Umatilla County, Oregon
Precinct data
Results by precinct
45 precincts · 31,225 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -102102 | 497 | 995 | 61 | 1,553 | 32.0% | 64.1% | R+32.1 |
|---|---|---|---|---|---|---|---|
| Precinct -130130 | 478 | 991 | 67 | 1,536 | 31.1% | 64.5% | R+33.4 |
| Precinct -128128 | 543 | 944 | 44 | 1,531 | 35.5% | 61.7% | R+26.2 |
| Precinct -111111 | 662 | 794 | 46 | 1,502 | 44.1% | 52.9% | R+8.8 |
| Precinct -104104 | 271 | 1,167 | 39 | 1,477 | 18.3% | 79.0% | R+60.7 |
| Precinct -141141 | 429 | 925 | 58 | 1,412 | 30.4% | 65.5% | R+35.1 |
| Precinct -103103 | 267 | 964 | 28 | 1,259 | 21.2% | 76.6% | R+55.4 |
| Precinct -105105 | 297 | 894 | 39 | 1,230 | 24.1% | 72.7% | R+48.5 |
| Precinct -126126 | 418 | 735 | 37 | 1,190 | 35.1% | 61.8% | R+26.6 |
| Precinct -129129 | 428 | 699 | 42 | 1,169 | 36.6% | 59.8% | R+23.2 |
| Precinct -137137 | 425 | 648 | 41 | 1,114 | 38.2% | 58.2% | R+20.0 |
| Precinct -143143 | 371 | 710 | 27 | 1,108 | 33.5% | 64.1% | R+30.6 |
| Precinct -138138 | 441 | 564 | 44 | 1,049 | 42.0% | 53.8% | R+11.7 |
| Precinct -120120 | 221 | 780 | 29 | 1,030 | 21.5% | 75.7% | R+54.3 |
| Precinct -139139 | 480 | 463 | 33 | 976 | 49.2% | 47.4% | D+1.7 |
| Precinct -110110 | 212 | 721 | 18 | 951 | 22.3% | 75.8% | R+53.5 |
| Precinct -136136 | 253 | 605 | 47 | 905 | 28.0% | 66.9% | R+38.9 |
| Precinct -132132 | 319 | 509 | 19 | 847 | 37.7% | 60.1% | R+22.4 |
| Precinct -106C106C | 211 | 585 | 28 | 824 | 25.6% | 71.0% | R+45.4 |
| Precinct -113113 | 109 | 574 | 19 | 702 | 15.5% | 81.8% | R+66.2 |
| Precinct -124C124C | 156 | 488 | 23 | 667 | 23.4% | 73.2% | R+49.8 |
| Precinct -142142 | 195 | 444 | 25 | 664 | 29.4% | 66.9% | R+37.5 |
| Precinct -123123 | 146 | 465 | 16 | 627 | 23.3% | 74.2% | R+50.9 |
| Precinct -133133 | 213 | 362 | 18 | 593 | 35.9% | 61.0% | R+25.1 |
| Precinct -127127 | 173 | 379 | 23 | 575 | 30.1% | 65.9% | R+35.8 |
| Precinct -101101 | 82 | 415 | 14 | 511 | 16.0% | 81.2% | R+65.2 |
| Precinct -131131 | 181 | 300 | 10 | 491 | 36.9% | 61.1% | R+24.2 |
| Precinct -121121 | 102 | 314 | 10 | 426 | 23.9% | 73.7% | R+49.8 |
| Precinct -114114 | 57 | 307 | 2 | 366 | 15.6% | 83.9% | R+68.3 |
| Precinct -106R106R | 59 | 262 | 11 | 332 | 17.8% | 78.9% | R+61.1 |
| Precinct -125C125C | 75 | 245 | 11 | 331 | 22.7% | 74.0% | R+51.4 |
| Precinct -125R125R | 62 | 237 | 8 | 307 | 20.2% | 77.2% | R+57.0 |
| Precinct -107C107C | 69 | 206 | 6 | 281 | 24.6% | 73.3% | R+48.8 |
| Precinct -115115 | 50 | 193 | 6 | 249 | 20.1% | 77.5% | R+57.4 |
| Precinct -107R107R | 29 | 191 | 7 | 227 | 12.8% | 84.1% | R+71.4 |
| Precinct -109C109C | 36 | 151 | 9 | 196 | 18.4% | 77.0% | R+58.7 |
| Precinct -124R124R | 27 | 142 | 6 | 175 | 15.4% | 81.1% | R+65.7 |
| Precinct -108R108R | 42 | 118 | 5 | 165 | 25.5% | 71.5% | R+46.1 |
| Precinct -116116 | 49 | 77 | 6 | 132 | 37.1% | 58.3% | R+21.2 |
| Precinct -119119 | 34 | 96 | 2 | 132 | 25.8% | 72.7% | R+47.0 |
| Precinct -108C108C | 26 | 85 | 6 | 117 | 22.2% | 72.6% | R+50.4 |
| Precinct -112112 | 15 | 89 | 4 | 108 | 13.9% | 82.4% | R+68.5 |
