Lyon County, Iowa Zip Codes

Zip Code	City	Population
51246	Rock Rapids	4,007
51241	Larchwood	2,237
51237	George	1,700
51240	Inwood	1,629
51235	Doon	1,012
51243	Little Rock	663
51230	Alvord	578
51242	Lester	343

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