There are 9 zip codes in Williams County, North Dakota. The most populated is 58801, located in Williston. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
5880133,579Williston
588521,973Tioga
588491,171Ray
58843951Epping
58845582Grenora
58853494Trenton
58755206Mcgregor
58830154Alamo
5885670Zahl

Zip Codes in Williams County, North Dakota by Population (2024)