ZIP Code 61537

61537 is one of Illinois's ZIP codes, delivering to addresses in Henry, Marshall County.

City: Henry
County: Marshall County
State: Illinois
Prefix: 615xx

Where this code sits

61537 is part of the 615xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Henry.

Henry Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61537 delivers to without sharing its boundary.

ZIP codes nearest 61537

The ZIP codes whose reference points sit closest to 61537.
ZIP code	Distance	Delivers to
ZIP code 61540	6.4 mi	Lacon, IL
ZIP code 61560	6.7 mi	Putnam, IL
ZIP code 61336	7.7 mi	Magnolia, IL
ZIP code 61565	8.0 mi	Sparland, IL
ZIP code 61375	8.5 mi	Varna, IL
ZIP code 61327	9.0 mi	Hennepin, IL
ZIP code 61335	9.1 mi	Mc Nabb, IL
ZIP code 61541	12 mi	La Rose, 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 61537, plotted from its record coordinates.

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

Scope ZIP code 61537. 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.