Sioux County, Iowa Zip Codes

Zip Code	City	Population
51250	Sioux Center	9,667
51041	Orange City	7,016
51201	Sheldon	6,278
51247	Rock Valley	4,887
51023	Hawarden	3,469
51239	Hull	3,115
51003	Alton	1,761
51027	Ireton	1,421
51238	Hospers	1,401
51234	Boyden	1,179
51036	Maurice	676
51244	Matlock	147
51011	Chatsworth	77

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