﻿ / 39.714812; -75.609967﻿ (Killgore Hall) | Newport | Demolished c. 2000 |
| 109 | Joseph Killgore House | Joseph Killgore House | July 14, 1993 (#93000627) | 107 N. James St. 39°42′54″N 75°36′36″W﻿ / ﻿39.714985°N 75.609996°W﻿ / 39.714985; -75.609996﻿ (Joseph Killgore House) | Newport | Demolished c. 2000 |
| 110 | La Grange | La Grange | July 10, 1974 (#74000601) | 2467 Pulaski Highway 39°36′22″N 75°44′54″W﻿ / ﻿39.60620°N 75.74842°W﻿ / 39.60620; -75.74842﻿ (La Grange) | Glasgow | |
| 111 | Laurel | Laurel | December 4, 1974 (#74000603) | 619 Shipley Rd. 39°46′25″N 75°31′00″W﻿ / ﻿39.77355°N 75.51678°W﻿ / 39.77355; -75.51678﻿ (Laurel) | Brandywine Hundred | |
| 112 | Lesley-Travers Mansion | Lesley-Travers Mansion More images | April 3, 1973 (#73000523) | 112 W. 6th St. 39°39′39″N 75°34′11″W﻿ / ﻿39.66074°N 75.56970°W﻿ / 39.66074; -75.56970﻿ (Lesley-Travers Mansion) | New Castle | |
| 113 | John Lewden House | John Lewden House | September 24, 1979 (#79003104) | 107 E. Main St. 39°39′48″N 75°39′20″W﻿ / ﻿39.66344°N 75.65565°W﻿ / 39.66344; -75.65565﻿ (John Lewden House) | Christiana | |
| 114 | Charles and Edith Liedlich House | Charles and Edith Liedlich House | April 19, 2006 (#06000283) | 180 Welsh Tract Rd. 39°38′39″N 75°45′41″W﻿ / ﻿39.64421°N 75.76148°W﻿ / 39.64421; -75.76148﻿ (Charles and Edith Liedlich House) | Newark | |
| 115 | Linden Hill | Linden Hill | April 8, 1982 (#82002356) | 34 N. DuPont Highway 39°33′48″N 75°39′20″W﻿ / ﻿39.563333°N 75.655556°W﻿ / 39.563333; -75.655556﻿ (Linden Hill) | St. Georges | |
| 116 | J. Lindsay Barn | J. Lindsay Barn More images | November 13, 1986 (#86003089) | 15 Middleton Dr. 39°45′04″N 75°41′16″W﻿ / ﻿39.751199°N 75.687882°W﻿ / 39.751199; -75.687882﻿ (J. Lindsay Barn) | Mill Creek Hundred | Offices of Covenant Wealth Strategies. |
| 117 | Samuel Lindsey House | Samuel Lindsey House | August 19, 1983 (#83001397) | 693 New London Rd. 39°42′27″N 75°46′36″W﻿ / ﻿39.707563°N 75.776615°W﻿ / 39.707563; -75.776615﻿ (Samuel Lindsey House) | McClellandville | |
| 118 | Lobdell Estate, Minquadale Home | Lobdell Estate, Minquadale Home More images | June 4, 1973 (#73000548) | N. DuPont Highway 39°42′23″N 75°34′13″W﻿ / ﻿39.706446°N 75.570289°W﻿ / 39.706446; -75.570289﻿ (Lobdell Estate, Minquadale Home) | New Castle Hundred | Demolished between 1984 and 2002. |
| 119 | Lombardy Hall | Lombardy Hall More images | December 5, 1972 (#72000292) | 1611 Concord Pike 39°46′53″N 75°32′40″W﻿ / ﻿39.78152°N 75.54452°W﻿ / 39.78152; -75.54452﻿ (Lombardy Hall) | Brandywine Hundred | |
| 120 | Louviers | Louviers | December 13, 1971 (#71000231) | 10 Black Gates Rd. 39°47′08″N 75°34′20″W﻿ / ﻿39.785556°N 75.572222°W﻿ / 39.785556; -75.572222﻿ (Louviers) | Brandywine Hundred | House demolished; gatehouses remain. |
| 121 | Lower Louviers and Chicken Alley | Lower Louviers and Chicken Alley | February 1, 1972 (#72000293) | 1 Black Gates Rd. 39°47′06″N 75°34′26″W﻿ / ﻿39.78513°N 75.57397°W﻿ / 39.78513; -75.57397﻿ (Lower Louviers and Chicken Alley) | Brandywine Hundred | |
| 122 | Lum's Mill House | Lum's Mill House | May 22, 1973 (#73000511) | Off Red Lion Road in Lums Pond State Park 39°33′03″N 75°42′47″W﻿ / ﻿39.55095°N 75.71310°W﻿ / 39.55095; -75.71310﻿ (Lum's Mill House) | Kirkwood | Part of Lums Pond State Park |
| 123 | Marcus Hook Range Rear Light | Marcus Hook Range Rear Light More images | March 27, 1989 (#89000287) | 313 Light House Rd. 39°45′44″N 75°30′13″W﻿ / ﻿39.762222°N 75.503611°W﻿ / 39.762222; -75.503611﻿ (Marcus Hook Range Rear Light) | Brandywine Hundred | |
