ZIP Code 61439

61439 is one of Illinois's ZIP codes, delivering to addresses in Henderson, Knox County.

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

Where this code sits

61439 is part of the 614xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Henderson.

Henderson Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61439 delivers to without sharing its boundary.

ZIP codes nearest 61439

The ZIP codes whose reference points sit closest to 61439.
ZIP code	Distance	Delivers to
ZIP code 61488	4.5 mi	Wataga, IL
ZIP code 61401	5.3 mi	Galesburg, IL
ZIP code 61402	5.6 mi	Galesburg, IL
ZIP code 61472	6.0 mi	Rio, IL
ZIP code 61430	6.5 mi	East Galesburg, IL
ZIP code 61467	7.3 mi	Oneida, IL
ZIP code 61466	7.9 mi	North Henderson, IL
ZIP code 61448	8.9 mi	Knoxville, 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 61439, plotted from its record coordinates.

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

Scope ZIP code 61439. 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.