Zip Code 62203 — East Saint Louis, IL
62203 is a ZIP Code associated with East Saint Louis, IL, located within St. Clair. The postal region supports an estimated population of 5,465 residents across Data Pending housing units, with a population density of 373.5 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (38.602230, -90.075340)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 62203 |
| Primary City | East Saint Louis |
| State / Province | IL |
| County | St. Clair |
| Total Population | 5,465 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 373.5 people/sq mi |
| Timezone | America/Chicago |
How 62203 Compares
| Metric | ZIP 62203 | St. Clair County | IL State Average |
|---|
| Population | 5,465 | 247,743 | 12,694,745 |
| Median Income | Data Pending | N/A | N/A |
| Population Density | 373.5 /sq mi | -- | -- |
Nearby ZIP Codes
| ZIP Code | City | Distance | Population | Median Income |
|---|
| Zip 62205 | East Saint Louis | 2.1 mi | 6,459 | N/A |
| Zip 62204 | East Saint Louis | 2.3 mi | 4,055 | N/A |
| Zip 62207 | East Saint Louis | 3.0 mi | 6,984 | N/A |
| Zip 62208 | Fairview Heights | 3.8 mi | 16,821 | N/A |
| Zip 62201 | East Saint Louis | 4.3 mi | 4,921 | N/A |
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 →