Caldwell County, Missouri ZIP Codes

Zip Code
City
Population ↓
64644Hamilton2,923
64671Polo1,986
64624Braymer1,489
64649Kidder814
64625Breckenridge738
64650Kingston665
64637Cowgill492

Overview of ZIP Codes in Caldwell 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.
7
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 7 ZCTAs in Caldwell County, Missouri (US Census).

Sources

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

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