# National Register of Historic Places listings in New London County, Connecticut

This is a list of the National Register of Historic Places listings in New London County, Connecticut.
This is intended to be a complete list of the properties and districts on the National Register of Historic Places in New London County, Connecticut, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in an online map.
There are 204 properties and districts listed on the National Register in the county, including 13 National Historic Landmarks. One property was once listed, but has since been delisted.
Contents: Counties and municipalities in Connecticut :
* Fairfield (city of Bridgeport) (town of Greenwich) (city of Stamford) |
* Hartford (city of Hartford) (town of Southington) (town of West Hartford) (town of Windsor) |
* Litchfield |
* Middlesex (city of Middletown) |
* New Haven (city of New Haven) |
* New London |
* Tolland |
* Windham
This National Park Service list is complete through NPS recent listings posted February 28, 2025.
Download coordinates as:
* KML
* GPX (all coordinates)
* GPX (primary coordinates)
* GPX (secondary coordinates)

## Current listings

| | Name on the Register | Image | Date listed | Location | City or town | Description |
| 1 | Alden Tavern Site | Alden Tavern Site | April 13, 1998 (#98000361) | Town parking lot adjacent to Lebanon Historical Society 41°38′14″N 72°12′47″W﻿ / ﻿41.6373°N 72.213°W﻿ / 41.6373; -72.213﻿ (Alden Tavern Site) | Lebanon | Site of tavern, tied to the whipping of British General Richard Prescott. |
| 2 | American Thermos Bottle Company Laurel Hill Plant | American Thermos Bottle Company Laurel Hill Plant | July 17, 1989 (#88003091) | 11 Thermos Ave. 41°30′37″N 72°04′43″W﻿ / ﻿41.5103°N 72.0786°W﻿ / 41.5103; -72.0786﻿ (American Thermos Bottle Company Laurel Hill Plant) | Norwich | The American Thermos Bottle Company plant is significant for the adaptive use of a mill design to modern industry. Now renovated, the property has been modernized for a school. |
| 3 | Winslow Ames House | Winslow Ames House | March 23, 1995 (#95000283) | 132 Mohegan Ave. 41°22′34″N 72°06′09″W﻿ / ﻿41.3761°N 72.1025°W﻿ / 41.3761; -72.1025﻿ (Winslow Ames House) | New London | A 1933 prefabricated Motohome designed by Robert W. McLaughlin, Jr. |
| 4 | Anshei Israel Synagogue | Anshei Israel Synagogue | July 21, 1995 (#95000861) | 142 Newent Rd. (CT 138) 41°36′09″N 71°59′38″W﻿ / ﻿41.6025°N 71.9939°W﻿ / 41.6025; -71.9939﻿ (Anshei Israel Synagogue) | Lisbon | A small one-room Orthodox congregational synagogue constructed in 1936. |
| 5 | Applewood Farm | Applewood Farm | October 15, 1987 (#87001765) | 528 Colonel Ledyard Highway 41°25′27″N 71°59′41″W﻿ / ﻿41.4242°N 71.9947°W﻿ / 41.4242; -71.9947﻿ (Applewood Farm) | Ledyard | A farmhouse with Colonial center-chimney design and with Federal style details. |
| 6 | Ashlawn | Ashlawn More images | June 4, 1979 (#79002649) | 1 Potash Hill Rd. 41°37′48″N 72°02′27″W﻿ / ﻿41.63°N 72.0408°W﻿ / 41.63; -72.0408﻿ (Ashlawn) | Sprague | A two-story, central-hall frame farmhouse dating from the 18th-century |
| 7 | Avery Homestead | Avery Homestead | December 14, 1992 (#92001641) | 20 Avery Hill Rd. 41°27′04″N 72°02′46″W﻿ / ﻿41.4511°N 72.0461°W﻿ / 41.4511; -72.0461﻿ (Avery Homestead) | Ledyard | Built circa 1696, this home is historically significant for its design and the fact that more than twelve generations of the Avery family have resided in the house. |
| 8 | Avery House | Avery House | September 4, 1986 (#86001726) | Northeastern corner of Park and Roode Rds. 41°36′28″N 71°54′50″W﻿ / ﻿41.6078°N 71.9139°W﻿ / 41.6078; -71.9139﻿ (Avery House) | Griswold | Believed to have been constructed around 1770, this structure was once in the thriving mill town of Hopeville. Now it serves as the park manager's residence for Hopeville Pond State Park. |
| 9 | Avery Point Lighthouse | Avery Point Lighthouse More images | August 23, 2002 (#02000866) | On Long Island Sound at 1084 Shennecossett Rd. 41°19′01″N 72°03′49″W﻿ / ﻿41.3169°N 72.0636°W﻿ / 41.3169; -72.0636﻿ (Avery Point Lighthouse) | Groton | A lighthouse dating from 1943, officially listed as the last lighthouse built in Connecticut. |
| 10 | Thomas Avery House | Thomas Avery House | August 22, 1979 (#79002637) | Society Rd. 41°20′59″N 72°13′00″W﻿ / ﻿41.3497°N 72.2167°W﻿ / 41.3497; -72.2167﻿ (Thomas Avery House) | East Lyme | A two-and-a-half story clapboarded Greek Revival farmhouse dating to 1845-1846. Also known as the Smith-Harris House. |
| 11 | Nathaniel Backus House | Nathaniel Backus House | October 6, 1970 (#70000715) | 44 Rockwell St. 41°32′04″N 72°04′42″W﻿ / ﻿41.5344°N 72.0783°W﻿ / 41.5344; -72.0783﻿ (Nathaniel Backus House) | Norwich | A circa 1750 two-story clapboarded Colonial renovated to a Greek Revival home. Moved to its current location in 1952. |
| 12 | Bacon Academy | Bacon Academy More images | April 27, 1982 (#82004364) | 84 Main Street 41°34′24″N 72°19′59″W﻿ / ﻿41.5733°N 72.3331°W﻿ / 41.5733; -72.3331﻿ (Bacon Academy) | Colchester | A utilitarian three-story Flemish bond brick school with Federal style details that was built in 1803. |
| 13 | Baltic Historic District | Baltic Historic District More images | August 3, 1987 (#87001247) | Roughly bounded by 5th Ave., River, High, Main, W. Main, and the Shetucket River 41°37′02″N 72°05′06″W﻿ / ﻿41.6172°N 72.085°W﻿ / 41.6172; -72.085﻿ (Baltic Historic District) | Sprague | |
| 14 | Acors Barns House | Acors Barns House More images | April 22, 1976 (#76001992) | 68 Federal St. 41°21′25″N 72°05′56″W﻿ / ﻿41.3569°N 72.0989°W﻿ / 41.3569; -72.0989﻿ (Acors Barns House) | New London | A two-and-one half story Greek Revival house with a gable roof and clapboarded exterior built in 1837. |
| 15 | Bean Hill Historic District | Bean Hill Historic District More images | December 8, 1982 (#82001006) | Huntington and Vergason Aves., Sylvia Lane, and W. Town St. 41°33′24″N 72°06′36″W﻿ / ﻿41.5567°N 72.11°W﻿ / 41.5567; -72.11﻿ (Bean Hill Historic District) | Norwich | |
| 16 | Bennett Rockshelter | Upload image | July 31, 1987 (#87001223) | Address Restricted | Old Lyme | |
| 17 | Gurdon Bill Store | Gurdon Bill Store | April 12, 1982 (#82004368) | 15 Church Hill Rd. 41°27′26″N 72°00′51″W﻿ / ﻿41.4572°N 72.0142°W﻿ / 41.4572; -72.0142﻿ (Gurdon Bill Store) | Ledyard | |
| 18 | Blackledge River Railroad Bridge | Blackledge River Railroad Bridge More images | July 31, 1986 (#86002109) | Former Air Line Railroad right-of-way and the Blackledge River 41°35′02″N 72°25′21″W﻿ / ﻿41.5839°N 72.4225°W﻿ / 41.5839; -72.4225﻿ (Blackledge River Railroad Bridge) | Colchester | A Warren truss bridge built by the New York, New Haven and Hartford Railroad around 1912. |
