County
St. Clair County, IL
Illinois · Population 253,694 · FIPS: 17163
Population
253,694
Cities
34
ZIP Codes
27
Safety Score
50
50
Average
Loading map…
About St. Clair County
St. Clair County is located in Illinois with a population of 253,694. It includes 34 cities and 27 ZIP codes. The largest cities include Belleville, East Saint Louis, O'Fallon, East St. Louis.
Cities in St. Clair County
| City | Population | Median Home Price | Safety Score |
|---|---|---|---|
| Belleville, IL | 41,370 | N/A | N/A |
| East Saint Louis, IL | 40,843 | N/A | N/A |
| O'Fallon, IL | 32,262 | N/A | N/A |
| East St. Louis, IL | 17,999 | N/A | N/A |
| Cahokia Heights, IL | 17,106 | N/A | N/A |
| Fairview Heights, IL | 16,745 | N/A | N/A |
| Swansea, IL | 14,710 | N/A | N/A |
| Shiloh, IL | 14,572 | N/A | N/A |
| Mascoutah, IL | 8,816 | N/A | N/A |
| Scott Air Force Base, IL | 5,242 | N/A | N/A |
| Freeburg, IL | 4,592 | N/A | N/A |
| Lebanon, IL | 4,474 | N/A | N/A |
| Caseyville, IL | 4,130 | N/A | N/A |
| Millstadt, IL | 4,008 | N/A | N/A |
| Scott AFB, IL | 3,957 | N/A | N/A |
| Dupo, IL | 3,879 | N/A | N/A |
| Smithton, IL | 3,680 | N/A | N/A |
| Fairmont City, IL | 2,492 | N/A | N/A |
| New Athens, IL | 1,933 | N/A | N/A |
| Washington Park, IL | 1,701 | N/A | N/A |
| Marissa, IL | 1,232 | N/A | N/A |
| Brooklyn, IL | 729 | N/A | N/A |
| Lovejoy, IL | 729 | N/A | N/A |
| Saint Libory, IL | 563 | N/A | N/A |
| St. Libory, IL | 559 | N/A | N/A |
| Lenzburg, IL | 428 | N/A | N/A |
| Fayetteville, IL | 357 | N/A | N/A |
| Sauget, IL | 307 | N/A | N/A |
| Summerfield, IL | 248 | N/A | N/A |
| East Carondelet, IL | 233 | N/A | N/A |
Explore Cities in St. Clair County
Belleville, ILPop. 41,370East Saint Louis, ILPop. 40,843O'Fallon, ILPop. 32,262East St. Louis, ILPop. 17,999Cahokia Heights, ILPop. 17,106Fairview Heights, ILPop. 16,745Swansea, ILPop. 14,710Shiloh, ILPop. 14,572Mascoutah, ILPop. 8,816Scott Air Force Base, ILPop. 5,242Freeburg, ILPop. 4,592Lebanon, ILPop. 4,474Caseyville, ILPop. 4,130Millstadt, ILPop. 4,008Scott AFB, ILPop. 3,957Dupo, ILPop. 3,879Smithton, ILPop. 3,680Fairmont City, ILPop. 2,492New Athens, ILPop. 1,933Washington Park, ILPop. 1,701Marissa, ILPop. 1,232Brooklyn, ILPop. 729Lovejoy, ILPop. 729Saint Libory, ILPop. 563St. Libory, ILPop. 559Lenzburg, ILPop. 428Fayetteville, ILPop. 357Sauget, ILPop. 307Summerfield, ILPop. 248East Carondelet, ILPop. 233
ZIP Codes in St. Clair County
62059 - LovejoyPop. 72962201 - East Saint LouisPop. 4,92162203 - East Saint LouisPop. 5,46562204 - East Saint LouisPop. 4,05562205 - East Saint LouisPop. 6,45962206 - East Saint LouisPop. 12,95962207 - East Saint LouisPop. 6,98462208 - Fairview HeightsPop. 16,82162220 - BellevillePop. 19,15262221 - BellevillePop. 29,87562223 - BellevillePop. 16,26962225 - Scott Air Force BasePop. 5,24262226 - BellevillePop. 28,25562232 - CaseyvillePop. 7,06362239 - DupoPop. 4,23262240 - East CarondeletPop. 1,79662243 - FreeburgPop. 6,41862254 - LebanonPop. 6,71062255 - LenzburgPop. 1,09262257 - MarissaPop. 2,046