ZIP Code 62258

62258 is one of Illinois's ZIP codes, delivering to addresses in Mascoutah, St. Clair County.

City: Mascoutah
County: St. Clair County
State: Illinois
Prefix: 622xx

Where this code sits

62258 is part of the 622xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Mascoutah.

Mascoutah Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 62258 delivers to without sharing its boundary.

ZIP codes nearest 62258

The ZIP codes whose reference points sit closest to 62258.
ZIP code	Distance	Delivers to
ZIP code 62266	5.8 mi	New Memphis, IL
ZIP code 62225	6.1 mi	Scott Air Force Base, IL
ZIP code 62265	6.5 mi	New Baden, IL
ZIP code 62243	8.4 mi	Freeburg, IL
ZIP code 62282	8.7 mi	Saint Libory, IL
ZIP code 62289	8.7 mi	Summerfield, IL
ZIP code 62269	8.9 mi	O Fallon, IL
ZIP code 62254	9.1 mi	Lebanon, 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 62258, plotted from its record coordinates.

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

Scope ZIP code 62258. 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.