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Polk County, Minnesota Zip Codes
Zip Code
City
Population
56721
East Grand Forks
10,905
56716
Crookston
9,048
56542
Fosston
2,434
56762
Warren
2,407
56540
Fertile
1,916
56556
Mcintosh
1,303
56535
Erskine
1,242
56723
Fisher
827
56736
Mentor
650
56592
Winger
527
56684
Trail
400
56523
Climax
395
56722
Euclid
357
56646
Gully
328
56517
Beltrami
279
56568
Nielsville
138
Population is the most recent figure from the U.S. Census Bureau's 2022
American Community Survey (ACS) 5-Year Estimates
.