| Property | Address | City | Date Listed |
|---|---|---|---|
| Cedar Valley Seminary | N. 6th and Mechanic Sts. | Osage | 11/17/1977 |
| Deering, Nathaniel Cobb and Lucetia Baily, House | 903 State Street | Osage | 1/26/2001 |
| First Lutheran Church | 212 N. Main Street | St. Ansgar | 12/12/1976 |
| Mitchell County Courthouse | 500 State Street | Osage | 08/29/1977 |
| Mitchell Powerhouse and Dam | Red Cedar River | Mitchell | 12/08/1978 |
| Osage Commercial Historic District | Main Street Blks. 700, 600 and parts of 500 | Osage | 9/12/2002 |
| Otranto Bridge | 480th Ave. over Big Cedar River Street | Ansgar vicinity | 5/15/98 |
| Severson Nels Barn | N of Carpenter | Carpenter | 07/15/1977 |
| Union Presbyterian Church | NW of Stacyville | Stacyville | 04/13/1977 |
| Walnut Grove School | 3272 Foothill Ave. | Osage vicinity | 9/12/2002 |