Cerro Gordo County, Iowa ZIP Codes

9 ZIP Codes

Zip Code
City
Population ↓
50401Mason City28,703
50428Clear Lake9,071
50469Rockwell1,527
50482Ventura748
50464Plymouth694
50479Thornton655
50477Swaledale250
50433Dougherty157
50467Rock Falls63

Overview of ZIP Codes in Cerro Gordo 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.
9
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 9 ZCTAs in Cerro Gordo County, Iowa (US Census).

Sources

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

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