ZIP Code 61730

61730 is one of Illinois's ZIP codes, delivering to addresses in Cooksville, McLean County.

City: Cooksville
County: McLean County
State: Illinois
Prefix: 617xx

Where this code sits

61730 is part of the 617xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Cooksville.

Cooksville Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61730 delivers to without sharing its boundary.

ZIP codes nearest 61730

The ZIP codes whose reference points sit closest to 61730.
ZIP code	Distance	Delivers to
ZIP code 61758	5.0 mi	Merna, IL
ZIP code 61737	6.4 mi	Ellsworth, IL
ZIP code 61728	6.5 mi	Colfax, IL
ZIP code 61702	6.9 mi	Bloomington, IL
ZIP code 61791	6.9 mi	Bloomington, IL
ZIP code 61753	7.8 mi	Lexington, IL
ZIP code 61776	8.2 mi	Towanda, IL
ZIP code 61722	10 mi	Arrowsmith, 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 61730, plotted from its record coordinates.

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

Scope ZIP code 61730. 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.