| 19 | Edward Bloom Silk Company Factory | Edward Bloom Silk Company Factory More images | March 5, 2021 (#100006266) | 90 Garfield Ave. 41°21′13″N 72°06′31″W﻿ / ﻿41.3537°N 72.1087°W﻿ / 41.3537; -72.1087﻿ (Edward Bloom Silk Company Factory) | New London | |
| 20 | Bozrah Congregational Church and Parsonage | Bozrah Congregational Church and Parsonage | July 26, 1991 (#91000952) | 17 and 23 Bozrah St. 41°33′24″N 72°09′56″W﻿ / ﻿41.5567°N 72.1656°W﻿ / 41.5567; -72.1656﻿ (Bozrah Congregational Church and Parsonage) | Bozrah | |
| 21 | Bradford-Huntington House | Bradford-Huntington House More images | October 6, 1970 (#70000720) | 16 Huntington Lane 41°33′06″N 72°05′30″W﻿ / ﻿41.5517°N 72.0917°W﻿ / 41.5517; -72.0917﻿ (Bradford-Huntington House) | Norwich | |
| 22 | Branford House | Branford House More images | January 23, 1984 (#84001158) | Shennecosset and Eastern Point Rds. 41°19′01″N 72°03′52″W﻿ / ﻿41.316944°N 72.064444°W﻿ / 41.316944; -72.064444﻿ (Branford House) | Groton | |
| 23 | Brewster Homestead | Brewster Homestead | December 28, 2000 (#00001561) | 306 Preston Rd. 41°34′25″N 71°58′10″W﻿ / ﻿41.573611°N 71.969444°W﻿ / 41.573611; -71.969444﻿ (Brewster Homestead) | Griswold | |
| 24 | Bridge No. 1860 | Bridge No. 1860 | July 29, 1993 (#93000644) | Massapeag Side Rd. (Route 433) over Shantok Brook 41°28′48″N 72°05′12″W﻿ / ﻿41.48°N 72.0867°W﻿ / 41.48; -72.0867﻿ (Bridge No. 1860) | Montville | Formerly in Fort Shantok State Park, now Mohegan tribal land. |
| 25 | Broad Street School | Broad Street School | January 19, 1984 (#84001162) | 100 Broad St. 41°32′05″N 72°04′35″W﻿ / ﻿41.534722°N 72.076389°W﻿ / 41.534722; -72.076389﻿ (Broad Street School) | Norwich | |
| 26 | William A. Buckingham House | William A. Buckingham House | April 29, 1982 (#82004379) | 307 Main St. 41°31′27″N 72°04′28″W﻿ / ﻿41.524167°N 72.074444°W﻿ / 41.524167; -72.074444﻿ (William A. Buckingham House) | Norwich | |
| 27 | Bulkeley School | Bulkeley School More images | August 13, 1981 (#81000613) | Huntington St. 41°21′31″N 72°06′03″W﻿ / ﻿41.358611°N 72.100833°W﻿ / 41.358611; -72.100833﻿ (Bulkeley School) | New London | |
| 28 | Burnett's Corner Historic District | Burnett's Corner Historic District More images | December 4, 1997 (#97001468) | Along Packer Rd., south of CT 184 41°23′17″N 71°58′45″W﻿ / ﻿41.388056°N 71.979167°W﻿ / 41.388056; -71.979167﻿ (Burnett's Corner Historic District) | Groton | |
| 29 | Burnham Tavern | Upload image | March 23, 2022 (#100007297) | 223 North Burnham Hwy. (CT 169) 41°37′32″N 72°00′44″W﻿ / ﻿41.6256°N 72.0121°W﻿ / 41.6256; -72.0121﻿ (Burnham Tavern) | Lisbon | |
| 30 | Carpenter House | Carpenter House More images | October 14, 1970 (#70000721) | 55 E. Town St. 41°33′01″N 72°05′43″W﻿ / ﻿41.550278°N 72.095278°W﻿ / 41.550278; -72.095278﻿ (Carpenter House) | Norwich | |
| 31 | Joseph Carpenter Silversmith Shop | Joseph Carpenter Silversmith Shop More images | October 6, 1970 (#70000722) | 71 E. Town St. 41°32′59″N 72°05′43″W﻿ / ﻿41.549722°N 72.095278°W﻿ / 41.549722; -72.095278﻿ (Joseph Carpenter Silversmith Shop) | Norwich | |
| 32 | Carroll Building | Carroll Building More images | November 14, 1982 (#82001007) | 9-15 Main St., and 14-20 Water St. 41°31′27″N 72°04′48″W﻿ / ﻿41.524167°N 72.08°W﻿ / 41.524167; -72.08﻿ (Carroll Building) | Norwich | |
| 33 | Cedar Grove Cemetery | Upload image | October 16, 2024 (#100010932) | 638 Broad Street 41°21′57″N 72°07′28″W﻿ / ﻿41.3658°N 72.1244°W﻿ / 41.3658; -72.1244﻿ (Cedar Grove Cemetery) | New London | |
| 34 | Central Vermont Railroad Pier | Central Vermont Railroad Pier More images | January 26, 2005 (#04001551) | State Pier Rd. 41°21′35″N 72°05′31″W﻿ / ﻿41.359722°N 72.091944°W﻿ / 41.359722; -72.091944﻿ (Central Vermont Railroad Pier) | New London | |
| 35 | Henry Champion House | Henry Champion House More images | October 10, 1972 (#72001323) | Westchester Rd. 41°32′39″N 72°24′50″W﻿ / ﻿41.544167°N 72.413889°W﻿ / 41.544167; -72.413889﻿ (Henry Champion House) | Colchester | Home of Henry Champion. |
| 36 | David Chapman Farmstead | David Chapman Farmstead | December 14, 1992 (#92001642) | 128 Stoddards Wharf Rd. 41°26′46″N 72°02′27″W﻿ / ﻿41.446111°N 72.040833°W﻿ / 41.446111; -72.040833﻿ (David Chapman Farmstead) | Ledyard | |
| 37 | CHARLES W. MORGAN | CHARLES W. MORGAN More images | November 13, 1966 (#66000804) | Mystic seaport 41°21′46″N 71°57′55″W﻿ / ﻿41.362778°N 71.965278°W﻿ / 41.362778; -71.965278﻿ (CHARLES W. MORGAN) | Stonington | In the Mystic section of town Only surviving wooden ship from the nineteenth-century American whaling fleet. |
| 38 | Capt. Richard Charlton House | Capt. Richard Charlton House More images | October 15, 1970 (#70000723) | 12 Mediterranean Lane 41°33′04″N 72°05′40″W﻿ / ﻿41.550991°N 72.094345°W﻿ / 41.550991; -72.094345﻿ (Capt. Richard Charlton House) | Norwich | |
| 39 | Chelsea Parade Historic District | Chelsea Parade Historic District More images | May 12, 1989 (#88003215) | Roughly bounded by Crescent, Broad, Grove, McKinley, Perkins, Slater, Buckingham, Maple Grove, Washington, and Lincoln 41°32′01″N 72°04′55″W﻿ / ﻿41.533611°N 72.081944°W﻿ / 41.533611; -72.081944﻿ (Chelsea Parade Historic District) | Norwich | |
| 40 | Civic Institutions Historic District | Civic Institutions Historic District | April 16, 1990 (#90000602) | 156-158, 171, and 173-175 Garfield Ave., 179 Colman St., 32 Wald Ave. 41°21′15″N 72°06′42″W﻿ / ﻿41.354167°N 72.111667°W﻿ / 41.354167; -72.111667﻿ (Civic Institutions Historic District) | New London | |
| 41 | Clark Homestead | Clark Homestead | December 1, 1978 (#78002875) | South of Lebanon on Madley Rd. 41°37′34″N 72°12′54″W﻿ / ﻿41.626111°N 72.215°W﻿ / 41.626111; -72.215﻿ (Clark Homestead) | Lebanon | |
| 42 | Andrew Clark House | Andrew Clark House | June 28, 1979 (#79002636) | Ross Hill Rd. 41°36′35″N 71°59′57″W﻿ / ﻿41.609722°N 71.999167°W﻿ / 41.609722; -71.999167﻿ (Andrew Clark House) | Lisbon | |
| 43 | Edward Cogswell House | Edward Cogswell House | December 15, 1993 (#93001378) | 1429 Hopeville Rd. 41°35′07″N 71°54′08″W﻿ / ﻿41.585278°N 71.902222°W﻿ / 41.585278; -71.902222﻿ (Edward Cogswell House) | Griswold | |
| 44 | Coit Street Historic District | Coit Street Historic District | February 19, 1988 (#88000068) | Roughly bounded by Coit St., Washington, Tilley St., Bank St., and Reed St. 41°21′05″N 72°06′01″W﻿ / ﻿41.351389°N 72.100278°W﻿ / 41.351389; -72.100278﻿ (Coit Street Historic District) | New London | |
| 45 | Colchester Village Historic District | Colchester Village Historic District More images | April 4, 1994 (#94000254) | Roughly along Broadway, Hayward, Linwood and Norwich Aves., Cragin Ct., Pierce Ln., Stebbins Rd., Main and S. Main Sts. 41°34′21″N 72°19′13″W﻿ / ﻿41.5725°N 72.320278°W﻿ / 41.5725; -72.320278﻿ (Colchester Village Historic District) | Colchester | |
