Zip Code 62257 — Marissa, IL
62257 is a ZIP Code associated with Marissa, IL, located within St. Clair. 62257 ranks #22 out of 27 ZIP codes in St. Clair County by population (and #658 out of 1,396 in IL). The area supports an estimated population of 2,046 residents across Data Pending housing units, with a population density of 9.8 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (38.280480, -89.732620)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 62257 |
| Primary City | Marissa |
| State / Province | IL |
| County | St. Clair |
| Total Population | 2,046 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 9.8 people/sq mi |
| Timezone | America/Chicago |
How 62257 Compares
| Metric | ZIP 62257 | St. Clair County | IL State Average |
|---|
| Population | 2,046 | 247,743 (Total) | 12,694,745 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 9.8 /sq mi | -- | -- |
| County Pop Rank | #22 of 27 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →