Allamakee County, Iowa ZIP Codes

8 ZIP Codes

Zip Code
City
Population ↓
52172Waukon5,877
52162Postville3,744
52159Monona2,398
52151Lansing1,886
52160New Albin818
52146Harpers Ferry752
52140Dorchester671
52170Waterville555

Overview of ZIP Codes in Allamakee County

ZCTAs are geographic areas created by the US Census Bureau to approximate the delivery areas of ZIP Codes for statistical analysis. While ZCTAs use the same five-digit codes as ZIP Codes, they represent defined geographic areas that may not exactly match the mail delivery routes of ZIP Codes.
8
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 8 ZCTAs in Allamakee County, Iowa (US Census).

Sources

  1. US Census: 2025 Gazetteer Files
  2. US Census: ZIP Code Tabulation Areas (ZCTAs)

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