ZIP Code 62203

62203 is one of Illinois's ZIP codes, delivering to addresses in East Saint Louis, St. Clair County.

City: East Saint Louis
County: St. Clair County
State: Illinois
Prefix: 622xx

Where this code sits

62203 is part of the 622xx range, the group of codes handled by one mail processing centre. East Saint Louis is served by 7 ZIP codes in total.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 62203 delivers to without sharing its boundary.

ZIP codes nearest 62203

The ZIP codes whose reference points sit closest to 62203.
ZIP code	Distance	Delivers to
ZIP code 62204	2.5 mi	East Saint Louis, IL
ZIP code 62207	3.0 mi	East Saint Louis, IL
ZIP code 62205	3.1 mi	East Saint Louis, IL
ZIP code 62208	3.6 mi	Fairview Heights, IL
ZIP code 62232	4.1 mi	Caseyville, IL
ZIP code 62223	4.2 mi	Belleville, IL
ZIP code 62201	4.6 mi	East Saint Louis, IL
ZIP code 62202	4.7 mi	East Saint Louis, IL

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 62203, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 62203. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.