Foster County's estimated 2025 population is 3,167 with a growth rate of -2.19% in the past year according to the most recent United States census data. Foster County is the 32nd largest county in North Dakota. The 2010 population was 3,343 and has seen a growth of -5.26% since that time.
Data after 2023 is projected based on recent change
The racial composition of Foster County includes 94.25% White, and smaller percentages for Asian, Black or African American, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,178 | 94.25% |
| Two or more races | 110 | 3.26% |
| Asian | 45 | 1.33% |
| Black or African American | 12 | 0.36% |
| Other race | 12 | 0.36% |
| Native American | 8 | 0.24% |
| Native Hawaiian or Pacific Islander | 7 | 0.21% |
Married
Widowed
Divorced
Separated
Never Married
Foster County's average per capita income is $52,370. Household income levels show a median of $83,412. The poverty rate stands at 9.12%.
Name | Median | Mean |
|---|---|---|
| Married Families | $114,014 | - |
| Families | $112,837 | $121,504 |
| Households | $83,412 | $94,603 |
| Non Families | $42,969 | $50,845 |
Average Income
Median Household Income
Poverty Rate