ZIP Code 61531

61531 is one of Illinois's ZIP codes, delivering to addresses in Farmington, Fulton County.

City: Farmington
County: Fulton County
State: Illinois
Prefix: 615xx

Where this code sits

61531 is part of the 615xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Farmington.

Farmington Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61531 delivers to without sharing its boundary.

ZIP codes nearest 61531

The ZIP codes whose reference points sit closest to 61531.
ZIP code	Distance	Delivers to
ZIP code 61553	4.0 mi	Norris, IL
ZIP code 61569	6.4 mi	Trivoli, IL
ZIP code 61572	7.2 mi	Yates City, IL
ZIP code 61432	7.3 mi	Fairview, IL
ZIP code 61529	8.3 mi	Elmwood, IL
ZIP code 61520	8.5 mi	Canton, IL
ZIP code 61458	11 mi	Maquon, IL
ZIP code 61433	11 mi	Fiatt, 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 61531, plotted from its record coordinates.

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

Scope ZIP code 61531. 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.