ZIP Code 61740

61740 is one of Illinois's ZIP codes, delivering to addresses in Flanagan, Livingston County.

City: Flanagan
County: Livingston County
State: Illinois
Prefix: 617xx

Where this code sits

61740 is part of the 617xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Flanagan.

Flanagan Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61740 delivers to without sharing its boundary.

ZIP codes nearest 61740

The ZIP codes whose reference points sit closest to 61740.
ZIP code	Distance	Delivers to
ZIP code 61743	4.2 mi	Graymont, IL
ZIP code 61321	7.4 mi	Dana, IL
ZIP code 61333	7.7 mi	Long Point, IL
ZIP code 61760	9.1 mi	Minonk, IL
ZIP code 61744	9.4 mi	Gridley, IL
ZIP code 61311	11 mi	Ancona, IL
ZIP code 61319	12 mi	Cornell, IL
ZIP code 61358	12 mi	Rutland, 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 61740, plotted from its record coordinates.

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

Scope ZIP code 61740. 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.