Castro County, Texas ZIP Codes

4 ZIP Codes

Zip Code
City
Population ↓
79027Dimmitt4,858
79043Hart1,462
79063Nazareth665
79085Summerfield0

Overview of ZIP Codes in Castro 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.
4
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 4 ZCTAs in Castro County, Texas (US Census).

Sources

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

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