Adams County's estimated 2026 population is 21,403 with a growth rate of 0.86% in the past year according to the most recent United States census data. Adams County is the 31st largest county in Washington. The 2010 population was 18,791 and has seen a growth of 13.9% since that time.
Data after 2023 is projected based on recent change
The racial composition of Adams County includes 47.75% White, 28.46% other race, and smaller percentages for Native American, Asian, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
White (47.75%)
Other race (28.46%)
Two or more races (20.02%)
Native American (2.49%)
Asian (0.62%)
Black or African American (0.37%)
Native Hawaiian or Pacific Islander (0.27%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 9,880 | 47.75% |
| Other race | 5,889 | 28.46% |
| Two or more races | 4,143 | 20.02% |
| Native American | 516 | 2.49% |
| Asian | 129 | 0.62% |
| Black or African American | 77 | 0.37% |
| Native Hawaiian or Pacific Islander | 56 | 0.27% |
Married
Widowed
Divorced
Separated
Never Married
Adams County's average per capita income is $36,620. Household income levels show a median of $65,042. The poverty rate stands at 20.49%.
Name | Median | Mean |
|---|---|---|
| Married Families | $82,778 | - |
| Families | $70,719 | $86,519 |
| Households | $65,042 | $82,379 |
| Non Families | $34,583 | $58,382 |
Average Income
Median Household Income
Poverty Rate