# National Register of Historic Places listings in Washington County, Iowa

This is a list of the National Register of Historic Places listings in Washington County, Iowa.
This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Washington County, Iowa, United States. Latitude and longitude coordinates are provided for many National Register properties and districts; these locations may be seen together in a map.
There are 19 properties and districts listed on the National Register in the county. Another 3 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:
* 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 | H.A. Baxter Coal Company Historic District | H.A. Baxter Coal Company Historic District | June 15, 2015 (#15000343) | 601 E. 3rd St. 41°18′04″N 91°41′08″W﻿ / ﻿41.301073°N 91.685438°W﻿ / 41.301073; -91.685438﻿ (H.A. Baxter Coal Company Historic District) | Washington | |
| 2 | Blair House | Blair House | June 4, 1973 (#73000741) | E. Washington St. and S. 2nd Ave. 41°17′53″N 91°41′23″W﻿ / ﻿41.298056°N 91.689722°W﻿ / 41.298056; -91.689722﻿ (Blair House) | Washington | |
| 3 | Smith Wildman and Jennie (Hearne) Brookhart House | Smith Wildman and Jennie (Hearne) Brookhart House | August 22, 2005 (#05000905) | 1203 E. Washington St. 41°18′00″N 91°40′41″W﻿ / ﻿41.3°N 91.678056°W﻿ / 41.3; -91.678056﻿ (Smith Wildman and Jennie (Hearne) Brookhart House) | Washington | |
| 4 | CM and StP Railroad Underpass | CM and StP Railroad Underpass | May 15, 1998 (#98000469) | County Road G38 over the Soo Railroad line 41°17′36″N 91°43′28″W﻿ / ﻿41.293333°N 91.724444°W﻿ / 41.293333; -91.724444﻿ (CM and StP Railroad Underpass) | Washington | |
| 5 | Jonathan Clark Conger House | Jonathan Clark Conger House | June 28, 1974 (#74000815) | 903 E. Washington St. 41°17′53″N 91°40′54″W﻿ / ﻿41.298056°N 91.681667°W﻿ / 41.298056; -91.681667﻿ (Jonathan Clark Conger House) | Washington | |
| 6 | County Line Bridge | County Line Bridge | May 15, 1998 (#98000513) | 140th block of County Line Rd. over Long Creek 41°16′01″N 91°29′07″W﻿ / ﻿41.266944°N 91.485139°W﻿ / 41.266944; -91.485139﻿ (County Line Bridge) | Columbus Junction | Extends into Louisa County |
| 7 | Gracehill Moravian Church and Cemetery | Gracehill Moravian Church and Cemetery | August 12, 1977 (#77000563) | Southwest of Washington on Iowa Highway 314 41°15′47″N 91°49′47″W﻿ / ﻿41.263056°N 91.829722°W﻿ / 41.263056; -91.829722﻿ (Gracehill Moravian Church and Cemetery) | Washington | |
| 8 | Joseph Keck House | Joseph Keck House | November 28, 1978 (#78001268) | 504 W. Washington St. 41°17′56″N 91°41′48″W﻿ / ﻿41.298889°N 91.696667°W﻿ / 41.298889; -91.696667﻿ (Joseph Keck House) | Washington | |
| 9 | Kurtz House | Kurtz House | September 22, 1977 (#77000564) | 305 S. Ave., C 41°17′50″N 91°41′44″W﻿ / ﻿41.297222°N 91.695556°W﻿ / 41.297222; -91.695556﻿ (Kurtz House) | Washington | |
| 10 | McCleery Calendar Factory | McCleery Calendar Factory | June 16, 2015 (#15000344) | 632 E. 3rd St. 41°18′05″N 91°41′06″W﻿ / ﻿41.301469°N 91.684875°W﻿ / 41.301469; -91.684875﻿ (McCleery Calendar Factory) | Washington | |
