Williams County's estimated 2025 population is 41,407 with a growth rate of 2.85% in the past year according to the most recent United States census data. Williams County is the 5th largest county in North Dakota. The 2010 population was 22,591 and has seen a growth of 83.29% since that time.
Data after 2023 is projected based on recent change
The racial composition of Williams County includes 81.25% White, 5.23% Black or African American, 3.17% other race, and smaller percentages for Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 31,987 | 81.25% |
| Two or more races | 2,758 | 7.01% |
| Black or African American | 2,059 | 5.23% |
| Other race | 1,247 | 3.17% |
| Native American | 808 | 2.05% |
| Asian | 460 | 1.17% |
| Native Hawaiian or Pacific Islander | 49 | 0.12% |
Married
Widowed
Divorced
Separated
Never Married
Williams County's average per capita income is $57,235. Household income levels show a median of $90,224. The poverty rate stands at 8.76%.
Name | Median | Mean |
|---|---|---|
| Married Families | $133,417 | - |
| Families | $104,598 | $141,246 |
| Households | $90,224 | $119,610 |
| Non Families | $54,229 | $78,516 |
Average Income
Median Household Income
Poverty Rate