Towns
| State | City/Town | Town Title |
|---|---|---|
| Illinois | Ridgway | Ridgway, IL |
| Illinois | Ridott | Ridott, IL |
| Illinois | Rinard | Rinard, IL |
| Illinois | Ringwood | Ringwood, IL |
| Illinois | Rio | Rio, IL |
| Illinois | Risk | Risk, IL |
| Illinois | River Forest | River Forest, IL |
| Illinois | River Grove | River Grove, IL |
| Illinois | Riverdale | Riverdale, IL |
| Illinois | Riverside | Riverside, IL |
| Illinois | Riverton | Riverton, IL |
| Illinois | Roanoke | Roanoke, IL |
| Illinois | Robbins | Robbins, IL |
| Illinois | Roberts | Roberts, IL |
| Illinois | Robinson | Robinson, IL |
| Illinois | Rochelle | Rochelle, IL |
| Illinois | Rochester | Rochester, IL |
| Illinois | Rock City | Rock City, IL |
| Illinois | Rock Falls | Rock Falls, IL |
| Illinois | Rock Island | Rock Island, IL |
| Illinois | Rockbridge | Rockbridge, IL |
| Illinois | Rockford | Rockford, IL |
| Illinois | Rockport | Rockport, IL |
| Illinois | Rockton | Rockton, IL |
| Illinois | Rockwood | Rockwood, IL |