UpAlphabetical listing of Places in Illinois
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Scales Mound | city | Illinois | United States | 42.48 | -90.25 | 951 | |
| Scarboro | city | Illinois | United States | 41.78 | -89.03 | 830 | |
| Schaeferville | city | Illinois | United States | 40.55 | -89.63 | 830 | |
| Schapville | city | Illinois | United States | 42.40 | -90.21 | 830 | |
| Schaufel Corners | city | Illinois | United States | 42.48 | -87.97 | 830 | |
| Schaumburg | city | Illinois | United States | 42.03 | -88.08 | 830 | |
| Scheller | city | Illinois | United States | 38.19 | -89.10 | 830 | |
| Schick | city | Illinois | United States | 41.95 | -88.16 | 830 | |
| Schiller Park | city | Illinois | United States | 41.96 | -87.87 | 830 | |
| Schnell | city | Illinois | United States | 38.64 | -88.25 | 410 | |
| Schnells Corner | city | Illinois | United States | 42.03 | -87.99 | 830 | |
| Schoper | city | Illinois | United States | 39.34 | -89.78 | 830 | |
| Schorsch | city | Illinois | United States | 41.95 | -87.78 | 830 | |
| Schram City | city | Illinois | United States | 39.16 | -89.46 | 830 | |
| Schrodts Station | city | Illinois | United States | 38.38 | -87.83 | 830 | |
| Schrum | city | Illinois | United States | 41.60 | -87.55 | 830 | |
| Schuline | city | Illinois | United States | 38.09 | -89.78 | 830 | |
| Schultz's Subdivision | city | Illinois | United States | 42.12 | -87.86 | 830 | |
| Schwer | city | Illinois | United States | 40.66 | -87.79 | 830 | |
| Sciota | city | Illinois | United States | 40.56 | -90.75 | 830 | |
| Scioto Mills | city | Illinois | United States | 42.36 | -89.67 | 856 | |
| Scottland | city | Illinois | United States | 39.80 | -87.61 | 830 | |
| Scotts | city | Illinois | United States | 39.85 | -87.66 | 830 | |
| Scotts Mill | city | Illinois | United States | 40.08 | -90.71 | 830 | |
| Scottsburg | city | Illinois | United States | 40.55 | -90.59 | 830 | |
| Scottsville | city | Illinois | United States | 38.33 | -88.17 | 830 | |
| Scottville | city | Illinois | United States | 39.48 | -90.10 | 830 | |
| Scovel | city | Illinois | United States | 40.91 | -88.40 | 830 | |
| Scraper-Moecherville | city | Illinois | United States | 41.75 | -88.28 | 830 | |
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