| Precinct -117C117C | 19 | 75 | 3 | 97 | 19.6% | 77.3% | R+57.7 |
| Precinct -109R109R | 12 | 42 | 3 | 57 | 21.1% | 73.7% | R+52.6 |
| Precinct -117R117R | 10 | 23 | 1 | 34 | 29.4% | 67.6% | R+38.2 |
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | −30.5% |
| 1896 | +5.6% |
| 1900 | −8.9% |
| 1904 | −45.2% |
| 1908 | −18.2% |
| 1912 | +7.0% |
| 1916 | +10.9% |
| 1920 | −20.1% |
| 1924 | −9.3% |
| 1928 | −37.1% |
| 1932 | +30.4% |
| 1936 | +29.9% |
| 1940 | −2.5% |
| 1944 | −4.0% |
| 1948 | +1.4% |
| 1952 | −19.4% |
| 1956 | −11.4% |
| 1960 | −7.6% |
| 1964 | +27.0% |
| 1968 | −15.7% |
| 1972 | −24.2% |
| 1976 | −7.5% |
| 1980 | −24.8% |
| 1984 | −26.5% |
| 1988 | −10.2% |
| 1992 | −1.6% |
| 1996 | −4.3% |
| 2000 | −27.5% |
| 2004 | −31.1% |
| 2008 | −22.6% |
| 2012 | −27.7% |
| 2016 | −34.0% |
| 2020 | −32.0% |
| 2024 | −37.5% |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | R | 31.1%7,718 | 66.5%16,502 | 24,810 |
| 2020 | R | 35.0%11,253 | 61.8%19,876 | 32,164 |
Registered voters
By party of registration, over time
Registration leans Republican; the presidential vote runs 22 points more Democratic.
51,385 registered voters · 2024 · up from 49,241 in 2022
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−2 net domestic migration · 2025
Net −1,914 over 2011–2025 · gain loss
Arrivals reported $50,372 in average income, against $69,884 for residents who stayed — 28% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+13.6 on average — 24 points more Democratic-leaning than Umatilla County, OR itself (R+37.5).
Where arrivals came from lean of each source
- Benton County, WA143R+21.7
- Morrow County, OR141R+48.0
- Walla Walla County, WA119R+8.0
- Franklin County, WA57R+22.6
- Union County, OR56R+40.0
- Multnomah County, OR43D+61.6
Where departures went households, 2022–23
- Walla Walla County, WA158
- Benton County, WA142
- Morrow County, OR125
- Franklin County, WA63
- Multnomah County, OR59
- Union County, OR50
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 | +292 |
| 2012 | −210 |
| 2013 | −565 |
| 2014 | −663 |
| 2015 | −540 |
| 2016 | −176 |
| 2017 | +7 |
| 2018 | −36 |
| 2019 | +211 |
| 2021 | −285 |
| 2022 | +3 |
| 2023 | −192 |
| 2024 | +242 |
| 2025 | −2 |
Umatilla County anchors Oregon's agricultural southeast, where wheat farming and food-processing industries shape a voting pattern that ran nearly 40 points to the right of the state's statewide result in 2024.
Across the recorded series it reached a Democratic high of 30.4 points in 1932 and a Republican high of 45.2 points in 1904. Between 2020 and 2024 the county moved 5.6 points toward the Republican candidate; the 2024 margin was 37.5 points.
A population of 79,940, a 62% non-Hispanic-white share, and a median household income of $67,728 describe the county. The county's voting pattern over the last decade is most similar to that of Grant County and Tehama 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 →
Umatilla County, Oregon. Akashic. https://akashic.app/county/41059/. Accessed May 20, 2026. License: CC BY 4.0.