Benton County's estimated 2026 population is 224,513 with a growth rate of 1.26% in the past year according to the most recent United States census data. Benton County is the 10th largest county in Washington. The 2010 population was 176,467 and has seen a growth of 27.23% since that time.
Data after 2023 is projected based on recent change
Overall: 36.3 years
Female: 37.1 years
Male: 35.5 years
There are 157,326 adults, (33,796 of whom are seniors) in Benton County.
Female: 105,583 (49.6%)
Male: 107,322 (50.4%)
The racial composition of Benton County includes 69.66% White, 9.11% other race, 3.13% Asian, and smaller percentages for Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 148,319 | 69.66% |
| Two or more races | 32,236 | 15.14% |
| Other race | 19,406 | 9.11% |
| Asian | 6,663 | 3.13% |
| Black or African American | 3,542 | 1.66% |
| Native American | 2,237 | 1.05% |
| Native Hawaiian or Pacific Islander | 502 | 0.24% |
Benton County's average per capita income is $58,259. Household income levels show a median of $89,874. The poverty rate stands at 10.99%.
Name | Median | Mean |
|---|---|---|
| Married Families | $123,946 | $151,359 |
| Families | $106,180 | $131,135 |
| Households | $89,874 | $113,863 |
| Non Families | $55,217 | $69,893 |
Average Income
Median Household Income
Poverty Rate