| 124 | Marshallton United Methodist Church | Marshallton United Methodist Church More images | February 18, 1987 (#86002945) | 1105 Stanton Rd. 39°43′36″N 75°38′19″W﻿ / ﻿39.7266°N 75.6386°W﻿ / 39.7266; -75.6386﻿ (Marshallton United Methodist Church) | Marshallton | |
| 125 | J. Mason Farm | J. Mason Farm | November 13, 1986 (#86003091) | 2272 Creek Road 39°47′53″N 75°39′04″W﻿ / ﻿39.798023°N 75.651213°W﻿ / 39.798023; -75.651213﻿ (J. Mason Farm) | Ashland | Part of Ashland Farm (Henry B. du Pont IV estate) |
| 126 | J. McCormack Farm | J. McCormack Farm | November 13, 1986 (#86003093) | Newport Gap Turnpike north of Mill Creek Rd. 39°45′17″N 75°39′24″W﻿ / ﻿39.754722°N 75.656667°W﻿ / 39.754722; -75.656667﻿ (J. McCormack Farm) | Mill Creek Hundred | Demolished between 1992 and 2002. |
| 127 | McCoy House | McCoy House | April 24, 1973 (#73000512) | 4185 Kirkwood St. Georges Rd. 39°33′36″N 75°40′37″W﻿ / ﻿39.55996°N 75.67692°W﻿ / 39.55996; -75.67692﻿ (McCoy House) | Kirkwood | Part of an AdvoServ campus |
| 128 | J. McDaniel Farm | J. McDaniel Farm | November 13, 1986 (#86003094) | 112 Cardiff Court W 39°44′57″N 75°42′59″W﻿ / ﻿39.749047°N 75.716361°W﻿ / 39.749047; -75.716361﻿ (J. McDaniel Farm) | Mill Creek Hundred | |
| 129 | J. McIntyre Farm | J. McIntyre Farm | November 13, 1986 (#86003098) | 6464 Limestone Rd. 39°46′35″N 75°43′21″W﻿ / ﻿39.77625°N 75.72254°W﻿ / 39.77625; -75.72254﻿ (J. McIntyre Farm) | Mill Creek Hundred | Owned by the Robert N. Downs Memorial Conservancy |
| 130 | Meeteer House | Meeteer House | September 2, 1993 (#93000888) | 801 Kirkwood Highway 39°41′45″N 75°43′07″W﻿ / ﻿39.69570°N 75.71848°W﻿ / 39.69570; -75.71848﻿ (Meeteer House) | Mill Creek Hundred | |
| 131 | Memorial Hall | Memorial Hall | May 7, 1982 (#82002344) | University of Delaware campus 39°40′44″N 75°45′08″W﻿ / ﻿39.678889°N 75.752222°W﻿ / 39.678889; -75.752222﻿ (Memorial Hall) | Newark | University of Delaware |
| 132 | Merestone | Merestone | March 2, 1995 (#95000093) | 1610–1620 Yeatman's Mill Rd. 39°45′46″N 75°44′56″W﻿ / ﻿39.76276°N 75.74884°W﻿ / 39.76276; -75.74884﻿ (Merestone) | Mill Creek Hundred | Extends into Chester County, Pennsylvania |
| 133 | Mermaid Tavern | Mermaid Tavern More images | December 18, 1973 (#73000529) | 4900 Limestone Rd. 39°44′34″N 75°41′40″W﻿ / ﻿39.742801°N 75.694484°W﻿ / 39.742801; -75.694484﻿ (Mermaid Tavern) | Mill Creek Hundred | |
| 134 | Meteer Store House | Meteer Store House | February 24, 1983 (#83001398) | 325 Paper Mill Rd. 39°41′31″N 75°45′00″W﻿ / ﻿39.691955°N 75.750082°W﻿ / 39.691955; -75.750082﻿ (Meteer Store House) | Newark | |
| 135 | Mill Creek Friends Meetinghouse | Mill Creek Friends Meetinghouse More images | April 3, 1973 (#73000530) | 1140 Doe Run Rd. 39°45′52″N 75°44′30″W﻿ / ﻿39.7645°N 75.7417°W﻿ / 39.7645; -75.7417﻿ (Mill Creek Friends Meetinghouse) | Mill Creek Hundred | |
| 136 | Montchanin Historic District | Montchanin Historic District More images | June 9, 1978 (#78000900) | Delaware Route 100 39°47′21″N 75°35′18″W﻿ / ﻿39.789167°N 75.588333°W﻿ / 39.789167; -75.588333﻿ (Montchanin Historic District) | Montchanin | |
| 137 | Montgomery House | Montgomery House | July 28, 1988 (#88001160) | 2900 Old Limestone Rd. 39°43′53″N 75°40′15″W﻿ / ﻿39.73149°N 75.67075°W﻿ / 39.73149; -75.67075﻿ (Montgomery House) | Wilmington | |
| 138 | William Morgan Farm | William Morgan Farm More images | November 13, 1986 (#86003099) | 821–824 Doe Run Rd. 39°45′07″N 75°44′25″W﻿ / ﻿39.751944°N 75.740278°W﻿ / 39.751944; -75.740278﻿ (William Morgan Farm) | Mill Creek Hundred | |
