| Property | Address | City | Date Listed |
|---|---|---|---|
| Allen G. W. S. House | 207 E. Henry Street | Mount Pleasant | 04/11/1985 |
| Ambler Henry House | 405 Broadway | Mt. Pleasant | 04/10/1986 |
| Ball Dr. J. O. and Catherine House | 500 W. Monroe Street | Mt. Pleasant | 05/18/1994 |
| Bangs, John and Lavina House | 2759 Old Highway 24 | New London Vicinity | 8/28/2003 |
| Bicksler Block | 101-103 W Cherry St | Salem | 05/28/2010 |
| Brazelton House | 401 N. Main Street | Mount Pleasant | 01/27/1983 |
| Brazelton House Hotel | 100 N. Main Street | Mt. Pleasant | 09/22/1986 |
| Budde--Singer Building | 110 N. Main | Mount Pleasant | 09/06/1991 |
| City Hall | 220 W. Monroe | Mount Pleasant | 09/06/1991 |
| Collins--Bond House | 402 S Main St | Salem | 10/28/2010 |
| Cook-Johnson House | 3091 Franklin | Salem | 05/28/2010 |
| Cooper George and Margaret House | 400 W. Monroe Street | Mount Pleasant | 05/02/1997 |
| Farmers Savings Bank | 101 S. Main Street | Salem | 05/28/2010 |
| First National Bank | 101 S. Jefferson | Mount Pleasant | 09/06/1991 |
| Fish Creek Bridge | Hickory Rd. over Fish Creek | Salem vicinity | 5/15/98 |
| Geode State Park Civilian Conservation Corps Area | Co. Rd. X23 E of Lowell | Danville | 11/15/1990 |
| Harlan-Lincoln House | 101 W. Broad Street | Mount Pleasant | 05/25/1973 |
| Harlan House Hotel | 122 N. Jefferson Street | Mount Pleasant | 11/16/1987 |
| Henry County Courthouse | Washington Street | Mount Pleasant | 07/02/1981 |
| Henry County Savings Bank | 100 S. Main | Mount Pleasant | 09/06/1991 |
| Holtkamp Round Barn | Off US 218 | Salem | 06/30/1986 |
| Hult Charles E. House Summer Kitchen and Wood Shed | 1904 140th St. | Swedesburg vicinity | 7/15/99 |
| Hultquist John House | 105 Park | Swedesburg | 7/15/99 |
| Lamm-Pollmiller Farmstead District | 1584 335th St | Salem | 05/28/2010 |
| Lewelling Henderson House | W. Main Street | Salem | 06/21/1982 |
| Louisa Building | 120 S. Main | Mount Pleasant | 09/06/1991 |
| Masonic Temple Theater | 115 N. Main | Mount Pleasant | 09/06/1991 |
| Masters Building | 221 W. Monroe | Mount Pleasant | 09/06/1991 |
| McCandless Building | 115 W. Monroe | Mount Pleasant | 09/06/1991 |
| McClellan's General Store | 107 E. Main | New London | 8/28/2003 |
| Mount Pleasant Public Library | 200 N. Main Street | Mount Pleasant | 05/23/1983 |
| National State Bank | 101 W. Monroe | Mount Pleasant | 09/06/1991 |
| Oakland Mills Bridge | Co. Rd. W55 over Skunk River | Oakland Mills State Park | 05/15/98 |
| Old Main | Iowa Wesleyan College campus | Mount Pleasant | 03/26/1973 |
| Peterson Manufacturing Building | 213 W. Main Street | New London | 08/29/1997 |
| Pleasant Lawn School Historic District | Off IA 218 | Mt. Pleasant | 03/25/1987 |
| Red Ball Garage | 1901 140th St. | Swedesburg vicinity | 07/15/99 |
| Reeves, Isaac and Agnes (Bells), House | 209 S. Main St | Salem | 10/28/2010 |
| Smith and Weller Building | 100 E. Main | New London | 08/28/2003 |
| Swedesburg Historic Commercial District | 107 IA 218 | Swedesburg | 07/15/99 |
| Swedish Evangelical Lutheran Church | 1897 140th St. | Swedesburg vicinity | 07/15/99 |
| Timmerman--Burd Building | 118 S. Main | Mount Pleasant | 09/06/1991 |
| Union Block | 109--113 W. Monroe | Mount Pleasant | 09/06/1991 |
| Wilson, Paton and Hannah, House, 1360 280th St, Salem, 10000870, LISTED, 10/28/10 | 1360 280th St | Salem | 10/28/2010 |
| Zuhn Building | 201 E. Monroe | Mount Pleasant | 09/06/1991 |