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

This is a list of the National Register of Historic Places listings in Hardin County, Ohio.

It is intended to be a complete list of the properties and districts on the National Register of Historic Places in Hardin 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 a Google map.

There are 7 properties and districts listed on the National Register in the county.

This National Park Service list is complete through NPS recent listings posted July 21, 2023.

## Current listings

| | Name on the Register | Image | Date listed | Location | City or town | Description |
| - | - | - | - | - | - | - |
| 1 | Ada Pennsylvania Station and Railroad Park | Ada Pennsylvania Station and Railroad Park More images | August 7, 1998 (#98001014) | 112 E. Central Ave. 40°46′14″N 83°49′20″W﻿ / ﻿40.770556°N 83.822222°W﻿ / 40.770556; -83.822222﻿ (Ada Pennsylvania Station and Railroad Park) | Ada | Former Pennsylvania Railroad station |
| 2 | Hardin County Courthouse | Hardin County Courthouse More images | March 21, 1979 (#79001863) | Courthouse Sq. 40°38′52″N 83°36′31″W﻿ / ﻿40.647667°N 83.608611°W﻿ / 40.647667; -83.608611﻿ (Hardin County Courthouse) | Kenton | Neoclassical 1913 courthouse |
| 3 | Kenton Courthouse Square Historic District | Kenton Courthouse Square Historic District | August 23, 1984 (#84003722) | Roughly Main, Detroit, Market, Columbus, and Franklin Sts. 40°38′52″N 83°36′31″W﻿ / ﻿40.647667°N 83.608611°W﻿ / 40.647667; -83.608611﻿ (Kenton Courthouse Square Historic District) | Kenton | |
| 4 | Kenton Public Library | Kenton Public Library More images | December 29, 1983 (#83004311) | 121 N. Detroit St. 40°38′54″N 83°36′35″W﻿ / ﻿40.648333°N 83.609722°W﻿ / 40.648333; -83.609722﻿ (Kenton Public Library) | Kenton | A Carnegie library |
| 5 | Mount Victory Historic District | Mount Victory Historic District | April 19, 2001 (#01000390) | Main and Taylor Sts. 40°32′04″N 83°31′15″W﻿ / ﻿40.53433°N 83.52096°W﻿ / 40.53433; -83.52096﻿ (Mount Victory Historic District) | Mount Victory | |
| 6 | North Main-North Detroit Street Historic District | North Main-North Detroit Street Historic District | April 18, 1985 (#85000867) | Roughly Main St. bounded by Marie, Cherry, Carroll, and Detroit Sts. 40°39′06″N 83°36′28″W﻿ / ﻿40.65168°N 83.60776°W﻿ / 40.65168; -83.60776﻿ (North Main-North Detroit Street Historic District) | Kenton | An upscale residential neighborhood with several significant churches |
| 7 | Zimmerman Kame | Zimmerman Kame More images | July 30, 1974 (#74001523) | Off Township Road 39 northeast of Roundhead 40°34′25″N 83°49′10″W﻿ / ﻿40.573500°N 83.819333°W﻿ / 40.573500; -83.819333﻿ (Zimmerman Kame) | McDonald Township | Archaeological site associated with the Glacial Kame culture |
