| Name | Williams County |
| State | North Dakota |
| FIPS Code | 38105 |
| County Seat | Williston |
| Timezone | Central Daylight Time (CDT) |
| Population (2024) | 39,304 |
| Population Growth Rate(2020-2024) | -4.19% |
| Majority Ethnicity | White 81.66% |
| Public School Majority Ethnicity | White 68% |
| Partisan Voting Index | Strongly Republican:+34 |
| Unemployment Rate (May 2026) | 3.3% |
| Sales Tax Rate (2025) | 6% |
| Area Code(s) | 701 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 81.66% |
| African American | 5.26% |
| Hispanic | 9.72% |
| Asian | 1.17% |
| Native American | 2.06% |
| Hawaiin/Pacific Islander | 0.13% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 67.5% |
| African American | 4.67% |
| Hispanic | 14.57% |
| Asian | 1.01% |
| Native American | 3.26% |
| Hawaiin/Pacific Islander | 0.32% |