ZIP Code 52577

52577 is one of Iowa's ZIP codes, delivering to addresses in Oskaloosa, Mahaska County.

City: Oskaloosa
County: Mahaska County
State: Iowa
Prefix: 525xx

Where this code sits

52577 is part of the 525xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Oskaloosa.

Oskaloosa Iowa ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 52577 delivers to without sharing its boundary.

641 Area code 641

ZIP codes nearest 52577

The ZIP codes whose reference points sit closest to 52577.
ZIP code	Distance	Delivers to
ZIP code 52595	1.4 mi	University Park, IA
ZIP code 52534	2.5 mi	Beacon, IA
ZIP code 52543	9.0 mi	Cedar, IA
ZIP code 52586	9.3 mi	Rose Hill, IA
ZIP code 52553	9.8 mi	Eddyville, IA
ZIP code 50143	9.8 mi	Leighton, IA
ZIP code 50207	12 mi	New Sharon, IA
ZIP code 50256	12 mi	Tracy, IA

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 52577, plotted from its record coordinates.

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

Scope ZIP code 52577. 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.