Madison County, Montana ZIP Codes

12 ZIP Codes

Zip Code
City
Population ↓
59729Ennis3,258
59749Sheridan2,029
59716Big Sky1,795
59754Twin Bridges980
59735Harrison440
59740McAllister428
59710Alder226
59720Cameron220
59751Silver Star215
59755Virginia City170
59747Pony122
59745Norris98

Overview of ZIP Codes in Madison 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.
12
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 12 ZCTAs in Madison County, Montana (US Census).

Sources

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

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