Iowa County, Iowa ZIP Codes

12 ZIP Codes

Zip Code
City
Population ↓
52361Williamsburg4,582
52301Marengo4,028
52203Amana2,231
52316North English1,597
52347Victor1,386
52236Homestead564
52251Ladora544
52325Parnell477
52220Conroy199
52334South Amana181
52308Millersburg129
52307Middle Amana63

Overview of ZIP Codes in Iowa 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.
12
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 12 ZCTAs in Iowa County, Iowa (US Census).

Sources

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

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