ZIP Code 62921

62921 is one of Illinois's ZIP codes, delivering to addresses in Colp, Williamson County.

City: Colp
County: Williamson County
State: Illinois
Prefix: 629xx

Where this code sits

62921 is part of the 629xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Colp.

Colp Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 62921 delivers to without sharing its boundary.

ZIP codes nearest 62921

The ZIP codes whose reference points sit closest to 62921.
ZIP code	Distance	Delivers to
ZIP code 62918	2.3 mi	Carterville, IL
ZIP code 62915	2.7 mi	Cambria, IL
ZIP code 62948	3.1 mi	Herrin, IL
ZIP code 62933	3.8 mi	Energy, IL
ZIP code 62949	4.0 mi	Hurst, IL
ZIP code 62983	5.4 mi	Royalton, IL
ZIP code 62841	5.9 mi	Freeman Spur, IL
ZIP code 62999	6.7 mi	Zeigler, 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 62921, plotted from its record coordinates.

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

Scope ZIP code 62921. 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.