ZIP Code 61436

61436 is one of Illinois's ZIP codes, delivering to addresses in Gilson, Knox County.

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

Where this code sits

61436 is part of the 614xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Gilson.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61436 delivers to without sharing its boundary.

ZIP codes nearest 61436

The ZIP codes whose reference points sit closest to 61436.
ZIP code	Distance	Delivers to
ZIP code 61428	5.7 mi	Dahinda, IL
ZIP code 61448	6.3 mi	Knoxville, IL
ZIP code 61458	6.5 mi	Maquon, IL
ZIP code 61430	8.4 mi	East Galesburg, IL
ZIP code 61489	8.5 mi	Williamsfield, IL
ZIP code 61572	9.9 mi	Yates City, IL
ZIP code 61485	11 mi	Victoria, IL
ZIP code 61488	11 mi	Wataga, 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 61436, plotted from its record coordinates.

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

Scope ZIP code 61436. 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.