| 139 | James Morrow House | James Morrow House | August 19, 1983 (#83001399) | 1130 (Formerly 1210) Ogletown Rd. 39°41′08″N 75°43′25″W﻿ / ﻿39.685556°N 75.723611°W﻿ / 39.685556; -75.723611﻿ (James Morrow House) | White Clay Creek Hundred | |
| 140 | Mount Cuba | Mount Cuba | April 2, 2003 (#03000172) | 3120 Barley Mill Rd. 39°47′18″N 75°38′54″W﻿ / ﻿39.78841°N 75.64828°W﻿ / 39.78841; -75.64828﻿ (Mount Cuba) | Mount Cuba | Headquarters of Mt. Cuba Center botanical garden |
| 141 | Mount Cuba Historic District | Mount Cuba Historic District More images | December 19, 1979 (#79000627) | Delaware Route 82 and Road 261 39°47′22″N 75°38′26″W﻿ / ﻿39.789444°N 75.640556°W﻿ / 39.789444; -75.640556﻿ (Mount Cuba Historic District) | Mount Cuba | |
| 142 | Mount Lebanon Methodist Episcopal Church | Mount Lebanon Methodist Episcopal Church | May 3, 1984 (#84000845) | 850 Mount Lebanon Rd. 39°47′55″N 75°34′04″W﻿ / ﻿39.79862°N 75.56785°W﻿ / 39.79862; -75.56785﻿ (Mount Lebanon Methodist Episcopal Church) | Wilmington | |
| 143 | Mount Pleasant Methodist Episcopal Church and Parsonage | Mount Pleasant Methodist Episcopal Church and Parsonage | August 28, 1998 (#98001097) | 1009 Philadelphia Pike 39°46′37″N 75°29′27″W﻿ / ﻿39.77708°N 75.49072°W﻿ / 39.77708; -75.49072﻿ (Mount Pleasant Methodist Episcopal Church and Parsonage) | Wilmington | Part of Bellevue State Park |
| 144 | Mt. Airy School No. 27 | Mt. Airy School No. 27 | April 13, 1983 (#83001400) | 2 Selborne Dr. 39°49′37″N 75°37′10″W﻿ / ﻿39.82686°N 75.61936°W﻿ / 39.82686; -75.61936﻿ (Mt. Airy School No. 27) | Centreville | |
| 145 | Naaman's Creek School | Naaman's Creek School | November 15, 1990 (#90001715) | 3611 Philadelphia Pike 39°48′17″N 75°27′17″W﻿ / ﻿39.804772°N 75.454689°W﻿ / 39.804772; -75.454689﻿ (Naaman's Creek School) | Claymont | |
| 146 | New Castle and Frenchtown Railroad Right-of-Way | New Castle and Frenchtown Railroad Right-of-Way | September 1, 1976 (#76002290) | Off U.S. Route 40 between Frenchtown, Maryland and Porter 39°35′37″N 75°45′54″W﻿ / ﻿39.593611°N 75.765°W﻿ / 39.593611; -75.765﻿ (New Castle and Frenchtown Railroad Right-of-Way) | Porter | Extends into Cecil County, Maryland |
| 147 | New Castle County Court House | New Castle County Court House More images | November 28, 1972 (#72000285) | 211 Delaware St. 39°39′35″N 75°33′49″W﻿ / ﻿39.659722°N 75.563611°W﻿ / 39.659722; -75.563611﻿ (New Castle County Court House) | New Castle | Part of the First State National Historical Park |
| 148 | New Castle Historic District | New Castle Historic District More images | December 24, 1967 (#67000003) | Bounded by Harmony St., The Strand, 3rd St., and Delaware St.; also roughly bounded by the Delaware River, Broad Dike, and 4th, 6th, 7th, and Penn Sts. 39°39′39″N 75°33′50″W﻿ / ﻿39.660833°N 75.563889°W﻿ / 39.660833; -75.563889﻿ (New Castle Historic District) | New Castle | Second set of boundaries represents a boundary increase of November 8, 1984 |
| 149 | New Castle Ice Piers | New Castle Ice Piers | February 4, 1982 (#82002333) | Delaware River 39°39′28″N 75°33′39″W﻿ / ﻿39.657778°N 75.560833°W﻿ / 39.657778; -75.560833﻿ (New Castle Ice Piers) | New Castle | |
| 150 | Newark Opera House | Newark Opera House | May 7, 1982 (#82002345) | 95 E. Main St. 39°40′59″N 75°44′59″W﻿ / ﻿39.683056°N 75.749722°W﻿ / 39.683056; -75.749722﻿ (Newark Opera House) | Newark | |
