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Winneshiek County, Iowa Zip Codes
Zip Code
City
Population
52101
Decorah
12,962
52132
Calmar
1,845
52161
Ossian
1,396
52165
Ridgeway
1,094
52144
Fort Atkinson
1,031
52133
Castalia
627
52168
Spillville
350
Population is the most recent figure from the U.S. Census Bureau's 2022
American Community Survey (ACS) 5-Year Estimates
.