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Poweshiek County, Iowa Zip Codes
Zip Code
City
Population
50112
Grinnell
11,827
52211
Brooklyn
2,638
50171
Montezuma
2,440
52222
Deep River
731
50157
Malcom
705
50242
Searsboro
478
52221
Guernsey
359
52232
Hartwick
306
Population is the most recent figure from the U.S. Census Bureau's 2022
American Community Survey (ACS) 5-Year Estimates
.