Benton County, Oregon: Diversifying Metro county. In 2024, voted D+39%. Republican peak: R+52 in 1928.
Key facts
- 2024 presidential margin
- D+39MIT Election Lab
- Political typology
- Diversifying MetroAkashic typology
- Population
- 96,3032024 5-year
- Median household income
- $77,7022024 5-year
- White (non-Hispanic)
- 79.2%2024 5-year
- Black
- 1.3%2024 5-year
- Hispanic / Latino
- 9.4%2024 5-year
- Peak Democratic margin
- D+40 in 2020MIT Election Lab
- Peak Republican margin
- R+52 in 1928MIT Election Lab
- Most similar
- Boulder County, CO · similarity 1.00
2024 results by precinct
2024 precinct map of Benton CountyPrecinct-level 2024 presidential results for Benton County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | −16.9% |
| 1896 | −3.9% |
| 1900 | −9.4% |
| 1904 | −37.5% |
| 1908 | −19.4% |
| 1912 | +10.4% |
| 1916 | −7.2% |
| 1920 | −35.9% |
| 1924 | −32.6% |
| 1928 | −52.4% |
| 1932 | −12.7% |
| 1936 | +2.1% |
| 1940 | −26.6% |
| 1944 | −29.6% |
| 1948 | −35.9% |
| 1952 | −51.1% |
| 1956 | −36.3% |
| 1960 | −28.7% |
| 1964 | +10.4% |
| 1968 | −26.9% |
| 1972 | −15.4% |
| 1976 | −12.5% |
| 1980 | −5.3% |
| 1984 | −5.2% |
| 1988 | +9.3% |
| 1992 | +16.9% |
| 1996 | +13.8% |
| 2000 | +9.5% |
| 2004 | +17.6% |
| 2008 | +31.5% |
| 2012 | +28.5% |
| 2016 | +32.3% |
| 2020 | +39.7% |
| 2024 | +39.3% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 33,909 | 14,187 | 50,232 | ||
| D | 35,827 | 14,878 | 52,799 | ||
| D | 29,193 | 13,445 | 48,753 | ||
| D | 27,776 | 14,991 | 44,802 | ||
| D | 29,901 | 15,264 | 46,478 | ||
| D | 26,515 | 18,460 | 45,735 | ||
| D | 19,444 | 15,825 | 38,226 | ||
| D | 17,211 | 12,450 | 34,500 | ||
| D | 17,966 | 11,550 | 37,923 | ||
| D | 16,930 | 14,004 | 31,610 | ||
| R | 16,073 | 17,836 | 34,062 | ||
| R | 13,150 | 14,982 | 34,507 | ||
| R | 11,887 | 15,555 | 29,307 | ||
| R | 10,842 | 14,906 | 26,456 | ||
| R | 6,538 | 11,654 | 19,016 | ||
| D | 8,971 | 7,250 | 16,486 | ||
| R | 5,391 | 9,734 | 15,125 | ||
| R | 4,214 | 9,016 | 13,230 | ||
| R | 2,966 | 9,229 | 12,262 | ||
| R | 3,135 | 6,839 | 10,329 | ||
| R | 2,830 | 5,242 | 8,141 | ||
| R | 2,942 | 5,089 | 8,079 | ||
| D | 3,547 | 3,390 | 7,423 | ||
| R | 3,121 | 4,068 | 7,433 | ||
| R | 1,412 | 4,605 | 6,095 | ||
| R | 1,579 | 3,417 | 5,631 | ||
| R | 1,719 | 3,752 | 5,663 | ||
| R | 2,488 | 2,902 | 5,722 | ||
| D | 986 | 715 | 2,607 | ||
| R | 773 | 1,183 | 2,113 | ||
| R | 442 | 1,107 | 1,771 | ||
| R | 764 | 931 | 1,786 | ||
| R | 992 | 1,074 | 2,112 | ||
| R | 689 | 1,097 | 2,417 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
18.4%
English
15.7%
Irish
12.3%
Italian
3.5%
Scottish
3.4%
American
3.0%
French
2.7%
African American
1.0%
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
Age distribution by sex
Median age: 34.5 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$77,702
Benton County ranks in the top 25% of US counties.
Benton County$77,702
Oregon$83,011
United States$80,734
Benton County ranks in the top 25% of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
18.2%
Child poverty is below the national average.
Children under 1813.0%
Working age (18–64)20.4%
Seniors (65+)7.9%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
87.0%
speak English only
Spanish5.2%
Asian & Pacific Islander4.3%
Other Indo-European2.7%
Other languages0.7%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 71.9% of residents not counted as adherents by any reporting body.
Benton County's D+39.3 margin in 2024 reflects the outsized political weight of Corvallis, a college town where Oregon State University enrolls roughly a quarter of the county's total population.
The Democratic margin here reached forty points in 2020. The 2024 margin was thirty-nine points.
A population of 96,303, a 79% non-Hispanic-white share, and a median household income of $77,702 describe the county. The county's voting pattern over the last decade is most similar to that of Boulder County and Jefferson County.
Most similar counties
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Benton County, Oregon. Akashic. https://akashic.app/county/41003/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More diversifying metro counties
Frequently asked questions
How did Benton County, Oregon vote in 2024?
In 2024, Benton County, Oregon voted Democratic by 39.3 points (D+39), carried by the Democratic candidate. Out of 50,232 votes cast, 33,909 went Democratic and 14,187 went Republican.
What is Benton County, Oregon's political typology?
Akashic places Benton County, Oregon in the "Diversifying Metro" typology — Mid-size metropolitan counties growing more diverse and trending Democratic. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 13 times, Republican 21 times, and other 0 times.
When did Benton County, Oregon last vote Republican?
The most recent presidential election in which Benton County, Oregon voted Republican was 1984.
How many people live in Benton County, Oregon?
Benton County, Oregon has a population of 96,303 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Benton County, Oregon?
Median household income in Benton County, Oregon is $77,702 — below the national median of $80,734. The Oregon state median is $83,011.
What is the political history of Benton County, Oregon?
Akashic tracks 38 presidential elections in Benton County, Oregon from 1876 to 2024. Of those, 13 went Democratic and 21 went Republican. The county's typology — "Diversifying Metro" — captures where that record, its demographics, and its recent swing place it among American communities.