| 46 | Commonwealth Works Site | Commonwealth Works Site | April 13, 1998 (#98000360) | Near Yantic Falls | Norwich | Early industrial site at Yantic Falls |
| 47 | Converse House and Barn | Converse House and Barn More images | October 6, 1970 (#70000716) | 185 Washington St. 41°32′03″N 72°05′00″W﻿ / ﻿41.534167°N 72.083333°W﻿ / 41.534167; -72.083333﻿ (Converse House and Barn) | Norwich | |
| 48 | Cooper Site | Upload image | October 15, 1987 (#87001224) | Address Restricted | Lyme | |
| 49 | Deshon-Allyn House | Deshon-Allyn House | October 28, 1970 (#70000700) | 613 Williams St. 41°22′21″N 72°06′19″W﻿ / ﻿41.3725°N 72.105278°W﻿ / 41.3725; -72.105278﻿ (Deshon-Allyn House) | New London | |
| 50 | Downtown New London Historic District | Downtown New London Historic District More images | April 13, 1979 (#79002665) | Roughly bounded by State, Bank, Tilley and Washington Sts. 41°21′10″N 72°05′47″W﻿ / ﻿41.352778°N 72.096389°W﻿ / 41.352778; -72.096389﻿ (Downtown New London Historic District) | New London | |
| 51 | Downtown Norwich Historic District | Downtown Norwich Historic District More images | April 4, 1985 (#85000707) | Roughly bounded by Union Sq., Park, Main and Shetucket Sts., and Washington Sq. 41°31′26″N 72°04′38″W﻿ / ﻿41.523889°N 72.077222°W﻿ / 41.523889; -72.077222﻿ (Downtown Norwich Historic District) | Norwich | |
| 52 | East District School | East District School | October 28, 1970 (#70000717) | 365 Washington St. 41°32′46″N 72°05′20″W﻿ / ﻿41.546111°N 72.088889°W﻿ / 41.546111; -72.088889﻿ (East District School) | Norwich | |
| 53 | EMMA C. BERRY (Fishing Sloop) | EMMA C. BERRY (Fishing Sloop) | October 12, 1994 (#94001649) | Greenmanville Ave. 41°21′35″N 71°58′00″W﻿ / ﻿41.359722°N 71.966667°W﻿ / 41.359722; -71.966667﻿ (EMMA C. BERRY (Fishing Sloop)) | Stonington | In the Mystic section of town One of the oldest surviving commercial vessels in the United States |
| 54 | Eolia-Harkness Estate | Eolia-Harkness Estate More images | November 20, 1986 (#86003331) | Great Neck Rd. 41°18′17″N 72°06′47″W﻿ / ﻿41.304722°N 72.113056°W﻿ / 41.304722; -72.113056﻿ (Eolia-Harkness Estate) | Waterford | |
| 55 | Capt. Thomas Fanning Farmstead | Capt. Thomas Fanning Farmstead More images | December 14, 1992 (#92001643) | 1004 Shewville Rd. 41°28′49″N 71°59′34″W﻿ / ﻿41.480278°N 71.992778°W﻿ / 41.480278; -71.992778﻿ (Capt. Thomas Fanning Farmstead) | Ledyard | |
| 56 | Abel H. Fish House | Abel H. Fish House | March 2, 1982 (#82004381) | Buckley Hill and Rathbun Hill Rds. 41°31′47″N 72°14′55″W﻿ / ﻿41.529722°N 72.248611°W﻿ / 41.529722; -72.248611﻿ (Abel H. Fish House) | Salem | |
| 57 | Fort Griswold | Fort Griswold More images | October 6, 1970 (#70000694) | Bounded by Baker Ave., Smith St., Park Ave., Monument Ave., and the Thames River 41°21′12″N 72°04′54″W﻿ / ﻿41.353333°N 72.081667°W﻿ / 41.353333; -72.081667﻿ (Fort Griswold) | Groton | |
| 58 | Fort Shantok | Fort Shantok | March 20, 1986 (#86000469) | Massapeag Side Road (State Route 433) 41°28′40″N 72°04′40″W﻿ / ﻿41.4778°N 72.0778°W﻿ / 41.4778; -72.0778﻿ (Fort Shantok) | Montville | Mohegan settlement and home of the seventeenth century sachem Uncas. Park open to the public. |
| 59 | Fort Trumbull | Fort Trumbull More images | September 22, 1972 (#72001333) | Fort Neck 41°20′40″N 72°05′40″W﻿ / ﻿41.344444°N 72.094444°W﻿ / 41.344444; -72.094444﻿ (Fort Trumbull) | New London | |
| 60 | Gales Ferry Historic District No. 1 | Gales Ferry Historic District No. 1 More images | December 14, 1992 (#92001639) | Junction of Hurlbutt Rd. and Riverside Pl. 41°25′48″N 72°05′34″W﻿ / ﻿41.43°N 72.092778°W﻿ / 41.43; -72.092778﻿ (Gales Ferry Historic District No. 1) | Ledyard | |
| 61 | Gales Ferry Historic District No. 2 | Gales Ferry Historic District No. 2 More images | August 22, 2002 (#02000865) | Roughly along Hurlbutt Rd., from Allyn Rd. to Military Highway 41°25′42″N 72°05′17″W﻿ / ﻿41.4283°N 72.088°W﻿ / 41.4283; -72.088﻿ (Gales Ferry Historic District No. 2) | Ledyard | |
| 62 | William Gorton Farm | William Gorton Farm | April 5, 1984 (#84001166) | 14 West Lane 41°17′24″N 72°12′21″W﻿ / ﻿41.289884°N 72.205773°W﻿ / 41.289884; -72.205773﻿ (William Gorton Farm) | East Lyme | |
| 63 | Graniteville Historic District | Graniteville Historic District | August 28, 2003 (#03000812) | Rope Ferry Rd. 41°20′06″N 72°09′13″W﻿ / ﻿41.335097°N 72.153689°W﻿ / 41.335097; -72.153689﻿ (Graniteville Historic District) | Waterford | Info available at Connecticut Trust for Historic Preservation |
| 64 | Greeneville Historic District | Greeneville Historic District More images | September 21, 2005 (#05001047) | Roughly along Boswell and Central Aves., Prospect and N. Main Sts., between Hickory and 14th Sts. 41°32′05″N 72°03′31″W﻿ / ﻿41.534722°N 72.058611°W﻿ / 41.534722; -72.058611﻿ (Greeneville Historic District) | Norwich | Info available at Connecticut Trust for Historic Preservation |
| 65 | Griswold Point Historic District | Upload image | February 10, 2023 (#100008625) | Over 200 acres (81 ha) at the confluence of the Black Hall and Connecticut Rivers 41°17′04″N 72°18′45″W﻿ / ﻿41.2844°N 72.3126°W﻿ / 41.2844; -72.3126﻿ (Griswold Point Historic District) | Old Lyme | Landscape preserving centuries of prehistoric and historic land use patterns. |
| 66 | Florence Griswold House and Museum | Florence Griswold House and Museum More images | April 19, 1993 (#93001604) | 96 Lyme St. 41°19′31″N 72°19′39″W﻿ / ﻿41.325278°N 72.3275°W﻿ / 41.325278; -72.3275﻿ (Florence Griswold House and Museum) | Old Lyme | Boarding house frequented by American impressionist artists such as Henry Ward Ranger, Childe Hassam, and Willard Metcalf. |
| 67 | Groton Bank Historic District | Groton Bank Historic District More images | March 24, 1983 (#83001287) | Roughly bounded by the Thames River, Broad, Cottage, and Latham Sts. 41°21′24″N 72°04′55″W﻿ / ﻿41.356667°N 72.081944°W﻿ / 41.356667; -72.081944﻿ (Groton Bank Historic District) | Groton | |
| 68 | Hadlyme North Historic District | Hadlyme North Historic District More images | December 8, 1988 (#88002686) | Roughly bounded by CT 82, Town St., Banning Rd., and Old Town St. 41°25′45″N 72°24′25″W﻿ / ﻿41.429167°N 72.406944°W﻿ / 41.429167; -72.406944﻿ (Hadlyme North Historic District) | Lyme | |
| 69 | Hadlyme Ferry Historic District | Hadlyme Ferry Historic District More images | December 21, 1994 (#94001444) | 150, 151, 158, 159, 162-1, 162-2 Ferry Rd. and ferry slip 41°25′09″N 72°25′41″W﻿ / ﻿41.419167°N 72.428056°W﻿ / 41.419167; -72.428056﻿ (Hadlyme Ferry Historic District) | Lyme | It is located in the area of, and may include, the Chester–Hadlyme Ferry |
