Illinois - Area of significance: Law
| Allen, Willis, House |
| Benjamin, Ruben M., House |
| City Building |
| Clay County Jail |
| Clover Lawn |
| Cook County Criminal Court Building |
| Franklin County Jail |
| Hossack, John, House |
| Humphrey, John, House |
| Hyde Park-Kenwood Historic District |
| Lincoln Home National Historic Site |
| Macomb Courthouse Square historic District |
| Mercer County Jail |
| Metamora Courthouse |
| Miller-Davis Law Buildings |
| Moore, C. H., House |
| Perry County Jail |
| Williamson County Jail |
Data from United States Park Service and Wikidata
