| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Slackwater (historical) | city | Illinois | United States | 40.98 | -89.82 | 830 | |
| Sleepy Hollow | city | Illinois | United States | 42.09 | -88.30 | 830 | |
| Sleepy Hollow | city | Illinois | United States | 41.81 | -87.74 | 830 | |
| Sleepy Hollow | city | Illinois | United States | 37.60 | -88.95 | 830 | |
| Sloan | city | Illinois | United States | 38.92 | -90.15 | 830 | |
| Sloan Station | city | Illinois | United States | 39.96 | -88.41 | 830 | |
| Slocum Corners | city | Illinois | United States | 42.47 | -87.97 | 830 |