Fergus County, Montana ZIP Codes

9 ZIP Codes

Zip Code
City
Population ↓
59457Lewistown9,135
59464Moore597
59430Denton448
59489Winifred424
59032Grass Range409
59471Roy318
59441Forest Grove126
59451Hilger123
59424Coffee Creek103

Overview of ZIP Codes in Fergus 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.
9
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 9 ZCTAs in Fergus County, Montana (US Census).

Sources

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

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