ZIP Code 61437

61437 is one of Illinois's ZIP codes, delivering to addresses in Gladstone, Henderson County.

City: Gladstone
County: Henderson County
State: Illinois
Prefix: 614xx

Where this code sits

61437 is part of the 614xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Gladstone.

Gladstone Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61437 delivers to without sharing its boundary.

ZIP codes nearest 61437

The ZIP codes whose reference points sit closest to 61437.
ZIP code	Distance	Delivers to
ZIP code 61425	6.6 mi	Carman, IL
ZIP code 52601	6.7 mi	Burlington, IA
ZIP code 61480	6.9 mi	Stronghurst, IL
ZIP code 61418	7.3 mi	Biggsville, IL
ZIP code 61469	8.1 mi	Oquawka, IL
ZIP code 61460	8.9 mi	Media, IL
ZIP code 52655	9.7 mi	West Burlington, IA
ZIP code 61454	11 mi	Lomax, 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 61437, plotted from its record coordinates.

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

Scope ZIP code 61437. 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.