Washington County, Iowa Zip Codes

Zip Code	City	Population
52353	Washington	8,930
52327	Riverside	3,691
52356	Wellman	2,577
52248	Keota	1,655
52201	Ainsworth	1,508
52621	Crawfordsville	899
52359	West Chester	422

Population is the most recent figure from the U.S. Census Bureau's 2022 American Community Survey (ACS) 5-Year Estimates.