Benton County, Washington Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 10th-largest in Washington
The population of Benton County, Washington is 210,224 as of the 2023 American Community Survey, making it the 10th-largest county in Washington. The median household income is $87,316, the median home value is $369,400, and the median age is 36.2.
The population of Benton County has grown 23.6% since 2010 (176,467 → 218,190), a +1.53% annualized rate.
210,224
Population
+1.53%
Annual growth
124
People / sq mi
$87,316
Median Income
$369,400
Median Home Value
Benton County covers 1,700 sq mi of land at 123.7 people per square mile.
About Benton County, WA
Benton County is a county in Washington with a population of 210,224. It ranks #10 among counties in Washington by population. The median age is 36.2, younger than the national median. The population is 50.4% male and 49.6% female.
The median household income in Benton County is $87,316, above the US median of $74,580. 8.4% of residents live below the federal poverty level. Home values sit at a median of $369,400, with monthly rent averaging $1,256. The homeownership rate of 68.5% is higher than the national rate of 64.8%.
Educational attainment in Benton County reflects 33.0% of adults 25 and older holding a bachelor's degree or higher, near the national average of 34.3%. Roughly 11.6% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 22.2 minutes each way.
Benton County Population History (2010-2024)
The county of Benton County had a population of 176,467 in 2010 and 218,190 in 2024, a 23.6% growth over 14 years. The peak was 218,190 in 2024. Average annual growth rate: 1.53%.
218,190
Population (2024)
176,467
Population (2010)
218,190
Peak (2024)
1.53%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 176,467 |
| 2011 | 180,449 |
| 2012 | 182,400 |
| 2013 | 184,362 |
| 2014 | 186,535 |
| 2015 | 190,282 |
| 2016 | 193,573 |
| 2017 | 198,229 |
| 2018 | 201,174 |
| 2019 | 204,173 |
| 2020 | 207,426 |
| 2021 | 210,627 |
| 2022 | 212,838 |
| 2023 | 215,445 |
| 2024 | 218,190 |
Race & Ethnicity
| White | 72.3% |
| Black or African American | 1.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.7% |
| Two or More Races | 0.0% |
Age & Sex
36.2
Median Age
49.6%
Female
50.4%
Male
15.5%
Age 65+
Age Distribution
Children (under 15): 21.8% · Seniors (65+): 15.5%
Income & Poverty
| Median household income | $87,316$-7,636 vs state |
| Mean household income | $111,832 |
| Per-capita income | $41,588 |
| Poverty rate | 8.4%+2.0% vs state |
| Unemployment rate | 3.1% |
| Employment-to-population | 59.1% |
Top Industries by Employment
The largest employment sector in Benton County is professional & business services, accounting for 21.7% of workers.
How residents commute
1.1%
Drive alone
1.1%
Carpool
75.0%
Public transit
11.6%
Work from home
22.2 min
Avg commute
Housing
$369,400$-150,400 vs state
Median home value
$1,256
Median rent
68.5%
Homeownership rate
81,792
Total housing units
93.8%
Occupied
6.2%
Vacant
31.5%
Renter-occupied
Social & access
92.5%
With health insurance
96.1%
With broadband internet
34.7%
Foreign-born
7.8%
Veterans (18+)
14.4%
With a disability
78.7%
Speak language other than English at home
Education
89.9%
High School+
33.0%
Bachelor's+
Largest cities in Washington
Other counties in Washington
Part of Washington
Metro areas in Washington
County rankings
Frequently Asked Questions
Benton County, Washington has a population of 210,224 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 10th-largest county in Washington. Population density is 124 people per square mile.
The population of Benton County has grown 23.6% since 2010 (176,467 → 218,190), a +1.53% annualized rate.
The median household income in Benton County, Washington is $87,316, with mean (average) household income of $111,832 and per-capita income of $41,588. 8.4% of residents live below the federal poverty level.
In Benton County, the largest racial and ethnic groups are White (72.3%), Hispanic or Latino (2.7%), Black or African American (1.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Benton County, Washington is 36.2 years. Residents are 49.6% female and 50.4% male.
The median home value in Benton County is $369,400 and median monthly rent is $1,256. 68.5% of occupied housing units are owner-occupied. The county has 81,792 total housing units, 6.2% of which are vacant.
The largest employment sector in Benton County, Washington is professional, scientific, and management services, employing 21.7% of workers. The unemployment rate is 3.1%.
Seattle is among the largest cities associated with Benton County, Washington, with a population of 741,440.
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Statewide data for Washington
Population, race, income, age, and trends across Washington
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.