# National Register of Historic Places listings in Allen County, Ohio

This is a list of the National Register of Historic Places listings in Allen County, Ohio.
This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Allen County, Ohio, 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 31 properties and districts listed on the National Register in the county, including 1 National Historic Landmark. Another 2 properties were once listed but have been removed.
This National Park Service list is complete through NPS recent listings posted February 28, 2025.
Download coordinates as:
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* GPX (primary coordinates)
* GPX (secondary coordinates)

## Current listings

| | Name on the Register | Image | Date listed | Location | City or town | Description |
| 1 | Adgate Block | Adgate Block | October 7, 1982 (#82001347) | 300-306 S. Main St. 40°44′13″N 84°06′20″W﻿ / ﻿40.736944°N 84.105556°W﻿ / 40.736944; -84.105556﻿ (Adgate Block) | Lima | A business block, now demolished and replaced with a YMCA |
| 2 | Allen County Courthouse | Allen County Courthouse More images | July 24, 1974 (#74001392) | Courthouse Sq. 40°44′34″N 84°06′20″W﻿ / ﻿40.742778°N 84.105556°W﻿ / 40.742778; -84.105556﻿ (Allen County Courthouse) | Lima | Large Second Empire-style courthouse |
| 3 | Armory-Latisona Building | Armory-Latisona Building | October 7, 1982 (#82001348) | 440 S. Main St. 40°44′06″N 84°06′19″W﻿ / ﻿40.735°N 84.105278°W﻿ / 40.735; -84.105278﻿ (Armory-Latisona Building) | Lima | An armory, converted for civilian purposes |
| 4 | Barr Hotel | Barr Hotel | May 15, 1986 (#86001053) | 201-209 E. High and 200-218 N. Union Sts. 40°44′16″N 84°06′11″W﻿ / ﻿40.737778°N 84.103056°W﻿ / 40.737778; -84.103056﻿ (Barr Hotel) | Lima | A two-part building from Lima's golden years |
| 5 | Griffith Breese Farm | Griffith Breese Farm | January 11, 1983 (#83001942) | 2875 Fort Amanda Rd., southwest of Lima 40°42′18″N 84°09′20″W﻿ / ﻿40.704889°N 84.155556°W﻿ / 40.704889; -84.155556﻿ (Griffith Breese Farm) | Shawnee Township | An old farmstead, home to one of the area's first settlers |
| 6 | Beck and R.C. Cahill Buildings | Beck and R.C. Cahill Buildings | October 7, 1982 (#82001349) | 200-206 S. Main St. 40°44′19″N 84°06′19″W﻿ / ﻿40.738611°N 84.105278°W﻿ / 40.738611; -84.105278﻿ (Beck and R.C. Cahill Buildings) | Lima | A business block, now demolished and replaced with a parking lot |
| 7 | Dorsey Building | Dorsey Building | October 7, 1982 (#82001350) | 208 S. Main St. 40°44′16″N 84°06′20″W﻿ / ﻿40.737778°N 84.105556°W﻿ / 40.737778; -84.105556﻿ (Dorsey Building) | Lima | An elaborate stone building, now demolished and replaced with a parking lot. |
| 8 | Elks Lodge | Elks Lodge More images | October 7, 1982 (#82001865) | 138 W. North St. 40°44′35″N 84°06′23″W﻿ / ﻿40.743056°N 84.106389°W﻿ / 40.743056; -84.106389﻿ (Elks Lodge) | Lima | Built for an Elks lodge; now a church |
| 9 | First National Bank and Trust Building | First National Bank and Trust Building More images | October 7, 1982 (#82001351) | 43-53 Public Sq. 40°44′24″N 84°06′20″W﻿ / ﻿40.74°N 84.105556°W﻿ / 40.74; -84.105556﻿ (First National Bank and Trust Building) | Lima | One of the tallest downtown buildings, constructed shortly before the end of Lima's golden age |