| 151 | Newark Passenger Station | Newark Passenger Station More images | May 7, 1982 (#82002346) | 429 S. College Ave. 39°40′13″N 75°45′11″W﻿ / ﻿39.670278°N 75.753056°W﻿ / 39.670278; -75.753056﻿ (Newark Passenger Station) | Newark | Newark History Museum |
| 152 | Newark Union Church and Cemetery | Newark Union Church and Cemetery More images | February 6, 2020 (#100004955) | 8 and 20 Newark Union Public Rd. 39°47′10″N 75°30′48″W﻿ / ﻿39.7860°N 75.5134°W﻿ / 39.7860; -75.5134﻿ (Newark Union Church and Cemetery) | Brandywine Hundred | |
| 153 | Newport National Bank | Newport National Bank | July 14, 1993 (#93000634) | 100 E. Market St. 39°42′49″N 75°36′29″W﻿ / ﻿39.713611°N 75.608056°W﻿ / 39.713611; -75.608056﻿ (Newport National Bank) | Newport | |
| 154 | Newport Railroad Station | Newport Railroad Station | January 21, 1994 (#93001515) | 112 S. James St. 39°42′44″N 75°36′32″W﻿ / ﻿39.71211°N 75.60899°W﻿ / 39.71211; -75.60899﻿ (Newport Railroad Station) | Newport | Demolished between 1995 and 2002. |
| 155 | North Saint Georges Historic District | North Saint Georges Historic District More images | August 22, 1995 (#95001033) | Roughly along Main, Broad, Delaware, and Church Sts. in Red Lion Hundred 39°33′24″N 75°39′07″W﻿ / ﻿39.556667°N 75.651944°W﻿ / 39.556667; -75.651944﻿ (North Saint Georges Historic District) | St. Georges | |
| 156 | Old Cann Mansion House | Old Cann Mansion House | April 8, 1982 (#82002329) | 2290 Red Lion Road 39°34′26″N 75°41′33″W﻿ / ﻿39.57382°N 75.69253°W﻿ / 39.57382; -75.69253﻿ (Old Cann Mansion House) | Kirkwood | |
| 157 | Old College Historic District | Old College Historic District More images | June 4, 1973 (#73000526) | Main and College Sts. on the University of Delaware campus 39°41′03″N 75°45′10″W﻿ / ﻿39.684167°N 75.752778°W﻿ / 39.684167; -75.752778﻿ (Old College Historic District) | Newark | University of Delaware |
| 158 | Old First Presbyterian Church | Old First Presbyterian Church More images | May 7, 1982 (#82002347) | 17 W. Main St. 39°40′58″N 75°45′17″W﻿ / ﻿39.682751°N 75.754594°W﻿ / 39.682751; -75.754594﻿ (Old First Presbyterian Church) | Newark | University of Delaware |
| 159 | Old Fort Church | Old Fort Church | August 19, 1983 (#83001402) | 37 N. Old Baltimore Pike 39°40′04″N 75°39′33″W﻿ / ﻿39.66786°N 75.65929°W﻿ / 39.66786; -75.65929﻿ (Old Fort Church) | Christiana | |
| 160 | Old Newark Comprehensive School | Old Newark Comprehensive School | May 7, 1982 (#82002348) | 83 E. Main St. 39°41′00″N 75°44′58″W﻿ / ﻿39.683333°N 75.749444°W﻿ / 39.683333; -75.749444﻿ (Old Newark Comprehensive School) | Newark | University of Delaware |
| 161 | Old Post Office | Old Post Office | April 8, 1982 (#82002330) | 3616 Kirkwood St. Georges Rd. 39°34′16″N 75°41′47″W﻿ / ﻿39.57100°N 75.69644°W﻿ / 39.57100; -75.69644﻿ (Old Post Office) | Kirkwood | |
| 162 | Ott's Chapel | Ott's Chapel More images | August 13, 1986 (#86001555) | 1655 Otts Chapel Road 39°38′03″N 75°46′43″W﻿ / ﻿39.63411°N 75.77857°W﻿ / 39.63411; -75.77857﻿ (Ott's Chapel) | Pencader Hundred | |
| 163 | Owl's Nest Country Place | Owl's Nest Country Place | August 30, 2010 (#10000597) | 201 Owl's Nest Rd 39°48′55″N 75°37′25″W﻿ / ﻿39.81539°N 75.62353°W﻿ / 39.81539; -75.62353﻿ (Owl's Nest Country Place) | Centreville | |
| 164 | Parker's Dairy Palace | Parker's Dairy Palace | October 15, 2019 (#100004513) | 2 Jay Dr. 39°41′11″N 75°35′40″W﻿ / ﻿39.6864°N 75.5944°W﻿ / 39.6864; -75.5944﻿ (Parker's Dairy Palace) | New Castle | |
