Monona County, Iowa Zip Codes

Zip Code	City	Population
51040	Onawa	3,422
51034	Mapleton	1,653
51063	Whiting	1,144
51558	Moorhead	724
51060	Ute	557
51572	Soldier	464
51010	Castana	411
51523	Blencoe	370
51051	Rodney	62

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