ZIP Code 61091

61091 is one of Illinois's ZIP codes, delivering to addresses in Woosung, Ogle County.

City: Woosung
County: Ogle County
State: Illinois
Prefix: 610xx

Where this code sits

61091 is part of the 610xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Woosung.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 61091 delivers to without sharing its boundary.

ZIP codes nearest 61091

The ZIP codes whose reference points sit closest to 61091.
ZIP code	Distance	Delivers to
ZIP code 61021	4.7 mi	Dixon, IL
ZIP code 61064	6.6 mi	Polo, IL
ZIP code 61057	9.2 mi	Nachusa, IL
ZIP code 61081	11 mi	Sterling, IL
ZIP code 61324	11 mi	Eldena, IL
ZIP code 61054	11 mi	Mount Morris, IL
ZIP code 61031	12 mi	Franklin Grove, IL
ZIP code 61071	12 mi	Rock Falls, 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 61091, plotted from its record coordinates.

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

Scope ZIP code 61091. 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.