| 10 | Hotel Argonne | Hotel Argonne More images | October 7, 1982 (#82001352) | 201 N. Elizabeth St. 40°44′29″N 84°06′25″W﻿ / ﻿40.741389°N 84.106944°W﻿ / 40.741389; -84.106944﻿ (Hotel Argonne) | Lima | A ten-story DeCurtins design named for the Meuse-Argonne Offensive |
| 11 | Klaus Block | Klaus Block | October 7, 1982 (#82001864) | 401-405 N. Main St. 40°44′39″N 84°06′19″W﻿ / ﻿40.744167°N 84.105278°W﻿ / 40.744167; -84.105278﻿ (Klaus Block) | Lima | A commercial block; home to the same business since 1870 |
| 12 | Lima Cleaning and Pressing Company | Lima Cleaning and Pressing Company | October 7, 1982 (#82001353) | 436-438 S. Main St. 40°44′07″N 84°06′19″W﻿ / ﻿40.735278°N 84.105278°W﻿ / 40.735278; -84.105278﻿ (Lima Cleaning and Pressing Company) | Lima | A former laundry building; one of the few historic properties in a decaying neighborhood |
| 13 | Lima Memorial Hall | Lima Memorial Hall More images | May 7, 1979 (#79001779) | W. Elm and S. Elizabeth Sts. 40°44′15″N 84°06′23″W﻿ / ﻿40.7375°N 84.106389°W﻿ / 40.7375; -84.106389﻿ (Lima Memorial Hall) | Lima | Community center and performance hall |
| 14 | Lima Pennsylvania Railroad Passenger Depot | Lima Pennsylvania Railroad Passenger Depot More images | August 21, 2003 (#03000805) | 424 N. Central Ave. 40°44′42″N 84°06′07″W﻿ / ﻿40.745°N 84.101944°W﻿ / 40.745; -84.101944﻿ (Lima Pennsylvania Railroad Passenger Depot) | Lima | A Pennsylvania Railroad station, now used by the city government |
| 15 | Lima Stadium | Lima Stadium | March 21, 2002 (#02000219) | 100 S. Calument Ave. and E. Market St. 40°44′23″N 84°05′32″W﻿ / ﻿40.739722°N 84.092222°W﻿ / 40.739722; -84.092222﻿ (Lima Stadium) | Lima | Football stadium for Lima Senior High School |
| 16 | Linneman Building | Linneman Building | October 7, 1982 (#82001867) | 210-212 S. Main St. 40°44′15″N 84°06′20″W﻿ / ﻿40.7375°N 84.105556°W﻿ / 40.7375; -84.105556﻿ (Linneman Building) | Lima | A business block, now demolished and replaced with a parking lot |
| 17 | MacDonell House | MacDonell House More images | September 20, 1978 (#78001999) | 632 W. Market St. 40°44′25″N 84°06′58″W﻿ / ﻿40.740278°N 84.116111°W﻿ / 40.740278; -84.116111﻿ (MacDonell House) | Lima | Home to the Allen County Museum |
| 18 | Marks-Family House | Marks-Family House | April 1, 1982 (#82003537) | 233 N. Franklin St. 40°50′39″N 84°20′14″W﻿ / ﻿40.844167°N 84.337222°W﻿ / 40.844167; -84.337222﻿ (Marks-Family House) | Delphos | A well-preserved Queen Anne residence |
| 19 | Martin Block and Kibby Block | Martin Block and Kibby Block More images | October 7, 1982 (#82001868) | 140-146 S. Main St. 40°44′19″N 84°06′19″W﻿ / ﻿40.738611°N 84.105278°W﻿ / 40.738611; -84.105278﻿ (Martin Block and Kibby Block) | Lima | A pair of Gothic Revival commercial buildings |
| 20 | Metropolitan Block | Metropolitan Block More images | November 29, 1979 (#79001780) | 300 N. Main St. 40°44′34″N 84°06′16″W﻿ / ﻿40.742778°N 84.104444°W﻿ / 40.742778; -84.104444﻿ (Metropolitan Block) | Lima | A turreted Romanesque Revival commercial building |
