Benton County's 2026 population is estimated at 25,859, reflecting a 0.12% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Benton County is the 25th largest county in Iowa. The 2010 population was 26,049 and has grown -0.73% since 2010.
Data after 2023 is projected based on recent change
Overall: 43.1 years
Female: 44 years
Male: 42.3 years
There are 19,843 adults, (5,093 of whom are seniors) in Benton County.
Female: 12,777 (49.7%)
Male: 12,947 (50.3%)
The racial composition of Benton County includes 94.76% White, and smaller percentages for other race, Black or African American, Asian, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 24,375 | 94.76% |
| Two or more races | 837 | 3.25% |
| Other race | 319 | 1.24% |
| Black or African American | 107 | 0.42% |
| Asian | 60 | 0.23% |
| Native American | 26 | 0.1% |
Benton County 's average per capita income is $57,237. Household income levels show a median of $86,962. The poverty rate stands at 7.38%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $114,772 | - |
| Families | $107,203 | $121,503 |
| Households | $86,962 | $101,158 |
| Non Families | $41,167 | $55,004 |
Average Income
Median Household Income
Poverty Rate
