| Property | Address | City | Date Listed |
|---|---|---|---|
| Calhoun County Courthouse | Court and 4th Sts. | Rockwell City | 07/02/1981 |
| Central School | 201 S. Center | Lake City | 01/03/1985 |
| Chicago and North Western Office Building/Passenger Depot | 401 Front Street | Lake City | 08/27/1990 |
| Holdoegel Perry C. and Mattie Forrest House | 504 Eighth Street | Rockwell City | 05/06/1992 |
| Lake City Community Memorial Building | 118 E. Washington Street | Lake City | 08/27/1990 |
| Lake City Public Library | 120 N. Illinois Street | Lake City | 08/27/1990 |
| Lake City Water Standpipe | 100 block of W. Washington Street | Lake City | 08/27/1990 |
| Marsh Rainbow Arch Bridge | Hwy. N37 over North Raccoon River | Lake City | 03/30/1989 |
| Rockwell City Bridge | 270th Street over unnamed stream | Rockwell City | 6/25/98 |
| Smith Farmhouse | Jct. of Rainbow Rd. S. and Monroe Street | Lake City | 08/27/1990 |
| Smith Gen. Cass and Belle House | 500 W. Main Street | Lake City | 08/27/1990 |
| Smith Peter and Mary House | 304 W. Main Street | Lake City | 08/27/1990 |