| 70 | Hallville Mill Historic District | Hallville Mill Historic District More images | August 22, 1996 (#96000913) | Hallville Rd., Hall's Mill Rd., and CT 2A on Hallville Pond 41°29′40″N 72°02′00″W﻿ / ﻿41.494444°N 72.033333°W﻿ / 41.494444; -72.033333﻿ (Hallville Mill Historic District) | Preston | |
| 71 | Hamburg Bridge Historic District | Hamburg Bridge Historic District More images | March 10, 1983 (#83001288) | Joshuatown Rd. and Old Hamburg Rd. 41°23′36″N 72°21′09″W﻿ / ﻿41.393333°N 72.3525°W﻿ / 41.393333; -72.3525﻿ (Hamburg Bridge Historic District) | Lyme | |
| 72 | Hamburg Cove Site | Upload image | October 15, 1987 (#87001225) | Address Restricted | Lyme | |
| 73 | Jonathan Newton Harris House | Jonathan Newton Harris House | April 27, 1982 (#82004375) | 130 Broad St. 41°21′27″N 72°06′17″W﻿ / ﻿41.3575°N 72.104722°W﻿ / 41.3575; -72.104722﻿ (Jonathan Newton Harris House) | New London | |
| 74 | Hartford Colony | Hartford Colony | July 1, 2005 (#04000414) | Roughly Leonard Court, New Shore Rd., and Shore Rd. 41°18′19″N 72°08′26″W﻿ / ﻿41.305278°N 72.140556°W﻿ / 41.305278; -72.140556﻿ (Hartford Colony) | Waterford | |
| 75 | Hayward House | Hayward House More images | October 18, 1972 (#72001325) | 9 Hayward Ave. 41°34′29″N 72°19′53″W﻿ / ﻿41.574722°N 72.331389°W﻿ / 41.574722; -72.331389﻿ (Hayward House) | Colchester | |
| 76 | Hempstead Historic District | Hempstead Historic District More images | July 31, 1986 (#86002112) | Roughly bounded by Franklin St., Jay St., and Mountain Ave. 41°21′13″N 72°06′13″W﻿ / ﻿41.353611°N 72.103611°W﻿ / 41.353611; -72.103611﻿ (Hempstead Historic District) | New London | |
| 77 | Joshua Hempstead House | Joshua Hempstead House More images | October 15, 1970 (#70000701) | 11 Hempstead St. 41°21′09″N 72°06′08″W﻿ / ﻿41.3525°N 72.102222°W﻿ / 41.3525; -72.102222﻿ (Joshua Hempstead House) | New London | |
| 78 | Nathaniel Hempstead House | Nathaniel Hempstead House | December 2, 1970 (#70000702) | Corner of Jay, Hempstead, Coit, and Truman Sts. 41°21′06″N 72°06′09″W﻿ / ﻿41.351667°N 72.1025°W﻿ / 41.351667; -72.1025﻿ (Nathaniel Hempstead House) | New London | Also known as the Old Huguenot House. |
| 79 | House at 130 Mohegan Avenue | House at 130 Mohegan Avenue | October 28, 2009 (#08001379) | 130 Mohegan Ave. 41°22′29″N 72°06′09″W﻿ / ﻿41.374831°N 72.102483°W﻿ / 41.374831; -72.102483﻿ (House at 130 Mohegan Avenue) | New London | |
| 80 | Hodges Square Historic District | Hodges Square Historic District More images | October 10, 2017 (#100001733) | Bolles, Eastern, Central, Crystal & Terrace Aves., Bragaw, Williams, Rosemary, Grove & Adelaide Sts. 41°21′58″N 72°06′01″W﻿ / ﻿41.366084°N 72.100286°W﻿ / 41.366084; -72.100286﻿ (Hodges Square Historic District) | New London | |
| 81 | Huntington Street Baptist Church | Huntington Street Baptist Church More images | April 12, 1982 (#82004377) | 29 Huntington St. 41°21′12″N 72°05′57″W﻿ / ﻿41.353333°N 72.099167°W﻿ / 41.353333; -72.099167﻿ (Huntington Street Baptist Church) | New London | |
| 82 | Col. Joshua Huntington House | Col. Joshua Huntington House More images | February 23, 1972 (#72001343) | 11 Huntington Lane 41°33′04″N 72°05′27″W﻿ / ﻿41.551111°N 72.090833°W﻿ / 41.551111; -72.090833﻿ (Col. Joshua Huntington House) | Norwich | |
| 83 | Gen. Jedidiah Huntington House | Gen. Jedidiah Huntington House More images | October 6, 1970 (#70000724) | 23 E. Town St. 41°33′01″N 72°05′28″W﻿ / ﻿41.550278°N 72.091111°W﻿ / 41.550278; -72.091111﻿ (Gen. Jedidiah Huntington House) | Norwich | |
| 84 | Gov. Samuel Huntington House | Gov. Samuel Huntington House More images | October 6, 1970 (#70000725) | 34 E. Town St. 41°33′01″N 72°05′31″W﻿ / ﻿41.550278°N 72.091944°W﻿ / 41.550278; -72.091944﻿ (Gov. Samuel Huntington House) | Norwich | |
| 85 | Jail Hill Historic District | Jail Hill Historic District | April 19, 1999 (#99000431) | Roughly along Cedar, School, Fountain, Happy, and John Sts. 41°31′38″N 72°04′47″W﻿ / ﻿41.527222°N 72.079722°W﻿ / 41.527222; -72.079722﻿ (Jail Hill Historic District) | Norwich | |
| 86 | Jordan Village Historic District | Jordan Village Historic District | August 23, 1990 (#90001289) | Junction of North Rd. and Avery Ln. with Rope Ferry Rd. 41°20′23″N 72°08′33″W﻿ / ﻿41.339722°N 72.1425°W﻿ / 41.339722; -72.1425﻿ (Jordan Village Historic District) | Waterford | |
| 87 | Kinne Cemetery | Kinne Cemetery More images | April 12, 2001 (#01000351) | Jarvis Rd. 41°33′24″N 71°53′15″W﻿ / ﻿41.556667°N 71.8875°W﻿ / 41.556667; -71.8875﻿ (Kinne Cemetery) | Griswold | |
| 88 | L.A. DUNTON | L.A. DUNTON More images | November 4, 1993 (#93001612) | Mystic Seaport Museum 41°21′30″N 71°57′58″W﻿ / ﻿41.358333°N 71.966111°W﻿ / 41.358333; -71.966111﻿ (L.A. DUNTON) | Stonington | In the Mystic section of town Classic fishing schooner and one of the last sail-powered fishing vessels built. |
| 89 | Lamb Homestead | Lamb Homestead | September 3, 1991 (#91001175) | 47 Lambtown Rd. 41°24′21″N 72°00′47″W﻿ / ﻿41.405833°N 72.013056°W﻿ / 41.405833; -72.013056﻿ (Lamb Homestead) | Ledyard | |
| 90 | Dr. Daniel Lathrop School | Dr. Daniel Lathrop School | December 29, 1970 (#70000726) | 69 E. Town St. 41°32′59″N 72°05′43″W﻿ / ﻿41.549722°N 72.095278°W﻿ / 41.549722; -72.095278﻿ (Dr. Daniel Lathrop School) | Norwich | |
| 91 | Dr. Joshua Lathrop House | Dr. Joshua Lathrop House | December 29, 1970 (#70000727) | 377 Washington St. 41°32′48″N 72°05′18″W﻿ / ﻿41.546667°N 72.088333°W﻿ / 41.546667; -72.088333﻿ (Dr. Joshua Lathrop House) | Norwich | |
| 92 | Lathrop-Mathewson-Ross House | Lathrop-Mathewson-Ross House | April 15, 1982 (#82004370) | Ross Hill Rd. 41°37′19″N 71°59′27″W﻿ / ﻿41.621944°N 71.990833°W﻿ / 41.621944; -71.990833﻿ (Lathrop-Mathewson-Ross House) | Lisbon | |
| 93 | Laurel Hill Historic District | Laurel Hill Historic District More images | October 26, 1987 (#87000516) | Roughly bounded by Spruce St., Rogers and River Aves., and Talman St. 41°31′04″N 72°04′29″W﻿ / ﻿41.517778°N 72.074722°W﻿ / 41.517778; -72.074722﻿ (Laurel Hill Historic District) | Norwich | |
| 94 | Lebanon Green Historic District | Lebanon Green Historic District More images | June 4, 1979 (#79002666) | CT 87 and W. Town St. 41°38′26″N 72°13′08″W﻿ / ﻿41.640556°N 72.218889°W﻿ / 41.640556; -72.218889﻿ (Lebanon Green Historic District) | Lebanon | |
| 95 | Thomas Lee House | Thomas Lee House | October 6, 1970 (#70000693) | CT 156 and Giant's Neck Rd. 41°19′03″N 72°14′20″W﻿ / ﻿41.3175°N 72.238889°W﻿ / 41.3175; -72.238889﻿ (Thomas Lee House) | East Lyme | |
| 96 | Leffingwell Inn | Leffingwell Inn More images | December 29, 1970 (#70000728) | 348 Washington St. 41°32′32″N 72°05′17″W﻿ / ﻿41.542222°N 72.088056°W﻿ / 41.542222; -72.088056﻿ (Leffingwell Inn) | Norwich | |
