Costilla County, Colorado ZIP Codes

Zip Code
City
Population ↓
81151Sanford1,716
81152San Luis1,244
81133Fort Garland1,085
81123Blanca606
81126Chama506
81138Jaroso17

Overview of ZIP Codes in Costilla 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.
6
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 6 ZCTAs in Costilla County, Colorado (US Census).

Sources

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

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