| Property | Address | City | Date Listed |
|---|---|---|---|
| Nodaway River Bridge | Pedestrian path in Pilot Grove County Park | Grant vicinity | 5/15/98 |
| Chautauqua Park | Oak Street | Red Oak. | 05/19/1972 |
| Chicago Burlington Northern and Quincy Depot | 305 S. Second St. | Red Oak | 4/29/99 |
| Grant Commercial Historic District | Parts of Second St. and U Ave. | Grant | 9/12/2002 |
| Hebard Alfred House | 700 8th Street | Red Oak | 04/12/1984 |
| Montgomery County Courthouse | Coolbaugh and 2nd Sts. | Red Oak | 07/02/1981 |
| Montgomery County Jail | 100 W. Coolbaugh Street | Red Oak | 12/18/1992 |
| Moore Josiah B. and Sara House | 508 E. Second Street | Villisca | 12/01/97 |
| Murphy, Thos. D. Co. Factory And Power Plant | 110 S. 2nd St. | Red Oak | 05/19/08 |
| Osborne Edmund B. House | 1020 Boundary Street | Red Oak | 10/30/1997 |
| Red Oak Firehouse and City Jail | 318 E. Washington Ave. | Red Oak | 01/11/06 |
| Red Oak Public Library | 2nd and Washington Sts. | Red Oak | 05/23/1983 |
| Round Barn | Pilot Grove Township CR H20 | Sennett | 06/30/1986 |
| Round Barn | Washington Township US 71 | Sciola | 06/30/1986 |
| Sciola Missionary Baptist Church | US 71 | Sciola | 07/18/1983 |