| 165 | Penn Farm of the Trustees of the New Castle Common | Penn Farm of the Trustees of the New Castle Common | September 11, 1997 (#97001120) | 807 Frenchtown Road 39°40′01″N 75°35′33″W﻿ / ﻿39.666944°N 75.5925°W﻿ / 39.666944; -75.5925﻿ (Penn Farm of the Trustees of the New Castle Common) | New Castle | |
| 166 | Thomas Phillips Mill Complex | Thomas Phillips Mill Complex | August 19, 1983 (#83001403) | 708 and 712 Nottingham Rd. 39°41′29″N 75°46′40″W﻿ / ﻿39.691389°N 75.777778°W﻿ / 39.691389; -75.777778﻿ (Thomas Phillips Mill Complex) | Newark | |
| 167 | T. Pierson Farm | T. Pierson Farm | November 13, 1986 (#86003101) | 669 Southwood Rd. 39°47′16″N 75°42′56″W﻿ / ﻿39.787814°N 75.715642°W﻿ / 39.787814; -75.715642﻿ (T. Pierson Farm) | Hockessin | |
| 168 | Point Farm | Point Farm | April 8, 1982 (#82002331) | 2950 Red Lion Road 39°33′18″N 75°42′09″W﻿ / ﻿39.55504°N 75.70240°W﻿ / 39.55504; -75.70240﻿ (Point Farm) | Kirkwood | |
| 169 | Poplar Hall | Poplar Hall | January 26, 1988 (#87002434) | 3176 Denny Rd. 39°33′22″N 75°46′28″W﻿ / ﻿39.556066°N 75.774453°W﻿ / 39.556066; -75.774453﻿ (Poplar Hall) | Newark | |
| 170 | Public School No. 111-C | Public School No. 111-C | October 18, 1979 (#79000625) | 50 N. Old Baltimore Pike 39°40′07″N 75°39′31″W﻿ / ﻿39.66854°N 75.65860°W﻿ / 39.66854; -75.65860﻿ (Public School No. 111-C) | Christiana | |
| 171 | Public School No. 29 | Public School No. 29 | May 22, 1978 (#78000894) | 1041 Valley Rd. 39°47′21″N 75°42′02″W﻿ / ﻿39.78917°N 75.70052°W﻿ / 39.78917; -75.70052﻿ (Public School No. 29) | Hockessin | |
| 172 | Joshua Pyle House and Wagon Barn | Joshua Pyle House and Wagon Barn | September 13, 1993 (#93000887) | 2603 Foulk Rd. 39°49′45″N 75°30′01″W﻿ / ﻿39.82919°N 75.50014°W﻿ / 39.82919; -75.50014﻿ (Joshua Pyle House and Wagon Barn) | Brandywine Hundred | |
| 173 | George Read II House | George Read II House | December 23, 2016 (#100000872) | 42 The Strand 39°39′35″N 75°33′41″W﻿ / ﻿39.659607°N 75.561468°W﻿ / 39.659607; -75.561468﻿ (George Read II House) | New Castle | |
| 174 | Red Clay Creek Presbyterian Church | Red Clay Creek Presbyterian Church | April 11, 1973 (#73000532) | 500 McKennans Church Rd. 39°45′09″N 75°39′33″W﻿ / ﻿39.752425°N 75.659261°W﻿ / 39.752425; -75.659261﻿ (Red Clay Creek Presbyterian Church) | Newport | |
| 175 | Rhodes Pharmacy | Rhodes Pharmacy | February 24, 1983 (#83001404) | 36 E. Main St. 39°41′00″N 75°45′07″W﻿ / ﻿39.683302°N 75.752056°W﻿ / 39.683302; -75.752056﻿ (Rhodes Pharmacy) | Newark | |
| 176 | Robinson House | Robinson House More images | June 21, 1971 (#71000225) | 1 Naamans Road 39°48′37″N 75°26′31″W﻿ / ﻿39.81031°N 75.44187°W﻿ / 39.81031; -75.44187﻿ (Robinson House) | Claymont | State of Delaware |
| 177 | Rockland Historic District | Rockland Historic District More images | February 1, 1972 (#72000289) | Town of Rockland and its environs along Rockland Rd. and Brandywine Creek 39°47′48″N 75°34′28″W﻿ / ﻿39.796667°N 75.574444°W﻿ / 39.796667; -75.574444﻿ (Rockland Historic District) | Rockland | |
| 178 | Rockwood | Rockwood More images | July 12, 1976 (#76000579) | 610 Shipley Rd. 39°46′21″N 75°31′15″W﻿ / ﻿39.77250°N 75.52082°W﻿ / 39.77250; -75.52082﻿ (Rockwood) | Wilmington | New Castle County park; boundary decrease approved April 19, 2023 |
| 179 | Rosemont | Rosemont | February 27, 2009 (#09000051) | 15½ Cragmere Rd. 39°46′12″N 75°29′30″W﻿ / ﻿39.77004°N 75.49163°W﻿ / 39.77004; -75.49163﻿ (Rosemont) | Wilmington | |
| 180 | Rotheram Mill House | Rotheram Mill House | January 4, 1972 (#72000287) | 318 Harmony Rd. 39°41′49″N 75°41′40″W﻿ / ﻿39.696867°N 75.694502°W﻿ / 39.696867; -75.694502﻿ (Rotheram Mill House) | Newark | |