| 21 | Miami and Erie Canal Deep Cut | Miami and Erie Canal Deep Cut More images | October 15, 1966 (#66000603) | 2 mi (3.2 km) south of Spencerville on State Route 66 40°41′06″N 84°21′57″W﻿ / ﻿40.68497°N 84.36575°W﻿ / 40.68497; -84.36575﻿ (Miami and Erie Canal Deep Cut) | Spencer Township | A portion of the Miami and Erie Canal; workers dug fifty feet into a hillside instead of building locks over it. Extends into Salem Township in Auglaize County |
| 22 | Neal Clothing | Neal Clothing | October 7, 1982 (#82001870) | 74 Public Sq. 40°44′26″N 84°06′17″W﻿ / ﻿40.7406°N 84.1047°W﻿ / 40.7406; -84.1047﻿ (Neal Clothing) | Lima | The oldest building on Public Square |
| 23 | Neely-Sieber House | Neely-Sieber House More images | December 12, 1976 (#76001360) | 620 W. Spring St. 40°44′19″N 84°06′52″W﻿ / ﻿40.7386°N 84.1144°W﻿ / 40.7386; -84.1144﻿ (Neely-Sieber House) | Lima | Built for an oil baron and longtime home of a local businessman |
| 24 | Ohio Theatre | Ohio Theatre More images | October 7, 1982 (#82001866) | 122 W. North St. 40°44′34″N 84°06′22″W﻿ / ﻿40.7428°N 84.1061°W﻿ / 40.7428; -84.1061﻿ (Ohio Theatre) | Lima | 1920s Movie palace in the Churrigueresque style |
| 25 | Renz Block | Renz Block | October 7, 1982 (#82001354) | 320 N. Main St. 40°44′36″N 84°06′18″W﻿ / ﻿40.7433°N 84.105°W﻿ / 40.7433; -84.105﻿ (Renz Block) | Lima | A business block, now demolished and replaced with a parking lot |
| 26 | Round Barn | Round Barn More images | April 17, 1980 (#80002934) | Along East Rd., south of Elida 40°46′26″N 84°11′25″W﻿ / ﻿40.7739°N 84.1903°W﻿ / 40.7739; -84.1903﻿ (Round Barn) | American Township | |
| 27 | St. John Catholic Church | St. John Catholic Church More images | January 3, 1980 (#80002933) | 110 N. Franklin St. 40°50′35″N 84°20′10″W﻿ / ﻿40.8431°N 84.3361°W﻿ / 40.8431; -84.3361﻿ (St. John Catholic Church) | Delphos | Large Romanesque Revival church built for a wealthy, largely German parish |
| 28 | The J.M. Sealts Company Warehouse Building | Upload image | March 1, 2021 (#100006179) | 330 North Central Ave. 40°44′35″N 84°06′08″W﻿ / ﻿40.7430°N 84.1021°W﻿ / 40.7430; -84.1021﻿ (The J.M. Sealts Company Warehouse Building) | Lima | |
| 29 | U.S. Post Office | U.S. Post Office More images | October 7, 1982 (#82001356) | 326 W. High St. 40°44′29″N 84°06′32″W﻿ / ﻿40.7414°N 84.1089°W﻿ / 40.7414; -84.1089﻿ (U.S. Post Office) | Lima | Neoclassical post office constructed at the beginning of the Great Depression |
| 30 | Union Block | Union Block More images | October 7, 1982 (#82001355) | 28-38 Public Sq. 40°44′23″N 84°06′17″W﻿ / ﻿40.7397°N 84.1047°W﻿ / 40.7397; -84.1047﻿ (Union Block) | Lima | Prominent commercial block on Public Square |
| 31 | West Market Street Boulevard Historic District | West Market Street Boulevard Historic District | October 27, 2004 (#04001201) | 1410-1529 W. Market St. 40°44′24″N 84°08′04″W﻿ / ﻿40.7400°N 84.1344°W﻿ / 40.7400; -84.1344﻿ (West Market Street Boulevard Historic District) | Lima | |

## Former listings

| | Name on the Register | Image | Date listed | Date removed | Location | City or town | Description |
| 1 | Round Barn | Upload image | April 17, 1980 (#80002932) | May 5, 1983 | Off U.S. Route 30, east of Delphos | Delphos | |
| 2 | Wheeler Building | Wheeler Building | Unavailable (#82001869) | July 12, 1985 | 131-135 W. Market Street 40°44′23″N 84°06′23″W﻿ / ﻿40.7398°N 84.1063°W﻿ / 40.7398; -84.1063﻿ (Wheeler Building) | Lima | |