| Property | Address | City | Date Listed |
|---|---|---|---|
| Ames Creek Bridge | 300th Street over Ames Creek | De Witt vicinity | 06/25/1998 |
| Ankeny Building | 201 Fifth Ave. S | Clinton | 03/02/2006 |
| Anthony Horace House | 1206 Anthony Pl. | Camache | 05/01/1991 |
| Castle Terrace Historic District | Roughly along jct. of Terrace Dr. and Caroline Ave. | Clinton | 1/07/1998 |
| Cherry Bank | 1458 Main Ave. | Clinton vicinity | 11/22/99 |
| Chicago Milwaukee St. Paul & Pacific Depot | W of Main Street between Railroad Street and Clinton Ave. | Delmar | 04/14/1997 |
| City Hotel | 214 S Main St. | Wheatland | 10/03/07 |
| Clinton County Courthouse | Between 6th and 7th Aves. | Clinton | 07/02/1981 |
| Clinton Public Library | 306 8th Ave | S. Clinton | 05/23/1983 |
| Curtis George M. House | 420 S. 5th Ave. | Clinton | 10/01/1979 |
| Delmar Calaboose | Vane Street | Delmar | 03/19/1981 |
| Dierks Peter House | IA 136 5 mi. W of Clinton | Clinton vicinity | 12/30/1998 |
| Dugan's Saloon | 516 Smith Street | Grand Mound | 8/30/2001 |
| Farmers and Merchants Savings Bank | 601 Smith Street | Grand Mound | 8/30/2001 |
| First National Bank | 226 Fifth Ave. | S Clinton | 10/10/1985 |
| Grand Mound Town Hall and Waterworks Historic District | 613-615 Clinton Street | Grand Mound | 8/30/2001 |
| Helvig--Olson Farm Historic District | 2008 260th Street | Grand Mound | 8/15/2000 |
| Howes Building | 419-425 Second Street South | Clinton | 12/15/2004 |
| Johnson, George, House | 2566 190th Avenue | Calamus | 8/15/2000 |
| Kvindherred Lutheran Church, School and Cemetery | 2589 190th Avenue | Calamus vicinity | 8/15/2000 |
| Lamb Lafayette House | 317 7th Ave. S. | Clinton | 10/18/1979 |
| Moeszinger--Marquis Hardware Co. | 721 Second St. S | Clinton | 02/09/06 |
| Saint Irenaeus Church | 2811 N. 2nd Street | Clinton | 09/03/2010 |
| Sharon Methodist Episcopal Church | 1223 125th Street | Lost Nation vicinity | 8/14/2003 |
| Van Allen Store | 5th Ave. and S. 2nd Street | Clinton | 01/07/1976 |
| Wilson District #7 School | 1507 270th Avenue | Delmar | 12/06/2004 |