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Delaware County, Iowa Zip Codes
Zip Code
City
Population
52057
Manchester
8,082
52040
Dyersville
5,644
52041
Earlville
1,901
52237
Hopkinton
1,623
52223
Delhi
1,162
52330
Ryan
943
52038
Dundee
529
52050
Greeley
433
52036
Delaware
139
Population is the most recent figure from the U.S. Census Bureau's 2022
American Community Survey (ACS) 5-Year Estimates
.