Benton County, Oregon
Precinct data
Results by precinct
21 precincts · 50,220 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -1111 | 3,164 | 2,606 | 216 | 5,986 | 52.9% | 43.5% | D+9.3 |
|---|---|---|---|---|---|---|---|
| Precinct -1616 | 3,593 | 1,569 | 221 | 5,383 | 66.7% | 29.1% | D+37.6 |
| Precinct -88 | 3,752 | 726 | 158 | 4,636 | 80.9% | 15.7% | D+65.3 |
| Precinct -11 | 3,307 | 835 | 164 | 4,306 | 76.8% | 19.4% | D+57.4 |
| Precinct -77 | 3,003 | 422 | 162 | 3,587 | 83.7% | 11.8% | D+72.0 |
| Precinct -33 | 2,535 | 612 | 151 | 3,298 | 76.9% | 18.6% | D+58.3 |
| Precinct -99 | 2,321 | 764 | 149 | 3,234 | 71.8% | 23.6% | D+48.1 |
| Precinct -1010 | 1,891 | 1,114 | 141 | 3,146 | 60.1% | 35.4% | D+24.7 |
| Precinct -66 | 2,406 | 483 | 166 | 3,055 | 78.8% | 15.8% | D+62.9 |
| Precinct -1515 | 1,443 | 1,284 | 118 | 2,845 | 50.7% | 45.1% | D+5.6 |
| Precinct -55 | 1,638 | 243 | 102 | 1,983 | 82.6% | 12.3% | D+70.3 |
| Precinct -22 | 1,272 | 265 | 96 | 1,633 | 77.9% | 16.2% | D+61.7 |
| Precinct -1818 | 649 | 786 | 56 | 1,491 | 43.5% | 52.7% | R+9.2 |
| Precinct -1919 | 660 | 502 | 34 | 1,196 | 55.2% | 42.0% | D+13.2 |
| Precinct -44 | 833 | 128 | 52 | 1,013 | 82.2% | 12.6% | D+69.6 |
| Precinct -2020 | 305 | 526 | 29 | 860 | 35.5% | 61.2% | R+25.7 |
| Precinct -1212 | 463 | 272 | 35 | 770 | 60.1% | 35.3% | D+24.8 |
| Precinct -2121 | 270 | 464 | 25 | 759 | 35.6% | 61.1% | R+25.6 |
| Precinct -1414 | 224 | 365 | 28 | 617 | 36.3% | 59.2% | R+22.9 |
| Precinct -1313 | 149 | 208 | 16 | 373 | 39.9% | 55.8% | R+15.8 |
| Precinct -1717 | 31 | 13 | 5 | 49 | 63.3% | 26.5% | D+36.7 |
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 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% |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | D | 66.5%29,953 | 29.7%13,407 | 45,069 |
| 2020 | D | 67.4%35,021 | 28.5%14,811 | 51,991 |
Registered voters
By party of registration, over time
Registration leans Democratic; the presidential vote runs 17 points more Republican.
62,233 registered voters · 2024 · up from 60,964 in 2022
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−244 net domestic migration · 2025
Net +3,461 over 2011–2025 · gain loss
Arrivals reported $58,216 in average income, against $103,178 for residents who stayed — 44% lower. (IRS SOI, 2022–23)
The places arrivals came from lean D+8.9 on average — 30 points more Republican-leaning than Benton County, OR itself (D+39.3).
Where arrivals came from lean of each source
- Linn County, OR511R+24.3
- Lane County, OR268D+22.9
- Marion County, OR219R+2.0
- Multnomah County, OR211D+61.6
- Washington County, OR147D+33.7
- Clackamas County, OR126D+9.8
Where departures went households, 2022–23
- Linn County, OR761
- Lane County, OR316
- Multnomah County, OR303
- Marion County, OR232
- Washington County, OR220
- Polk County, OR145
Migration is one input to a place’s political change, not its cause — a shift can also come from residents changing their minds, generational turnover, or turnout. These figures describe the places people moved between; they do not measure how any mover voted.
| Year | Net domestic migration |
|---|---|
| 2011 | −124 |
| 2012 | −158 |
| 2013 | −1,028 |
| 2014 | +383 |
| 2015 | +508 |
| 2016 | +496 |
| 2017 | +1,158 |
| 2018 | +211 |
| 2019 | +168 |
| 2021 | −708 |
| 2022 | +3,636 |
| 2023 | +104 |
| 2024 | −941 |
| 2025 | −244 |
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.
Across the recorded series it reached a Democratic high of 39.7 points in 2020 and a Republican high of 52.4 points in 1928. The 2024 margin was 39.3 points.
A population of 96,303, a 76% 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 Douglas County and Boulder County.
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Browse places by community — income, education, race & ethnicity, language — all community cuts →
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 →
Benton County, Oregon. Akashic. https://akashic.app/county/41003/. Accessed May 20, 2026. License: CC BY 4.0.