ZIP Code 61042

61042 is one of Illinois's ZIP codes, delivering to addresses in Harmon, Lee County.

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

Where this code sits

61042 is part of the 610xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Harmon.

Harmon Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61042 delivers to without sharing its boundary.

ZIP codes nearest 61042

The ZIP codes whose reference points sit closest to 61042.
ZIP code	Distance	Delivers to
ZIP code 61071	7.9 mi	Rock Falls, IL
ZIP code 61243	8.0 mi	Deer Grove, IL
ZIP code 61324	9.6 mi	Eldena, IL
ZIP code 61081	10 mi	Sterling, IL
ZIP code 61376	11 mi	Walnut, IL
ZIP code 61021	11 mi	Dixon, IL
ZIP code 61310	12 mi	Amboy, IL
ZIP code 61037	12 mi	Galt, 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 61042, plotted from its record coordinates.

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

Scope ZIP code 61042. 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.