| 97 | Nathan Lester House | Nathan Lester House | June 30, 1972 (#72001328) | Vinegar Hill Rd. 41°25′24″N 72°03′08″W﻿ / ﻿41.423333°N 72.052222°W﻿ / 41.423333; -72.052222﻿ (Nathan Lester House) | Ledyard | |
| 98 | Timothy Lester Farmstead | Timothy Lester Farmstead | December 4, 1998 (#98001441) | Junction of Crary, Browning and Terry Rds. 41°34′03″N 71°57′32″W﻿ / ﻿41.5675°N 71.958889°W﻿ / 41.5675; -71.958889﻿ (Timothy Lester Farmstead) | Griswold | |
| 99 | Lieutenant River III Site | Upload image | July 31, 1987 (#87001227) | Address Restricted | Old Lyme | |
| 100 | Lieutenant River IV Site | Upload image | July 31, 1987 (#87001228) | Address Restricted | Old Lyme | |
| 101 | Lieutenant River No. 2 | Upload image | July 31, 1987 (#87001226) | Address Restricted | Old Lyme | |
| 102 | Lighthouse Inn | Lighthouse Inn More images | August 1, 1996 (#96000822) | 6 Guthrie Pl. 41°19′00″N 72°05′39″W﻿ / ﻿41.316667°N 72.094167°W﻿ / 41.316667; -72.094167﻿ (Lighthouse Inn) | New London | |
| 103 | Little Plain Historic District | Little Plain Historic District More images | October 15, 1970 (#86003541) | Both sides of Union, Broadway, and Huntington Pl. in irregular pattern 41°31′47″N 72°04′37″W﻿ / ﻿41.529722°N 72.076944°W﻿ / 41.529722; -72.076944﻿ (Little Plain Historic District) | Norwich | |
| 104 | Long Society Meetinghouse | Long Society Meetinghouse | April 22, 1976 (#76001996) | East of Norwich off CT 165 on Long Society Rd. 41°32′04″N 72°02′09″W﻿ / ﻿41.534444°N 72.035833°W﻿ / 41.534444; -72.035833﻿ (Long Society Meetinghouse) | Preston | |
| 105 | Lord Cove Site | Upload image | October 15, 1987 (#87001229) | Address Restricted | Lyme | |
| 106 | Capt. Enoch Lord House | Capt. Enoch Lord House | May 16, 2007 (#07000418) | 17 Tantummaheag Rd. 41°20′30″N 72°20′35″W﻿ / ﻿41.34173°N 72.343125°W﻿ / 41.34173; -72.343125﻿ (Capt. Enoch Lord House) | Old Lyme | |
| 107 | Lyman Viaduct | Lyman Viaduct More images | August 21, 1986 (#86002729) | Dickinson Creek and former Boston and New York Air-Line Railroad right-of-way 41°33′49″N 72°27′08″W﻿ / ﻿41.563611°N 72.452222°W﻿ / 41.563611; -72.452222﻿ (Lyman Viaduct) | Colchester | |
| 108 | Main Sawmill | Main Sawmill More images | April 26, 1972 (#72001332) | Iron St. 41°26′49″N 71°59′14″W﻿ / ﻿41.446944°N 71.987222°W﻿ / 41.446944; -71.987222﻿ (Main Sawmill) | Ledyard | |
| 109 | Mashantucket Pequot Reservation | Mashantucket Pequot Reservation | June 11, 1986 (#86001323) | Northeastern Ledyard 41°27′32″N 71°58′21″W﻿ / ﻿41.4589°N 71.9724°W﻿ / 41.4589; -71.9724﻿ (Mashantucket Pequot Reservation) | Ledyard | Encompasses much of the Pequot Reservation lands. |
| 110 | Mechanic Street Historic District | Mechanic Street Historic District More images | June 7, 1988 (#88000653) | Roughly bounded by W. Broad St., Pawcatuck River, Cedar St., and Courtland St. 41°22′23″N 71°49′59″W﻿ / ﻿41.373056°N 71.833056°W﻿ / 41.373056; -71.833056﻿ (Mechanic Street Historic District) | Stonington | |
| 111 | James Merrill House | James Merrill House More images | August 28, 2013 (#13000618) | 107 Water St. 41°20′01″N 71°54′24″W﻿ / ﻿41.333704°N 71.906623°W﻿ / 41.333704; -71.906623﻿ (James Merrill House) | Stonington | Designated a National Historic Landmark on October 31, 2016. |
| 112 | Mill Brook Bridge | Mill Brook Bridge | January 2, 1997 (#96001498) | Blissville Rd., junction of Mill Brook 41°33′30″N 72°02′25″W﻿ / ﻿41.558333°N 72.040278°W﻿ / 41.558333; -72.040278﻿ (Mill Brook Bridge) | Lisbon | |
| 113 | Samuel Miner House | Samuel Miner House | June 18, 1976 (#76001995) | North of North Stonington off CT 2 on Hewitt Rd. 41°26′57″N 71°53′26″W﻿ / ﻿41.449167°N 71.890556°W﻿ / 41.449167; -71.890556﻿ (Samuel Miner House) | North Stonington | Destroyed by fire in 2003. |
| 114 | Montauk Avenue Historic District | Montauk Avenue Historic District | December 18, 1990 (#90001910) | Roughly bounded by Ocean, Willets, and Riverview Aves. and Faire Harbor 41°20′20″N 72°06′22″W﻿ / ﻿41.338889°N 72.106111°W﻿ / 41.338889; -72.106111﻿ (Montauk Avenue Historic District) | New London | |
| 115 | Monte Cristo Cottage | Monte Cristo Cottage More images | July 17, 1971 (#71001010) | 325 Pequot Ave. 41°19′55″N 72°05′47″W﻿ / ﻿41.331944°N 72.096389°W﻿ / 41.331944; -72.096389﻿ (Monte Cristo Cottage) | New London | Summer home of playwright Eugene O'Neill |
| 116 | Mystic Bank | Mystic Bank | August 8, 2014 (#14000476) | 39 Main St. 41°23′25″N 71°57′36″W﻿ / ﻿41.3903°N 71.9600°W﻿ / 41.3903; -71.9600﻿ (Mystic Bank) | Old Mystic | |
| 117 | Mystic Bridge Historic District | Mystic Bridge Historic District More images | August 31, 1979 (#79002671) | U.S. Route 1 and CT 27 41°21′25″N 71°57′51″W﻿ / ﻿41.356944°N 71.964167°W﻿ / 41.356944; -71.964167﻿ (Mystic Bridge Historic District) | Stonington | In the Mystic section of town |
| 118 | Mystic River Historic District | Mystic River Historic District | August 24, 1979 (#79002728) | U.S. Route 1 and CT 215 41°21′15″N 71°58′30″W﻿ / ﻿41.354167°N 71.975°W﻿ / 41.354167; -71.975﻿ (Mystic River Historic District) | Groton | In the Mystic section of town (West Mystic) |
| 119 | Natcon Site | Upload image | July 31, 1987 (#87001230) | Address Restricted | Old Lyme | |
| 120 | New England Hebrew Farmers of the Emanuel Society Synagogue and Creamery Site | New England Hebrew Farmers of the Emanuel Society Synagogue and Creamery Site | February 28, 2012 (#12000039) | Junction of CT 161 & CT 85 41°25′40″N 72°12′55″W﻿ / ﻿41.427798°N 72.215175°W﻿ / 41.427798; -72.215175﻿ (New England Hebrew Farmers of the Emanuel Society Synagogue and Creamery Site) | Montville | |
| 121 | New London County Courthouse | New London County Courthouse More images | October 15, 1970 (#70000705) | 70 Hunting St. 41°21′18″N 72°06′01″W﻿ / ﻿41.355°N 72.100278°W﻿ / 41.355; -72.100278﻿ (New London County Courthouse) | New London | |
| 122 | New London Customhouse | New London Customhouse More images | October 15, 1970 (#70000706) | 150 Bank St. 41°21′08″N 72°05′46″W﻿ / ﻿41.352222°N 72.096111°W﻿ / 41.352222; -72.096111﻿ (New London Customhouse) | New London | |
| 123 | New London Harbor Lighthouse | New London Harbor Lighthouse More images | May 29, 1990 (#89001470) | Lower Pequot Ave. 41°18′59″N 72°05′25″W﻿ / ﻿41.316389°N 72.090278°W﻿ / 41.316389; -72.090278﻿ (New London Harbor Lighthouse) | New London | |
| 124 | New London Ledge Lighthouse | New London Ledge Lighthouse More images | May 29, 1990 (#89001471) | Entrance to New London Harbor on the eastern side of the main channel 41°18′20″N 72°04′41″W﻿ / ﻿41.305556°N 72.078056°W﻿ / 41.305556; -72.078056﻿ (New London Ledge Lighthouse) | Groton | |
| 125 | New London Public Library | New London Public Library More images | October 15, 1970 (#70000712) | 63 Huntington St. 41°21′18″N 72°06′00″W﻿ / ﻿41.355°N 72.1°W﻿ / 41.355; -72.1﻿ (New London Public Library) | New London | |