| 181 | St. Georges Cemetery Caretaker's House | St. Georges Cemetery Caretaker's House | April 8, 1982 (#82002357) | 4320 Kirkwood St. Georges Rd. 39°33′37″N 75°40′10″W﻿ / ﻿39.56026°N 75.66957°W﻿ / 39.56026; -75.66957﻿ (St. Georges Cemetery Caretaker's House) | St. Georges | |
| 182 | St. Georges Presbyterian Church | St. Georges Presbyterian Church | November 7, 1984 (#84000263) | 120–200 N. Main St. 39°33′21″N 75°39′07″W﻿ / ﻿39.55580°N 75.65185°W﻿ / 39.55580; -75.65185﻿ (St. Georges Presbyterian Church) | St. Georges | St. Georges Historical Society |
| 183 | St. James Episcopal Church, Mill Creek | St. James Episcopal Church, Mill Creek More images | May 8, 1973 (#73000543) | 2106 St. James Church Rd. 39°43′07″N 75°39′38″W﻿ / ﻿39.71860°N 75.66064°W﻿ / 39.71860; -75.66064﻿ (St. James Episcopal Church, Mill Creek) | Stanton | |
| 184 | St. John the Baptist Roman Catholic Church | St. John the Baptist Roman Catholic Church More images | May 7, 1982 (#82002349) | 200 E. Main St. 39°41′02″N 75°44′43″W﻿ / ﻿39.683896°N 75.745276°W﻿ / 39.683896; -75.745276﻿ (St. John the Baptist Roman Catholic Church) | Newark | |
| 185 | St. Joseph's on the Brandywine | St. Joseph's on the Brandywine More images | November 7, 1976 (#76000572) | 10 Barley Mill Rd. 39°46′20″N 75°35′19″W﻿ / ﻿39.77211°N 75.58849°W﻿ / 39.77211; -75.58849﻿ (St. Joseph's on the Brandywine) | Greenville | |
| 186 | St. Thomas Episcopal Church | St. Thomas Episcopal Church | May 7, 1982 (#82002350) | 21 S. Main St. 39°40′56″N 75°45′24″W﻿ / ﻿39.682097°N 75.756585°W﻿ / 39.682097; -75.756585﻿ (St. Thomas Episcopal Church) | Newark | University of Delaware |
| 187 | Charles Springer Tavern | Charles Springer Tavern | September 11, 1992 (#92001142) | 7 Stone Barn Ln. 39°45′42″N 75°37′13″W﻿ / ﻿39.76172°N 75.62025°W﻿ / 39.76172; -75.62025﻿ (Charles Springer Tavern) | Christiana Hundred | |
| 188 | Springer Farm | Springer Farm More images | November 13, 1986 (#86003103) | 6621 Limestone Rd. 39°47′09″N 75°43′28″W﻿ / ﻿39.785733°N 75.724313°W﻿ / 39.785733; -75.724313﻿ (Springer Farm) | Hockessin | |
| 189 | Springer-Cranston House | Springer-Cranston House | September 30, 1994 (#94001177) | 1015 Stanton Rd. in Mill Creek Hundred 39°43′33″N 75°38′18″W﻿ / ﻿39.72592°N 75.63836°W﻿ / 39.72592; -75.63836﻿ (Springer-Cranston House) | Marshallton | |
| 190 | Starl House | Starl House | April 8, 1982 (#82002358) | U.S. Route 13 39°34′44″N 75°39′30″W﻿ / ﻿39.578889°N 75.658333°W﻿ / 39.578889; -75.658333﻿ (Starl House) | St. Georges | Demolished between 1982 and 1992. |
| 191 | State Theater | State Theater | February 24, 1983 (#83001405) | 39 E. Main St. 39°40′59″N 75°45′07″W﻿ / ﻿39.683014°N 75.751905°W﻿ / 39.683014; -75.751905﻿ (State Theater) | Newark | The State Theater was demolished in 1989. |
| 192 | James Steel House | James Steel House | August 19, 1983 (#83001341) | 1016 W. Church St. 39°41′28″N 75°47′09″W﻿ / ﻿39.691217°N 75.785858°W﻿ / 39.691217; -75.785858﻿ (James Steel House) | White Clay Creek Hundred | |
| 193 | James Stewart House | James Stewart House | June 11, 1986 (#86001314) | 2611 Del Laws Rd. 39°36′02″N 75°42′56″W﻿ / ﻿39.600556°N 75.715556°W﻿ / 39.600556; -75.715556﻿ (James Stewart House) | Glasgow | |
| 194 | James Stewart Jr. House | James Stewart Jr. House | August 19, 1983 (#83001340) | 563 Walther Rd. 39°38′26″N 75°41′00″W﻿ / ﻿39.64063°N 75.68333°W﻿ / 39.64063; -75.68333﻿ (James Stewart Jr. House) | Christiana | |
