| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Ruark | city | Illinois | United States | 38.59167 | -87.83111 | 495 | 1153 |
| Ruby | city | Illinois | United States | 42.31583 | -89.07083 | 708 | 116849 |
| Rudement | city | Illinois | United States | 37.63639 | -88.49028 | 498 | 1000 |
| Ruffled Feathers Golf Community | city | Illinois | United States | 41.65917 | -87.96 | 698 | 31991 |
| Rugby | city | Illinois | United States | 40.91194 | -88.49028 | 695 | 1325 |
| Ruma | city | Illinois | United States | 38.135 | -89.99778 | 456 | 2936 |
| Rumpler | city | Illinois | United States | 40.11333 | -87.92111 | 685 | 1983 |
| Rural Hill | city | Illinois | United States | 37.96056 | -88.65111 | 498 | 547 |
| Rushville | city | Illinois | United States | 40.12111 | -90.56306 | 662 | 3126 |
| Russell | city | Illinois | United States | 42.49056 | -87.9125 | 698 | 22659 |
| Russellville | city | Illinois | United States | 42.32806 | -88.78361 | 820 | 5012 |
| Russellville | city | Illinois | United States | 38.81889 | -87.53167 | 429 | 1554 |
| Rust | city | Illinois | United States | 38.0025 | -88.76111 | 495 | 1209 |
| Rustic Acres | city | Illinois | United States | 41.50278 | -90.27056 | 649 | 3761 |
| Rutherford | city | Illinois | United States | 40.02472 | -88.0525 | 682 | 1454 |
| Rutland | city | Illinois | United States | 40.98417 | -89.04167 | 705 | 1118 |
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