| 126 | New London Railroad Station | New London Railroad Station More images | June 28, 1971 (#71000913) | State St. 41°21′15″N 72°05′36″W﻿ / ﻿41.354167°N 72.093333°W﻿ / 41.354167; -72.093333﻿ (New London Railroad Station) | New London | |
| 127 | Noank Historic District | Noank Historic District | August 10, 1979 (#79002656) | CT 215 41°19′28″N 71°59′20″W﻿ / ﻿41.324444°N 71.988889°W﻿ / 41.324444; -71.988889﻿ (Noank Historic District) | Groton | |
| 128 | North Stonington Village Historic District | North Stonington Village Historic District More images | March 17, 1983 (#83001289) | CT 2, Main St., Wyassup, Babcock, Caswell, and Rocky Hollow Rds. 41°26′26″N 71°52′59″W﻿ / ﻿41.440556°N 71.883056°W﻿ / 41.440556; -71.883056﻿ (North Stonington Village Historic District) | North Stonington | |
| 129 | Norwich Hospital District | Norwich Hospital District More images | January 22, 1988 (#87002424) | CT 12 41°29′22″N 72°04′26″W﻿ / ﻿41.489444°N 72.073889°W﻿ / 41.489444; -72.073889﻿ (Norwich Hospital District) | Norwich-Preston | |
| 130 | Norwich Town Hall | Norwich Town Hall More images | December 22, 1983 (#83003589) | Union St. and Broadway 41°31′34″N 72°04′34″W﻿ / ﻿41.526249°N 72.075984°W﻿ / 41.526249; -72.075984﻿ (Norwich Town Hall) | Norwich | |
| 131 | Norwichtown Historic District | Norwichtown Historic District More images | January 17, 1973 (#73001951) | Roughly bounded by Huntington Ln., Scotland Rd., and Washington, Town and E. Town Sts. 41°32′52″N 72°05′33″W﻿ / ﻿41.547778°N 72.0925°W﻿ / 41.547778; -72.0925﻿ (Norwichtown Historic District) | Norwich | |
| 132 | William Noyes Farmstead | William Noyes Farmstead | December 14, 1992 (#92001644) | 340 Gallup Hill Rd. 41°24′30″N 71°58′01″W﻿ / ﻿41.408374°N 71.967049°W﻿ / 41.408374; -71.967049﻿ (William Noyes Farmstead) | Ledyard | |
| 133 | Occum Hydroelectric Plant and Dam | Occum Hydroelectric Plant and Dam | December 6, 1996 (#96001459) | North of Bridge St., on the western side of the Shetucket River 41°35′49″N 72°03′01″W﻿ / ﻿41.596944°N 72.050278°W﻿ / 41.596944; -72.050278﻿ (Occum Hydroelectric Plant and Dam) | Norwich and Sprague | |
| 134 | Ohev Sholem Synagogue | Ohev Sholem Synagogue | May 11, 1995 (#95000562) | 109 Blinman St. 41°21′04″N 72°06′09″W﻿ / ﻿41.351066°N 72.102380°W﻿ / 41.351066; -72.102380﻿ (Ohev Sholem Synagogue) | New London | |
| 135 | Oil Mill Historic District | Upload image | February 2, 2023 (#100008593) | Gurley, Oil Mill, and Boston Post Rds. 41°22′20″N 72°11′31″W﻿ / ﻿41.3722°N 72.1919°W﻿ / 41.3722; -72.1919﻿ (Oil Mill Historic District) | Waterford | |
| 136 | Old Lyme Historic District | Old Lyme Historic District More images | October 14, 1971 (#71000916) | Lyme St. from Shore Rd. to Sill Lane, Old Boston Post Rd. from Sill Lane to Rose Lane 41°19′18″N 72°19′40″W﻿ / ﻿41.321667°N 72.327778°W﻿ / 41.321667; -72.327778﻿ (Old Lyme Historic District) | Old Lyme | |
| 137 | Oswegatchie Historic District | Oswegatchie Historic District | September 15, 2005 (#05001043) | East St., Riverside, Plant, Park Drs., and Sharwandassee and Oswegatchie Rds. 41°21′07″N 72°11′05″W﻿ / ﻿41.351992°N 72.184618°W﻿ / 41.351992; -72.184618﻿ (Oswegatchie Historic District) | Waterford | |
| 138 | Capt. Nathaniel B. Palmer House | Capt. Nathaniel B. Palmer House More images | June 19, 1996 (#96000971) | 40 Palmer St. 41°20′34″N 71°54′28″W﻿ / ﻿41.342778°N 71.907778°W﻿ / 41.342778; -71.907778﻿ (Capt. Nathaniel B. Palmer House) | Stonington | Home of pioneering Antarctic explorer and seal hunter Nathaniel Palmer. |
| 139 | John Palmer House | John Palmer House | January 12, 2005 (#04001461) | 291 N. Burnham Highway 41°37′51″N 72°00′21″W﻿ / ﻿41.630833°N 72.005833°W﻿ / 41.630833; -72.005833﻿ (John Palmer House) | Lisbon | |
| 140 | William Park House | William Park House | March 7, 2007 (#07000106) | 330 Main St. 41°38′42″N 72°03′57″W﻿ / ﻿41.645°N 72.065833°W﻿ / 41.645; -72.065833﻿ (William Park House) | Sprague | |
| 141 | Peck Tavern | Peck Tavern | April 12, 1982 (#82004380) | 1 Sill Lane 41°19′49″N 72°19′30″W﻿ / ﻿41.330278°N 72.325°W﻿ / 41.330278; -72.325﻿ (Peck Tavern) | Old Lyme | |
| 142 | Pequot Fort | Pequot Fort | January 19, 1990 (#89002294) | Pequot Ave. 41°21′35″N 71°58′36″W﻿ / ﻿41.359757°N 71.976752°W﻿ / 41.359757; -71.976752﻿ (Pequot Fort) | Groton | |
| 143 | Pequotsepos Manor | Pequotsepos Manor | June 15, 1979 (#79002650) | Pequotsepos Rd. 41°21′46″N 71°56′54″W﻿ / ﻿41.362778°N 71.948333°W﻿ / 41.362778; -71.948333﻿ (Pequotsepos Manor) | Stonington | In the Mystic section of town |
| 144 | Perkins-Bill House | Perkins-Bill House | July 20, 2000 (#00000817) | 1040 Long Cove Rd. 41°24′34″N 72°04′36″W﻿ / ﻿41.409334°N 72.076690°W﻿ / 41.409334; -72.076690﻿ (Perkins-Bill House) | Ledyard | |
| 145 | Perkins-Rockwell House | Perkins-Rockwell House | October 17, 1985 (#85003144) | 42 Rockwell St. 41°32′05″N 72°04′45″W﻿ / ﻿41.534722°N 72.079167°W﻿ / 41.534722; -72.079167﻿ (Perkins-Rockwell House) | Norwich | |
| 146 | Morton Freeman Plant Hunting Lodge | Morton Freeman Plant Hunting Lodge | December 12, 1988 (#88002691) | 56 Stone Ranch Rd. 41°21′25″N 72°15′59″W﻿ / ﻿41.356944°N 72.266389°W﻿ / 41.356944; -72.266389﻿ (Morton Freeman Plant Hunting Lodge) | East Lyme | |
| 147 | Poquetanuck Village Historic District | Poquetanuck Village Historic District More images | August 22, 1996 (#96000912) | Roughly along Main St. between CT 117 and Middle Rd. and along School House and Cider Mill Rd. 41°29′14″N 72°02′31″W﻿ / ﻿41.487222°N 72.041944°W﻿ / 41.487222; -72.041944﻿ (Poquetanuck Village Historic District) | Preston | Poquetanuck is a populated place with a long history as a "typical small New England village" |
| 148 | Post Hill Historic District | Post Hill Historic District | August 5, 1993 (#93000812) | Roughly bounded by Broad, Center, Vauxhall, Berkeley, Fremont, and Walker Sts. 41°21′37″N 72°06′17″W﻿ / ﻿41.360278°N 72.104722°W﻿ / 41.360278; -72.104722﻿ (Post Hill Historic District) | New London | |
| 149 | Preston City Historic District | Preston City Historic District More images | July 31, 1987 (#87000452) | Amos and Old Shetucket Rds., Northwest Corner Rd., and CT 164 41°31′38″N 71°58′33″W﻿ / ﻿41.527222°N 71.975833°W﻿ / 41.527222; -71.975833﻿ (Preston City Historic District) | Preston | |
| 150 | Prospect Street Historic District | Prospect Street Historic District More images | July 31, 1986 (#86002114) | Roughly bounded by Bulkeley Pl., Huntington, Federal, and Hempstead Sts. 41°21′27″N 72°06′02″W﻿ / ﻿41.3575°N 72.100556°W﻿ / 41.3575; -72.100556﻿ (Prospect Street Historic District) | New London | |
