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Mahaska County, Iowa Zip Codes
Zip Code
City
Population
52577
Oskaloosa
14,437
50207
New Sharon
2,313
52561
Fremont
1,054
52586
Rose Hill
619
50143
Leighton
546
52595
University Park
539
52534
Beacon
420
52543
Cedar
420
50027
Barnes City
288
Population is the most recent figure from the U.S. Census Bureau's 2022
American Community Survey (ACS) 5-Year Estimates
.