Summit County, Colorado ZIP Codes

4 ZIP Codes

Zip Code
City
Population ↓
80424Breckenridge9,764
80498Silverthorne8,881
80435Dillon8,715
80443Frisco3,992

Overview of ZIP Codes in Summit 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 Summit County, Colorado (US Census).

Sources

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

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