St. Clair
Illinois
28
Total ZIPs
269,095
Total Population
ZIP Codes in St. Clair
| ZIP Code | City | Population | Density |
|---|---|---|---|
| 62269 | O Fallon | 31,348 | 448 |
| 62226 | Belleville | 29,744 | 824 |
| 62221 | Belleville | 27,858 | 313 |
| 62220 | Belleville | 20,504 | 270 |
| 62223 | Belleville | 17,560 | 268 |
| 62208 | Fairview Heights | 17,376 | 501 |
| 62206 | East Saint Louis | 16,509 | 455 |
| 62205 | East Saint Louis | 9,329 | 714 |
| 62258 | Mascoutah | 9,199 | 48 |
| 62207 | East Saint Louis | 8,750 | 506 |
| 62203 | East Saint Louis | 8,209 | 477 |
| 62204 | East Saint Louis | 7,960 | 549 |
| 62201 | East Saint Louis | 7,547 | 193 |
| 62260 | Millstadt | 7,290 | 59 |
| 62232 | Caseyville | 7,260 | 213 |
| 62254 | Lebanon | 6,089 | 62 |
| 62243 | Freeburg | 5,910 | 43 |
| 62225 | Scott Air Force Base | 5,381 | 293 |
| 62239 | Dupo | 4,954 | 243 |
| 62293 | Trenton | 4,748 | 31 |
| 62285 | Smithton | 4,484 | 106 |
| 62264 | New Athens | 3,338 | 20 |
| 62257 | Marissa | 3,214 | 17 |
| 62240 | East Carondelet | 1,966 | 47 |
| 62255 | Lenzburg | 1,001 | 15 |
| 62059 | Lovejoy | 746 | 1,088 |
| 62282 | Saint Libory | 471 | 179 |
| 62289 | Summerfield | 350 | 655 |
All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.