| 151 | Quaker Hill Historic District | Quaker Hill Historic District More images | April 11, 2002 (#02000337) | Roughly along Old Norwich Rd. from Richards Grove Rd. to Mohegan Ave. Parkway 41°24′12″N 72°06′35″W﻿ / ﻿41.403333°N 72.109722°W﻿ / 41.403333; -72.109722﻿ (Quaker Hill Historic District) | Waterford | |
| 152 | John Randall House | John Randall House | December 1, 1978 (#78002877) | Southeast of North Stonington on CT 2 41°24′59″N 71°51′37″W﻿ / ﻿41.416389°N 71.860278°W﻿ / 41.416389; -71.860278﻿ (John Randall House) | North Stonington | |
| 153 | Raymond-Bradford Homestead | Raymond-Bradford Homestead | April 16, 1982 (#82004372) | Raymond Hill Rd. 41°29′00″N 72°09′43″W﻿ / ﻿41.483333°N 72.161944°W﻿ / 41.483333; -72.161944﻿ (Raymond-Bradford Homestead) | Montville | |
| 154 | River Road Stone Arch Railroad Bridge | River Road Stone Arch Railroad Bridge More images | August 21, 1986 (#86002727) | River Rd. and former Air Line Railroad right-of-way 41°34′49″N 72°25′32″W﻿ / ﻿41.580278°N 72.425556°W﻿ / 41.580278; -72.425556﻿ (River Road Stone Arch Railroad Bridge) | Colchester | |
| 155 | Rocky Neck Pavilion | Rocky Neck Pavilion More images | September 4, 1986 (#86001745) | Lands End Point, Rocky Neck State Park 41°17′56″N 72°14′48″W﻿ / ﻿41.298889°N 72.246667°W﻿ / 41.298889; -72.246667﻿ (Rocky Neck Pavilion) | East Lyme | |
| 156 | Rossie Velvet Mill Historic District | Rossie Velvet Mill Historic District More images | March 9, 2007 (#07000110) | Roughly along Bruggerman Court, Bruggerman Place, Greenmanville Ave., Hinckly St., Pleasant St., Rossie St., and Velvet St. 41°21′44″N 71°57′48″W﻿ / ﻿41.362348°N 71.963239°W﻿ / 41.362348; -71.963239﻿ (Rossie Velvet Mill Historic District) | Stonington | In the Mystic section of town |
| 157 | SABINO (steamer) | SABINO (steamer) More images | October 5, 1992 (#92001887) | Mystic Seaport Museum 41°21′39″N 71°58′02″W﻿ / ﻿41.360833°N 71.967222°W﻿ / 41.360833; -71.967222﻿ (SABINO (steamer)) | Stonington | In the Mystic section of town One of only two surviving members of the American "mosquito fleet", small steamers that served the inland waters of the United States. |
| 158 | St. James Episcopal Church | St. James Episcopal Church More images | July 21, 2004 (#90001098) | 125 Huntington St. 41°21′26″N 72°05′58″W﻿ / ﻿41.357169°N 72.099383°W﻿ / 41.357169; -72.099383﻿ (St. James Episcopal Church) | New London | |
| 159 | Salem Historic District | Salem Historic District More images | September 22, 1980 (#80004063) | CT 85 41°29′13″N 72°16′27″W﻿ / ﻿41.486944°N 72.274167°W﻿ / 41.486944; -72.274167﻿ (Salem Historic District) | Salem | |
| 160 | Selden Island Site | Upload image | October 15, 1987 (#87001231) | Address Restricted | Lyme | |
| 161 | Seventh Sister | Seventh Sister More images | July 31, 1986 (#86002103) | 67 River Rd. 41°25′25″N 72°25′53″W﻿ / ﻿41.423611°N 72.431389°W﻿ / 41.423611; -72.431389﻿ (Seventh Sister) | Lyme | Now known as Gillette Castle. |
| 162 | Shaw Mansion | Shaw Mansion More images | December 29, 1970 (#70000713) | 11 Blinman St. 41°21′02″N 72°06′06″W﻿ / ﻿41.350556°N 72.101667°W﻿ / 41.350556; -72.101667﻿ (Shaw Mansion) | New London | |
| 163 | Slater Library and Fanning Annex | Slater Library and Fanning Annex More images | January 28, 2002 (#01001529) | 26 Main St. 41°36′30″N 71°59′03″W﻿ / ﻿41.608333°N 71.984167°W﻿ / 41.608333; -71.984167﻿ (Slater Library and Fanning Annex) | Griswold | |
| 164 | Jabez Smith House | Jabez Smith House | May 15, 1981 (#81000615) | North Rd. 41°21′11″N 72°01′46″W﻿ / ﻿41.353056°N 72.029444°W﻿ / 41.353056; -72.029444﻿ (Jabez Smith House) | Groton | |
| 165 | Samuel Smith House | Samuel Smith House | June 4, 1979 (#79002668) | 82 Plants Dam Rd. 41°20′28″N 72°14′52″W﻿ / ﻿41.341111°N 72.247778°W﻿ / 41.341111; -72.247778﻿ (Samuel Smith House) | East Lyme | |
| 166 | Shubel Smith House | Shubel Smith House More images | December 20, 1996 (#96001462) | 515 Pumpkin Hill Rd. 41°25′23″N 71°59′08″W﻿ / ﻿41.423056°N 71.985556°W﻿ / 41.423056; -71.985556﻿ (Shubel Smith House) | Ledyard | |
| 167 | Springbank | Springbank | August 17, 2001 (#01000880) | 69 Neck Rd. 41°19′54″N 72°20′16″W﻿ / ﻿41.331667°N 72.337778°W﻿ / 41.331667; -72.337778﻿ (Springbank) | Old Lyme | |
| 168 | Robert Stanton House | Robert Stanton House More images | June 4, 1979 (#79002648) | Green Haven Rd. 41°20′03″N 71°51′02″W﻿ / ﻿41.334167°N 71.850556°W﻿ / 41.334167; -71.850556﻿ (Robert Stanton House) | Stonington | |
| 169 | Capt. Mark Stoddard Farmstead | Capt. Mark Stoddard Farmstead | December 14, 1992 (#92001640) | 24 Vinegar Hill Rd. 41°26′09″N 72°03′22″W﻿ / ﻿41.435833°N 72.056111°W﻿ / 41.435833; -72.056111﻿ (Capt. Mark Stoddard Farmstead) | Ledyard | |
| 170 | Stonington Cemetery | Stonington Cemetery | April 19, 2018 (#100002321) | SE corner of Main St. & US 1 41°21′02″N 71°54′11″W﻿ / ﻿41.350627°N 71.902934°W﻿ / 41.350627; -71.902934﻿ (Stonington Cemetery) | Stonington | |
| 171 | Stonington Harbor Lighthouse | Stonington Harbor Lighthouse More images | January 1, 1976 (#76002000) | 7 Water St. 41°19′42″N 71°54′21″W﻿ / ﻿41.328333°N 71.905833°W﻿ / 41.328333; -71.905833﻿ (Stonington Harbor Lighthouse) | Stonington | |
| 172 | Stonington High School | Stonington High School | August 17, 1978 (#78002880) | Church St. 41°20′04″N 71°54′10″W﻿ / ﻿41.334505°N 71.902779°W﻿ / 41.334505; -71.902779﻿ (Stonington High School) | Stonington | |
| 173 | Taftville | Taftville More images | December 1, 1978 (#78002878) | North of Norwich at CT 93 and CT 97 41°34′04″N 72°02′57″W﻿ / ﻿41.567778°N 72.049167°W﻿ / 41.567778; -72.049167﻿ (Taftville) | Norwich | |
| 174 | Telephone Exchange Building | Telephone Exchange Building | November 28, 1983 (#83003590) | 23 Union St. 41°31′36″N 72°04′35″W﻿ / ﻿41.526639°N 72.076455°W﻿ / 41.526639; -72.076455﻿ (Telephone Exchange Building) | Norwich | |
| 175 | Thames Shipyard | Thames Shipyard More images | April 17, 1975 (#75001939) | Farnsworth St. 41°22′43″N 72°05′53″W﻿ / ﻿41.378611°N 72.098056°W﻿ / 41.378611; -72.098056﻿ (Thames Shipyard) | New London | |
| 176 | The Seaside | The Seaside | August 15, 1995 (#95001007) | 36 Shore Rd. 41°18′08″N 72°07′55″W﻿ / ﻿41.302222°N 72.131944°W﻿ / 41.302222; -72.131944﻿ (The Seaside) | Waterford | |
| 177 | Simon Tiffany House | Simon Tiffany House | June 30, 1983 (#83001290) | Darling Rd. 41°26′37″N 72°18′16″W﻿ / ﻿41.443611°N 72.304444°W﻿ / 41.443611; -72.304444﻿ (Simon Tiffany House) | Salem | |
| 178 | John Trumbull Birthplace | John Trumbull Birthplace More images | October 15, 1966 (#66000883) | The Common 41°38′10″N 72°12′56″W﻿ / ﻿41.636111°N 72.215556°W﻿ / 41.636111; -72.215556﻿ (John Trumbull Birthplace) | Lebanon | Home of Connecticut governor Joseph Trumbull and birthplace of his son John Trumbull, the "painter of the Revolution" |
