2nd most populous of 75
With 321,566 residents in 2024, Benton County ranks 2nd by population among Arkansas's 75 counties and is home to 10.4% of the state's residents.

Benton County has the highest median household income in Arkansas ($93,506) and the most expensive homes (median value $323,500).
Benton County is home to 321,566 people (2024 estimate) on 848 square miles of land. This page brings together official U.S. Census Bureau population estimates since 2000, the components of change—births, deaths and migration—American Community Survey indicators on income, housing, poverty and education, BEA economic accounts and BLS unemployment.
Pick an indicator to see its long-run evolution.
U.S. Census Bureau: intercensal estimates 2000–2009, Vintage 2020 (2010–2019) and Vintage 2024 (2020–2024), July 1.
| Indicator | Value | Year and source |
|---|---|---|
| Population estimate | 321,566 | 2024 · U.S. Census Bureau |
| Population, 2010 Census | 221,339 | 2010 · U.S. Census Bureau |
| Population, 2000 | 154,744 | July 1, 2000 · Census intercensal |
| Change since 2000 | +107.8% | 2000–2024 · Census |
| International migration | +1,814 | 2024 · Census Vintage 2024 |
| Domestic migration | +5,720 | 2024 · Census Vintage 2024 |
| Birth rate | 12.4 per 1,000 | 2024 · calculated |
| Death rate | 6.9 per 1,000 | 2024 · calculated |
| Population rank in Arkansas | 2nd of 75 | 2024 · calculated |
| Per capita personal income | $120,594 | BEA, 2024 · official |
| Gross domestic product | $26.1 billion | BEA, current dollars, 2024 · official |
| Median household income | $93,506 | ACS 2020–2024 5-year · official |
| Poverty rate | 7.6% | ACS 2020–2024 5-year · official |
| Bachelor’s degree or higher | 37.8% | Age 25+, ACS 2020–2024 5-year · official |
| Foreign-born residents | 12.7% | ACS 2020–2024 5-year · official |
| Median home value | $323,500 | ACS 2020–2024 5-year · official |
| Median gross rent | $1,277/month | ACS 2020–2024 5-year · official |
| Median age | 35.9 years | ACS 2020–2024 5-year · official |
| Households | 111,919 | ACS 2020–2024 5-year · official |
| Owner-occupied homes | 67.0% | ACS 2020–2024 5-year · official |
Comparable indicators for Benton County, Arkansas and the United States.
| Indicator | County | Arkansas | U.S. | Reference |
|---|---|---|---|---|
| Population change 2020–2024 | +13.1% | +2.6% | +2.6% | Census Vintage 2024 |
| Birth rate (per 1,000) | 12.4 | 11.4 | 10.6 | 2024 |
| Death rate (per 1,000) | 6.9 | 11.6 | 9.1 | 2024 |
| Net migration rate (per 1,000) | 23.4 | 6.4 | 8.2 | 2024 |
| Population density (/mi²) | 379.3 | 59.4 | 96.3 | 2024 |
| Per capita personal income | $120,594 | $59,320 | $73,204 | BEA, 2024 |
| Median household income | $93,506 | $60,773 | $80,734 | ACS 2020–2024 5-year |
| Poverty rate | 7.6% | 16.0% | 12.5% | ACS 2020–2024 5-year |
| Bachelor’s degree or higher | 37.8% | 25.7% | 35.7% | Age 25+, ACS 2020–2024 5-year |
| Foreign-born residents | 12.7% | 5.4% | 14.1% | ACS 2020–2024 5-year |
| Median home value | $323,500 | $188,000 | $332,700 | ACS 2020–2024 5-year |
| Median gross rent | $1,277/month | $947/month | $1,413/month | ACS 2020–2024 5-year |
| Median age | 35.9 years | 38.5 years | 38.9 years | ACS 2020–2024 5-year |
| Owner-occupied homes | 67.0% | 66.4% | 65.2% | ACS 2020–2024 5-year |
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With 321,566 residents in 2024, Benton County ranks 2nd by population among Arkansas's 75 counties and is home to 10.4% of the state's residents.
Its population went from 154,744 in 2000 to 321,566 in 2024, a change of +107.8%, compared with +15.3% for Arkansas as a whole.
In the year to July 2024 the county recorded 4,001 births and 2,233 deaths, so births outnumbered deaths by 1,768.
Annual Census estimates since 2000 put the county's highest population in 2024, at 321,566.
Benton County has about 379.3 residents per square mile of land, ranking 2nd of 75 counties; Arkansas averages 59.4.
With a median household income of $93,506 (ACS 2020–2024 5-year), the county ranks 1st of 75 Arkansas counties; the state median is $60,773.
Its economy produced $26.1 billion of GDP in 2024 (BEA), 2nd largest among 75 Arkansas counties.
Real GDP grew 8.0% in 2024, adjusted for inflation (BEA, chained 2017 dollars).