| 11 | Pilotburg Church | Pilotburg Church | May 2, 1996 (#96000517) | 1874 155th St. 41°26′04″N 91°46′36″W﻿ / ﻿41.434444°N 91.776667°W﻿ / 41.434444; -91.776667﻿ (Pilotburg Church) | Wellman | |
| 12 | St. Mary's Parish Church Buildings | St. Mary's Parish Church Buildings More images | July 9, 1979 (#79000946) | St. Mary's and Washburn Sts. 41°29′00″N 91°34′54″W﻿ / ﻿41.483333°N 91.581667°W﻿ / 41.483333; -91.581667﻿ (St. Mary's Parish Church Buildings) | Riverside | |
| 13 | Winfield Smouse House | Winfield Smouse House | January 27, 1983 (#83000409) | 321 S. Iowa Ave. 41°17′43″N 91°34′21″W﻿ / ﻿41.295278°N 91.5725°W﻿ / 41.295278; -91.5725﻿ (Winfield Smouse House) | Washington | |
| 14 | Frank Stewart House | Frank Stewart House | November 16, 1987 (#87002021) | 603 W. Washington St. 41°17′54″N 91°41′51″W﻿ / ﻿41.298333°N 91.6975°W﻿ / 41.298333; -91.6975﻿ (Frank Stewart House) | Washington | |
| 15 | Washington County Courthouse | Washington County Courthouse More images | July 2, 1981 (#81000273) | N. B Ave. 41°11′17″N 91°45′06″W﻿ / ﻿41.188056°N 91.751667°W﻿ / 41.188056; -91.751667﻿ (Washington County Courthouse) | Washington | |
| 16 | Washington Downtown Historic District | Washington Downtown Historic District More images | May 22, 2013 (#13000297) | 11 blocks of Iowa & Marion Aves., Washington, Main & 2nd Sts. 41°17′58″N 91°41′33″W﻿ / ﻿41.299402°N 91.692366°W﻿ / 41.299402; -91.692366﻿ (Washington Downtown Historic District) | Washington | |
| 17 | West Side Residential Historic District | Upload image | September 14, 2018 (#100002919) | Roughly the 300-800 blocks of W Washington Blvd., W Jefferson & W Main Sts. including Sunset Park 41°17′55″N 91°41′48″W﻿ / ﻿41.2985°N 91.6968°W﻿ / 41.2985; -91.6968﻿ (West Side Residential Historic District) | Washington | |
| 18 | Woodlawn Cemetery Gates and Shelter | Woodlawn Cemetery Gates and Shelter | October 4, 2016 (#16000688) | 501 W. Adams 41°17′40″N 91°41′49″W﻿ / ﻿41.294365°N 91.696818°W﻿ / 41.294365; -91.696818﻿ (Woodlawn Cemetery Gates and Shelter) | Washington | |
| 19 | Alexander Young Cabin | Alexander Young Cabin | August 14, 1973 (#73000742) | W. Madison St. between G and H Aves. 41°17′50″N 91°42′07″W﻿ / ﻿41.297222°N 91.701944°W﻿ / 41.297222; -91.701944﻿ (Alexander Young Cabin) | Washington | |

## Former listings

| | Name on the Register | Image | Date listed | Date removed | Location | City or town | Description |
| 1 | Thomas Johnson Polygonal Barn | Upload image | June 30, 1986 (#86001451) | December 19, 2014 | Off Iowa Highway 114 41°26′21″N 91°49′44″W﻿ / ﻿41.439167°N 91.828889°W﻿ / 41.439167; -91.828889﻿ (Thomas Johnson Polygonal Barn) | Wellman | |
| 2 | Rubio Bridge | Upload image | May 15, 1998 (#98000471) | November 11, 2002 | Over Skunk River | Rubio vicinity | Destroyed by fire on September 3, 2002 |
| 3 | Washington County Hospital | Upload image | December 22, 1977 (#77000565) | April 26, 2006 | S. 4th Ave. and Clara Barton | Washington | Demolished in March, 2006. |