Benton County's estimated 2026 population is 223,680 with a growth rate of 1.24% 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 26.75% since that time.
Data after 2023 is projected based on recent change
The racial composition of Benton County includes 72.28% White, 9.25% other race, and smaller percentages for Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (72.28%)
Two or more races (12.66%)
Other race (9.25%)
Asian (2.95%)
Black or African American (1.69%)
Native American (0.95%)
Native Hawaiian or Pacific Islander (0.22%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 151,940 | 72.28% |
| Two or more races | 26,610 | 12.66% |
| Other race | 19,449 | 9.25% |
| Asian | 6,199 | 2.95% |
| Black or African American | 3,563 | 1.69% |
| Native American | 1,998 | 0.95% |
| Native Hawaiian or Pacific Islander | 465 | 0.22% |
Married
Widowed
Divorced
Separated
Never Married
Benton County's average per capita income is $54,556. Household income levels show a median of $87,316. The poverty rate stands at 11.06%.
Name | Median | Mean |
|---|---|---|
| Married Families | $121,154 | $146,548 |
| Families | $103,290 | $127,248 |
| Households | $87,316 | $111,832 |
| Non Families | $53,073 | $68,762 |
Average Income
Median Household Income
Poverty Rate