| 195 | J. Stinson Farm | J. Stinson Farm | November 13, 1986 (#86003080) | 750 Corner Ketch Rd. 39°44′39″N 75°43′52″W﻿ / ﻿39.744167°N 75.731111°W﻿ / 39.744167; -75.731111﻿ (J. Stinson Farm) | Newark | |
| 196 | Stockton-Montmorency | Stockton-Montmorency | April 3, 2012 (#12000165) | 1700 Walnut Green Rd. 39°47′30″N 75°37′50″W﻿ / ﻿39.79175°N 75.63043°W﻿ / 39.79175; -75.63043﻿ (Stockton-Montmorency) | Greenville | |
| 197 | Stonum | Stonum More images | November 7, 1973 (#73000524) | 900 Washington Ave. 39°39′37″N 75°34′35″W﻿ / ﻿39.66037°N 75.57651°W﻿ / 39.66037; -75.57651﻿ (Stonum) | New Castle | |
| 198 | Strand Millas and Rock Spring | Strand Millas and Rock Spring | July 16, 1973 (#73000520) | 204 & 411 Rockland Rd. 39°47′32″N 75°35′02″W﻿ / ﻿39.792222°N 75.583889°W﻿ / 39.792222; -75.583889﻿ (Strand Millas and Rock Spring) | Montchanin | |
| 199 | Sutton House | Sutton House | April 24, 1973 (#73000542) | 10 Delaware St. 39°33′21″N 75°39′00″W﻿ / ﻿39.55578°N 75.64991°W﻿ / 39.55578; -75.64991﻿ (Sutton House) | St. Georges | |
| 200 | Swanwyck | Swanwyck More images | March 17, 1977 (#77000387) | 65 Landers Lane 39°41′31″N 75°33′50″W﻿ / ﻿39.69193°N 75.56396°W﻿ / 39.69193; -75.56396﻿ (Swanwyck) | New Castle | |
| 201 | William Talley House | William Talley House | February 21, 1985 (#85000310) | 1813 Foulk Rd. 39°48′35″N 75°30′55″W﻿ / ﻿39.80979°N 75.51531°W﻿ / 39.80979; -75.51531﻿ (William Talley House) | Wilmington | |
| 202 | Joseph Tatnall House | Joseph Tatnall House | July 14, 1993 (#93000631) | 205 S. James St. 39°42′39″N 75°36′34″W﻿ / ﻿39.710894°N 75.609511°W﻿ / 39.710894; -75.609511﻿ (Joseph Tatnall House) | Newport | Now part of a BASF complex |
| 203 | John C. Vansant House | John C. Vansant House | February 16, 1989 (#89000007) | 110 Possum Hollow Rd. 39°42′50″N 75°43′37″W﻿ / ﻿39.713889°N 75.726944°W﻿ / 39.713889; -75.726944﻿ (John C. Vansant House) | Newark | Tri-State Bird Rescue |
| 204 | Vernacular Frame House | Vernacular Frame House | April 8, 1982 (#82002359) | 105 Clarks Corner Rd. 39°33′24″N 75°38′53″W﻿ / ﻿39.55673°N 75.64815°W﻿ / 39.55673; -75.64815﻿ (Vernacular Frame House) | St. Georges | |
| 205 | Village of Arden | Village of Arden More images | February 6, 1973 (#73000550) | 6 miles north of Wilmington between Marsh Rd., Naaman's Creek, and Ardentown 39°48′40″N 75°29′14″W﻿ / ﻿39.811111°N 75.487222°W﻿ / 39.811111; -75.487222﻿ (Village of Arden) | Arden | |
| 206 | R. Walker Barn | R. Walker Barn | November 13, 1986 (#86003082) | Rustic Ln. 39°44′16″N 75°41′47″W﻿ / ﻿39.737778°N 75.696389°W﻿ / 39.737778; -75.696389﻿ (R. Walker Barn) | Newark | |
| 207 | Walker's Mill and Walker's Bank | Walker's Mill and Walker's Bank More images | February 1, 1972 (#72000296) | Walkers Mill Rd. 39°46′14″N 75°34′43″W﻿ / ﻿39.77068°N 75.57849°W﻿ / 39.77068; -75.57849﻿ (Walker's Mill and Walker's Bank) | Wilmington | |
| 208 | Walnut Green School | Walnut Green School | August 19, 1994 (#94001014) | Junction of Delaware Route 82 and Owl's Nest Rd. 39°47′37″N 75°37′31″W﻿ / ﻿39.79359°N 75.62533°W﻿ / 39.79359; -75.62533﻿ (Walnut Green School) | Greenville | |
| 209 | Walnut Lane | Walnut Lane | July 22, 1979 (#79000629) | East of Newark at 4133 Stanton-Ogletown Rd. 39°41′02″N 75°41′03″W﻿ / ﻿39.683889°N 75.684167°W﻿ / 39.683889; -75.684167﻿ (Walnut Lane) | White Clay Creek Hundred | Demolished between 1979 and 1992. |
