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.