| Property | Address | City | Date Listed |
|---|---|---|---|
| Decatur County Courthouse | 9th Street | Leon | 07/02/1981 |
| Grand River Bridge | County road over Grand River | Leon vicinity | 6/25/98 |
| Liberty Hall | Main Street | Lamoni | 09/29/1983 |
| McClung J. J. House | Jct. of Main and Vine Sts. | Garden Grove | 12/06/1990 |
| Missouri Iowa & Nebraska Railway Co. Depot | Weldon N. Main Street at Decatur County line | Weldon | 12/13/1991 |
| Stearns C. S. House | Main Street | Garden Grove | 11/28/1978 |
| Union Church | Clark at Sycamore Street | Davis City | 12/12/1976 |