COUNTY · ND
Williams County, North Dakota
Williams County is a county in North Dakota with FIPS code 38105 and an estimated population of 39,113 (Census 2023), 5th largest of 53 in the state.
County facts
- Name
- Williams County
- State
- North Dakota
- Type
- county
- FIPS code
- 38105
- State FIPS
- 38
- Population (2023)
- 39,113
- Change since 2020
- -5.0%
- State rank
- 5 of 53
Population is the Census Bureau’s Vintage 2023 estimate.
Other counties in North Dakota
Questions
What is the FIPS code for Williams County?
Williams County, North Dakota has the five-digit FIPS code 38105: 38 for the state and 105 for the county.
What state is Williams County in?
Williams County is in North Dakota.
How do I know if an address is in this county?
Use the address lookup. ZIP codes and city names can cross county lines, so an address is the reliable check.
Sources: U.S. Census Bureau geographic reference files; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.