Williams County, North Dakota ZIP Codes

Zip Code
City
Population ↓
58801Williston34,277
58852Tioga2,087
58849Ray1,101
58843Epping676
58845Grenora584
58853Trenton354
58856Zahl211
58755Mcgregor133
58830Alamo66

Overview of ZIP Codes in Williams 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 Williams County, North Dakota (US Census).

Sources

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

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