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

This is a list of the National Register of Historic Places listings in Putnam County, Ohio.
This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Putnam 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 10 properties and districts listed on the National Register in the county.
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 | Bridenbaugh District No. 3 Schoolhouse | Bridenbaugh District No. 3 Schoolhouse More images | April 28, 2005 (#05000343) | Junction of County Road 6 and Township Road M6, north of Pandora 41°58′40″N 83°58′37″W﻿ / ﻿41.977778°N 83.976944°W﻿ / 41.977778; -83.976944﻿ (Bridenbaugh District No. 3 Schoolhouse) | Riley Township | |
| 2 | Columbus Grove Municipal Pool | Columbus Grove Municipal Pool | May 30, 1997 (#97000511) | 47510 Road P, northeast of Columbus Grove 40°55′37″N 84°01′31″W﻿ / ﻿40.926944°N 84.025278°W﻿ / 40.926944; -84.025278﻿ (Columbus Grove Municipal Pool) | Pleasant Township | |
| 3 | John Edwards House | John Edwards House | November 27, 1978 (#78002177) | 305 W. Main St. 41°06′05″N 83°59′27″W﻿ / ﻿41.101389°N 83.990833°W﻿ / 41.101389; -83.990833﻿ (John Edwards House) | Leipsic | |
| 4 | Gilboa Main Street Historic District | Gilboa Main Street Historic District | February 27, 1979 (#79001927) | Main St. 41°00′59″N 83°55′21″W﻿ / ﻿41.016389°N 83.9225°W﻿ / 41.016389; -83.9225﻿ (Gilboa Main Street Historic District) | Gilboa | |
| 5 | Dr. H. Huber Block | Dr. H. Huber Block | June 4, 1980 (#80003213) | Main St. and Taft Ave. 41°01′09″N 84°02′52″W﻿ / ﻿41.019167°N 84.047778°W﻿ / 41.019167; -84.047778﻿ (Dr. H. Huber Block) | Ottawa | |
| 6 | Leipsic City Hall | Upload image | June 20, 1979 (#79001928) | Belmore St. 41°05′52″N 83°59′06″W﻿ / ﻿41.097889°N 83.985°W﻿ / 41.097889; -83.985﻿ (Leipsic City Hall) | Leipsic | Destroyed |
| 7 | Ottawa Waterworks Building | Ottawa Waterworks Building More images | September 13, 1976 (#76001519) | 1035 E. 3rd St. 41°01′17″N 84°02′12″W﻿ / ﻿41.021389°N 84.036667°W﻿ / 41.021389; -84.036667﻿ (Ottawa Waterworks Building) | Ottawa | |
| 8 | Putnam County Courthouse | Putnam County Courthouse More images | May 3, 1974 (#74001608) | Courthouse Sq. 41°01′11″N 84°02′47″W﻿ / ﻿41.019722°N 84.046389°W﻿ / 41.019722; -84.046389﻿ (Putnam County Courthouse) | Ottawa | |
| 9 | Round Barn | Upload image | April 17, 1980 (#80003212) | Road 17N south of Kalida 40°57′00″N 84°11′38″W﻿ / ﻿40.95°N 84.193889°W﻿ / 40.95; -84.193889﻿ (Round Barn) | Union Township | Destroyed |
| 10 | St. John the Baptist Roman Catholic Church | St. John the Baptist Roman Catholic Church More images | June 17, 1977 (#77001083) | State Route 694 and Main St. 41°01′50″N 84°04′46″W﻿ / ﻿41.030556°N 84.079444°W﻿ / 41.030556; -84.079444﻿ (St. John the Baptist Roman Catholic Church) | Glandorf | |