| 179 | Dr. Philip Turner House | Dr. Philip Turner House | October 15, 1970 (#70000729) | 29 W. Town St. 41°32′55″N 72°05′55″W﻿ / ﻿41.548611°N 72.098611°W﻿ / 41.548611; -72.098611﻿ (Dr. Philip Turner House) | Norwich | |
| 180 | U.S.S. NAUTILUS (submarine) | U.S.S. NAUTILUS (submarine) More images | May 16, 1979 (#79002653) | Naval Submarine Base 41°23′39″N 72°05′34″W﻿ / ﻿41.3942°N 72.0928°W﻿ / 41.3942; -72.0928﻿ (U.S.S. NAUTILUS (submarine)) | Groton | The world's first operational nuclear-powered submarine. |
| 181 | Uncasville Mill Historic District | Uncasville Mill Historic District | July 19, 2021 (#100006732) | 42, 46 Pink Row; 3-35 Crescent St. (odd #s), 5-19 Blumenthal Dr. (odd #s), 362 CT 32 41°26′14″N 72°06′28″W﻿ / ﻿41.4372°N 72.1077°W﻿ / 41.4372; -72.1077﻿ (Uncasville Mill Historic District) | Montville | |
| 182 | Uncasville School | Uncasville School | February 23, 2001 (#00001327) | 310 Norwich-New London Turnpike 41°26′04″N 72°06′42″W﻿ / ﻿41.4344°N 72.1117°W﻿ / 41.4344; -72.1117﻿ (Uncasville School) | Montville | |
| 183 | United States Housing Corporation Historic District | United States Housing Corporation Historic District | April 16, 1990 (#90000603) | Roughly bounded by Colman, Fuller, and W. Pleasant Sts., and Jefferson Ave. 41°21′17″N 72°06′49″W﻿ / ﻿41.3547°N 72.1136°W﻿ / 41.3547; -72.1136﻿ (United States Housing Corporation Historic District) | New London | |
| 184 | US Post Office-New London Main | US Post Office-New London Main | January 21, 1986 (#86000124) | 27 Masonic St. 41°21′19″N 72°05′48″W﻿ / ﻿41.3553°N 72.0967°W﻿ / 41.3553; -72.0967﻿ (US Post Office-New London Main) | New London | |
| 185 | US Post Office-Norwich Main | US Post Office-Norwich Main | July 17, 1986 (#86002271) | 340 Main St. 41°31′28″N 72°04′19″W﻿ / ﻿41.5244°N 72.0719°W﻿ / 41.5244; -72.0719﻿ (US Post Office-Norwich Main) | Norwich | |
| 186 | Edward Waldo House | Edward Waldo House More images | November 21, 1978 (#78002879) | South of Scotland on Waldo Rd. 41°39′33″N 72°06′05″W﻿ / ﻿41.6592°N 72.1014°W﻿ / 41.6592; -72.1014﻿ (Edward Waldo House) | Scotland and Sprague | Saltbox home of Waldo family from 1715-1971. House located in Windham County, while property extends into New London County. |
| 187 | Walnut Grove | Walnut Grove | September 21, 2005 (#05001044) | 305 Great Neck Rd. 41°18′35″N 72°06′39″W﻿ / ﻿41.3098°N 72.1109°W﻿ / 41.3098; -72.1109﻿ (Walnut Grove) | Waterford | |
| 188 | War Office | War Office More images | October 6, 1970 (#70000695) | W. Town St. 41°38′13″N 72°12′55″W﻿ / ﻿41.6369°N 72.2153°W﻿ / 41.6369; -72.2153﻿ (War Office) | Lebanon | |
| 189 | Whale Oil Row | Whale Oil Row More images | December 29, 1970 (#70000714) | 105-119 Huntington St. 41°21′22″N 72°06′00″W﻿ / ﻿41.3561°N 72.1°W﻿ / 41.3561; -72.1﻿ (Whale Oil Row) | New London | |
| 190 | Wheeler Block | Wheeler Block | April 16, 1993 (#93000312) | 40 Norwich Ave. 41°34′24″N 72°19′53″W﻿ / ﻿41.5733°N 72.3314°W﻿ / 41.5733; -72.3314﻿ (Wheeler Block) | Colchester | |
| 191 | Whitehall Mansion | Whitehall Mansion | April 12, 1979 (#79002647) | Off CT 27 41°22′37″N 71°57′20″W﻿ / ﻿41.3769°N 71.9556°W﻿ / 41.3769; -71.9556﻿ (Whitehall Mansion) | Stonington | |
| 192 | William Clark Company Thread Mill | William Clark Company Thread Mill More images | December 16, 2008 (#08001190) | 21 Pawcatuck Ave., 12 and 22 River Rd. 41°21′37″N 71°50′25″W﻿ / ﻿41.3604°N 71.8403°W﻿ / 41.3604; -71.8403﻿ (William Clark Company Thread Mill) | Stonington | |
| 193 | Williams Memorial Institute | Williams Memorial Institute More images | January 30, 1978 (#78002876) | 110 Broad St. 41°21′26″N 72°06′13″W﻿ / ﻿41.3572°N 72.1036°W﻿ / 41.3572; -72.1036﻿ (Williams Memorial Institute) | New London | |
| 194 | Williams Memorial Park Historic District | Williams Memorial Park Historic District More images | December 3, 1987 (#87002057) | Roughly bounded by Hempstead & Broad Sts., Williams Memorial Parkway, and Mercer 41°21′22″N 72°06′07″W﻿ / ﻿41.3561°N 72.1019°W﻿ / 41.3561; -72.1019﻿ (Williams Memorial Park Historic District) | New London | |
| 195 | William Williams House | William Williams House More images | November 11, 1971 (#71001012) | Junction of CT 87 and 207 41°38′10″N 72°12′46″W﻿ / ﻿41.6361°N 72.2128°W﻿ / 41.6361; -72.2128﻿ (William Williams House) | Lebanon | Home of William Williams, Connecticut delegate to the Continental Congress and signer of the Declaration of Independence |
| 196 | John Wilson House | John Wilson House More images | August 23, 1985 (#85001827) | 11 Ashland St. 41°36′21″N 71°58′50″W﻿ / ﻿41.6058°N 71.9806°W﻿ / 41.6058; -71.9806﻿ (John Wilson House) | Griswold | |
| 197 | Winthrop Mill | Winthrop Mill More images | November 30, 1982 (#82001008) | Mill St. 41°21′47″N 72°06′00″W﻿ / ﻿41.3631°N 72.1°W﻿ / 41.3631; -72.1﻿ (Winthrop Mill) | New London | |
| 198 | Woodbridge Farm | Woodbridge Farm | December 1, 1997 (#97001467) | 29, 30, and 90 Woodbridge Rd. 41°27′40″N 72°18′22″W﻿ / ﻿41.4611°N 72.3061°W﻿ / 41.4611; -72.3061﻿ (Woodbridge Farm) | Salem | |
| 199 | Ashbel Woodward House | Ashbel Woodward House More images | April 8, 1992 (#92000264) | 387 CT 32 41°36′17″N 72°08′12″W﻿ / ﻿41.6047°N 72.1367°W﻿ / 41.6047; -72.1367﻿ (Ashbel Woodward House) | Franklin | |
| 200 | Nathan A. Woodworth House | Nathan A. Woodworth House | June 1, 1982 (#82004378) | 28 Channing St. 41°21′33″N 72°06′20″W﻿ / ﻿41.3592°N 72.1056°W﻿ / 41.3592; -72.1056﻿ (Nathan A. Woodworth House) | New London | |
| 201 | Wylie School | Wylie School | December 19, 1991 (#91001742) | Junction of Ekonk Hill and Wylie School Rds. 41°36′34″N 71°50′38″W﻿ / ﻿41.6094°N 71.8439°W﻿ / 41.6094; -71.8439﻿ (Wylie School) | Voluntown | |
| 202 | Yantic Falls Historic District | Yantic Falls Historic District More images | June 28, 1972 (#72001344) | Yantic St. 41°32′01″N 72°05′19″W﻿ / ﻿41.5336°N 72.0886°W﻿ / 41.5336; -72.0886﻿ (Yantic Falls Historic District) | Norwich | |
| 203 | Yantic Woolen Company Mill | Yantic Woolen Company Mill More images | July 25, 1996 (#96000780) | 6 Franklin Rd. 41°33′38″N 72°07′30″W﻿ / ﻿41.5606°N 72.125°W﻿ / 41.5606; -72.125﻿ (Yantic Woolen Company Mill) | Norwich | |
| 204 | Edward Yeomans House | Edward Yeomans House | December 22, 1978 (#78002874) | East of Groton on Brook St. 41°19′49″N 72°00′12″W﻿ / ﻿41.3303°N 72.0033°W﻿ / 41.3303; -72.0033﻿ (Edward Yeomans House) | Groton | |

## Former listing

| | Name on the Register | Image | Date listed | Date removed | Location | City or town | Description |
| 1 | Ashland Mill Bridge | Ashland Mill Bridge | April 1, 1999 (#99000407) | February 2, 2016 | Over the Pachaug River, near Ashland St. 41°31′31″N 71°58′28″W﻿ / ﻿41.5253°N 71.9744°W﻿ / 41.5253; -71.9744﻿ (Ashland Mill Bridge) | Griswold | A 65-foot-long (20 m) bridge made by the Berlin Iron Bridge Company |