St. Clair
Source:
Illinois
St. Clair is a major-metro county in Illinois with 28 ZIP codes, 269,095 people, and above-median household income among US counties. All data is sourced from the U.S. Census Bureau American Community Survey (ACS) 2023 5-Year Estimates.
National county placement
According to ACS 5-Year Estimates, St. Clair, IL sits among US counties with an above-median household income, on a major-metro county population base, across a multi-ZIP patchwork.
- Top 37%
- household income vs 3,210 US counties
- 269,095
- combined ZIP population
- 28
- USPS ZIP codes covered
- $73,113
- avg ZIP median income
Income percentile ranks this county's average ZIP median household income against 3,210 US counties with ACS income on at least one ZIP.
St. Clair lands in the national county income distribution as above-median household income on major-metro county footing (FIPS 17163, 28 ZIPs, combined population 269,095). Sort the ZIP table by population before treating the county mean as uniform.
Above-median income across 28 ZIPs means the county average is a compromise. Sort by population, save the largest urban ZIP and one sparse code, then compare - that pair usually shows whether density or income is doing the work inside St. Clair.
Save two ZIPs from the table into your shortlist, then open a compare link - that is the return path a static county summary cannot replace. All figures here come from Census ACS 2023 5-Year Estimates and USPS ZCTA files.
28
Total ZIPs
269,095
Total Population
ZIP Codes in St. Clair
Side-by-side: Compare 62269 vs 62226 →
| 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 |
Frequently Asked Questions
What is the population of St. Clair?
St. Clair has a total population of 269,095 across 28 ZIP codes, based on U.S. Census Bureau ACS 2023 data.
What ZIP codes are in St. Clair?
St. Clair includes 28 ZIP codes: 62269, 62226, 62221, 62220, 62223, 62208, 62206, 62205, 62258, 62207, and more.