| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Shabbona | city | Illinois | United States | 41.77 | -88.88 | 898 | |
| Shabbona Grove | city | Illinois | United States | 41.73 | -88.86 | 830 | |
| Shadow Lawn | city | Illinois | United States | 41.16 | -87.57 | 830 | |
| Shady Acres | city | Illinois | United States | 39.85 | -90.55 | 830 | |
| Shady Acres Mobile Home Park | city | Illinois | United States | 41.79 | -90.21 | 830 | |
| Shady Beach | city | Illinois | United States | 41.54 | -90.20 | 830 | |
| Shady Grove | city | Illinois | United States | 37.12 | -88.57 | 331 | |
| Shady Hollow | city | Illinois | United States | 41.60 | -88.01 | 830 | |
| Shafter | city | Illinois | United States | 39.01 | -89.19 | 830 | |
| Shakerag | city | Illinois | United States | 37.82 | -88.91 | 830 | |
| Shale Bluff | city | Illinois | United States | 39.78 | -89.61 | 830 | |
| Shale City | city | Illinois | United States | 41.22 | -90.64 | 830 | |
| Shamrock | city | Illinois | United States | 40.42 | -88.90 | 849 | |
| Shamrock | city | Illinois | United States | 38.89 | -88.19 | 830 | |
| Shanghai City | city | Illinois | United States | 41.05 | -90.50 | 830 | |
| Shannon | city | Illinois | United States | 42.15 | -89.74 | 908 | |
| Shantytown | city | Illinois | United States | 41.89 | -87.62 | 830 | |
| Sharpsburg | city | Illinois | United States | 39.61 | -89.35 | 830 | |
| Shasta (historical) | city | Illinois | United States | 37.13 | -89.40 | 324 | |
| Shattuc | city | Illinois | United States | 38.61 | -89.19 | 830 | |
| Shaw | city | Illinois | United States | 41.05 | -90.64 | 830 | |
| Shawneetown | city | Illinois | United States | 37.71 | -88.19 | 393 | |
| Shaws | city | Illinois | United States | 41.71 | -89.24 | 830 | |
| Sheffield | city | Illinois | United States | 41.36 | -89.74 | 830 | |
| Shelburn (historical) | city | Illinois | United States | 41.70 | -89.35 | 830 | |
| Shelbyville | city | Illinois | United States | 39.41 | -88.79 | 830 | |
| Sheldon | city | Illinois | United States | 40.77 | -87.56 | 830 | |
| Sheldons Grove | city | Illinois | United States | 40.17 | -90.29 | 830 | |
| Shell Lake Estates | city | Illinois | United States | 41.72 | -88.19 | 830 | |
| Shenandoah | city | Illinois | United States | 41.64 | -88.25 | 830 | |
| Shepardson Subdivision | city | Illinois | United States | 42.19 | -89.02 | 830 | |
| Shepherd | city | Illinois | United States | 39.73 | -91.34 | 830 | |
| Sherburnville | city | Illinois | United States | 41.23 | -87.54 | 830 | |
| Sheridan | city | Illinois | United States | 41.53 | -88.68 | 830 | |
| Sheridan Estates | city | Illinois | United States | 39.89 | -91.38 | 830 | |
| Sherman | city | Illinois | United States | 39.89 | -89.60 | 830 | |
| Sherman Corners | city | Illinois | United States | 42.34 | -87.95 | 830 | |
| Shermer Ridge | city | Illinois | United States | 42.13 | -87.82 | 830 | |
| Shermer Square | city | Illinois | United States | 42.13 | -87.82 | 830 | |
| Shermerville | city | Illinois | United States | 42.13 | -87.83 | 830 | |
| Sherrard | city | Illinois | United States | 41.32 | -90.51 | 830 | |
| Sherwood Oaks | city | Illinois | United States | 42.03 | -88.23 | 830 | |
| Shetlerville | city | Illinois | United States | 37.43 | -88.41 | 360 | |
| Shields | city | Illinois | United States | 38.47 | -88.71 | 830 | |
| Shikago | city | Illinois | United States | 41.85 | -87.65 | 830 | |
| Shiloh | city | Illinois | United States | 38.56 | -89.90 | 830 | |
| Shiloh Hill | city | Illinois | United States | 37.93 | -89.62 | 830 | |
| Shiloh Station | city | Illinois | United States | 38.53 | -89.90 | 830 | |
| Shinn | city | Illinois | United States | 39.68 | -91.17 | 830 | |
| Shipman | city | Illinois | United States | 39.12 | -90.04 | 830 | |
| Shirland | city | Illinois | United States | 42.44 | -89.20 | 830 | |
| Shirley | city | Illinois | United States | 38.29 | -88.84 | 830 | |
| Shirley | city | Illinois | United States | 40.41 | -89.06 | 830 | |
| Shobonier | city | Illinois | United States | 38.87 | -89.09 | 830 | |
| Shokokon | city | Illinois | United States | 40.75 | -91.07 | 830 | |
| Shoo Fly | city | Illinois | United States | 40.42 | -90.48 | 830 | |
| Shop Creek | city | Illinois | United States | 39.28 | -89.65 | 830 | |
| Shorewood | city | Illinois | United States | 41.90 | -88.08 | 830 | |
| Shorewood | city | Illinois | United States | 41.52 | -88.20 | 830 | |
| Shorewood Beach | city | Illinois | United States | 41.52 | -88.20 | 830 | |
| Shorewood Park | city | Illinois | United States | 41.52 | -88.20 | 830 | |
| Shumway | city | Illinois | United States | 39.19 | -88.65 | 830 |