ZIP Code 61081

61081 is one of Illinois's ZIP codes, delivering to addresses in Sterling, Whiteside County.

City: Sterling
County: Whiteside County
State: Illinois
Prefix: 610xx

Where this code sits

61081 is part of the 610xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Sterling.

Sterling Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61081 delivers to without sharing its boundary.

ZIP codes nearest 61081

The ZIP codes whose reference points sit closest to 61081.
ZIP code	Distance	Delivers to
ZIP code 61071	2.8 mi	Rock Falls, IL
ZIP code 61037	3.2 mi	Galt, IL
ZIP code 61042	10 mi	Harmon, IL
ZIP code 61091	11 mi	Woosung, IL
ZIP code 61021	12 mi	Dixon, IL
ZIP code 61283	12 mi	Tampico, IL
ZIP code 61051	12 mi	Milledgeville, IL
ZIP code 61243	12 mi	Deer Grove, 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 61081, plotted from its record coordinates.

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

Scope ZIP code 61081. 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.