ZIP Code 60543

60543 is one of Illinois's ZIP codes, delivering to addresses in Oswego, Kendall County.

City: Oswego
County: Kendall County
State: Illinois
Prefix: 605xx

Where this code sits

60543 is part of the 605xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Oswego.

Oswego Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 60543 delivers to without sharing its boundary.

ZIP codes nearest 60543

The ZIP codes whose reference points sit closest to 60543.
ZIP code	Distance	Delivers to
ZIP code 60538	2.4 mi	Montgomery, IL
ZIP code 60512	5.0 mi	Bristol, IL
ZIP code 60503	5.3 mi	Aurora, IL
ZIP code 60572	5.4 mi	Aurora, IL
ZIP code 60507	5.4 mi	Aurora, IL
ZIP code 60568	5.4 mi	Aurora, IL
ZIP code 60506	5.6 mi	Aurora, IL
ZIP code 60505	5.6 mi	Aurora, 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 60543, plotted from its record coordinates.

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

Scope ZIP code 60543. 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.