Benton County's 2026 population is estimated at 99,565, reflecting a 0.34% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Benton County is the 11th largest county in Oregon. The 2010 population was 85,577 and has grown 16.35% since 2010.
Data after 2023 is projected based on recent change
Overall: 34.5 years
Female: 36.8 years
Male: 33 years
There are 81,153 adults, (17,318 of whom are seniors) in Benton County.
Female: 47,772 (49.6%)
Male: 48,531 (50.4%)
The racial composition of Benton County includes 79.22% White, 6.66% Asian, and smaller percentages for other race, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 76,292 | 79.22% |
| Two or more races | 8,507 | 8.83% |
| Asian | 6,413 | 6.66% |
| Other race | 2,624 | 2.72% |
| Black or African American | 1,260 | 1.31% |
| Native American | 1,011 | 1.05% |
| Native Hawaiian or Pacific Islander | 196 | 0.2% |
Benton County 's average per capita income is $51,681. Household income levels show a median of $77,702. The poverty rate stands at 18.2%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $132,173 | $171,369 |
| Families | $115,974 | $150,592 |
| Households | $77,702 | $110,290 |
| Non Families | $43,600 | $58,395 |
Average Income
Median Household Income
Poverty Rate