| 210 | Lewis Weldin House | Lewis Weldin House | July 14, 1993 (#93000632) | 7-9 W. Market St. 39°42′50″N 75°36′36″W﻿ / ﻿39.713887°N 75.610118°W﻿ / 39.713887; -75.610118﻿ (Lewis Weldin House) | Newport | Demolished between 2007 and 2009 |
| 211 | Welsh Tract Baptist Church | Welsh Tract Baptist Church More images | March 1, 1973 (#73000527) | Welsh Tract Rd. 39°39′01″N 75°45′07″W﻿ / ﻿39.650278°N 75.751944°W﻿ / 39.650278; -75.751944﻿ (Welsh Tract Baptist Church) | Pencader Hundred | |
| 212 | Wesley M.E. Church | Wesley M.E. Church More images | August 19, 1983 (#83001407) | 839 New London Rd. 39°42′42″N 75°46′44″W﻿ / ﻿39.71161°N 75.778896°W﻿ / 39.71161; -75.778896﻿ (Wesley M.E. Church) | McClellandville | |
| 213 | White Clay Creek Presbyterian Church | White Clay Creek Presbyterian Church More images | March 20, 1973 (#73000531) | 1311 Capitol Trail 39°41′56″N 75°42′36″W﻿ / ﻿39.698841°N 75.709964°W﻿ / 39.698841; -75.709964﻿ (White Clay Creek Presbyterian Church) | Newark | |
| 214 | White Hall | White Hall | July 12, 1990 (#90001072) | 130 Michael Ln. 39°34′24″N 75°43′17″W﻿ / ﻿39.57343°N 75.72125°W﻿ / 39.57343; -75.72125﻿ (White Hall) | Bear | |
| 215 | Wilmington and Western Railroad | Wilmington and Western Railroad More images | September 8, 1980 (#80000932) | 2201 Newport Gap Pike 39°44′19″N 75°37′58″W﻿ / ﻿39.738528°N 75.632778°W﻿ / 39.738528; -75.632778﻿ (Wilmington and Western Railroad) | Greenbank | |
| 216 | Wilmington Trust Company Bank | Wilmington Trust Company Bank | May 7, 1982 (#82002351) | 82 E. Main St. 39°41′01″N 75°45′00″W﻿ / ﻿39.683479°N 75.750114°W﻿ / 39.683479; -75.750114﻿ (Wilmington Trust Company Bank) | Newark | |
| 217 | Edward R. Wilson House | Edward R. Wilson House | April 25, 1983 (#83001408) | 521 S. College Ave 39°40′08″N 75°45′04″W﻿ / ﻿39.66900°N 75.75099°W﻿ / 39.66900; -75.75099﻿ (Edward R. Wilson House) | Newark | |
| 218 | Henry Francis du Pont Winterthur Museum and Gardens | Henry Francis du Pont Winterthur Museum and Gardens More images | February 24, 1971 (#71000233) | 6 miles northwest of Wilmington on Delaware Route 52 39°48′31″N 75°36′01″W﻿ / ﻿39.808611°N 75.600278°W﻿ / 39.808611; -75.600278﻿ (Henry Francis du Pont Winterthur Museum and Gardens) | Winterthur | |
| 219 | Woman's Club of Newport | Woman's Club of Newport | July 14, 1993 (#93000629) | 15 N. Augustine St. 39°42′53″N 75°36′22″W﻿ / ﻿39.714821°N 75.606056°W﻿ / 39.714821; -75.606056﻿ (Woman's Club of Newport) | Newport | |
| 220 | Wooddale Bridge | Wooddale Bridge More images | April 11, 1973 (#73000552) | Foxhill Ln. over Red Clay Creek 39°45′57″N 75°38′13″W﻿ / ﻿39.76593°N 75.63681°W﻿ / 39.76593; -75.63681﻿ (Wooddale Bridge) | Wooddale | |
| 221 | Wooddale Historic District | Wooddale Historic District More images | August 24, 1979 (#79000630) | Northwest of Newport on Wooddale Rd 39°46′01″N 75°38′18″W﻿ / ﻿39.76699°N 75.63821°W﻿ / 39.76699; -75.63821﻿ (Wooddale Historic District) | Wooddale | |
| 222 | Woodstock | Woodstock More images | September 7, 1973 (#73000551) | 102 Middleboro Rd. 39°43′19″N 75°35′24″W﻿ / ﻿39.72182°N 75.58997°W﻿ / 39.72182; -75.58997﻿ (Woodstock) | Wilmington | New Castle County park |
| 223 | Wright House | Wright House | May 7, 1982 (#82002352) | 47 Kent Way 39°40′44″N 75°45′21″W﻿ / ﻿39.678910°N 75.755935°W﻿ / 39.678910; -75.755935﻿ (Wright House) | Newark | University of Delaware president's house |
| 224 | William Young House | William Young House | October 29, 1982 (#82001029) | 507 Black Gates Road 39°47′40″N 75°33′54″W﻿ / ﻿39.794444°N 75.565°W﻿ / 39.794444; -75.565﻿ (William Young House) | Rockland | |