ZIP Code 61057

61057 is one of Illinois's ZIP codes, delivering to addresses in Nachusa, Lee County.

City: Nachusa
County: Lee County
State: Illinois
Prefix: 610xx

Where this code sits

61057 is part of the 610xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Nachusa.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61057 delivers to without sharing its boundary.

ZIP codes nearest 61057

The ZIP codes whose reference points sit closest to 61057.
ZIP code	Distance	Delivers to
ZIP code 61031	4.2 mi	Franklin Grove, IL
ZIP code 61324	4.3 mi	Eldena, IL
ZIP code 61021	5.3 mi	Dixon, IL
ZIP code 61331	7.9 mi	Lee Center, IL
ZIP code 61310	9.1 mi	Amboy, IL
ZIP code 61091	9.2 mi	Woosung, IL
ZIP code 61006	9.6 mi	Ashton, IL
ZIP code 61378	12 mi	West Brooklyn, 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 61057, plotted from its record coordinates.

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

Scope ZIP code 61057. 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.