HarrisDemocratic34.7%12,934TrumpRepublican64.3%23,982OliverNonpartisan0.6%241
R+29.6- Lead
- 11,048
- Total
- 37,301
- vs nation
- R+28.1
- Turnout
- 76.8%
Akashiccounty
Union County, OH
Office (updates table and map)
President margin by year
Place winner margin
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
President results by year
2024 turnout 76.8% of 49,312 citizens 18+
BidenDemocratic33.3%11,141TrumpRepublican64.8%21,669JorgensenLibertarian1.6%535
R+31.5- Lead
- 10,528
- Total
- 33,445
- vs nation
- R+35.9
- Turnout
- 79.1%
ClintonDemocratic27.6%7,718TrumpRepublican64.7%18,096JohnsonLibertarian4.0%1,119
R+37.1- Lead
- 10,378
- Total
- 27,959
- vs nation
- R+39.2
- Turnout
- 70.8%
ObamaDemocratic34.2%8,805RomneyRepublican63.2%16,289JohnsonLibertarian1.1%280
R+29.1- Lead
- 7,484
- Total
- 25,762
- vs nation
- R+32.9
- Turnout
- —
ObamaDemocratic35.1%8,761McCainRepublican63.0%15,744OtherAll other candidates1.9%479
R+27.9- Lead
- 6,983
- Total
- 24,984
- vs nation
- R+35.2
- Turnout
- —
KerryDemocratic29.5%6,665BushRepublican70.1%15,870OtherAll other candidates0.4%96
R+40.7- Lead
- 9,205
- Total
- 22,631
- vs nation
- R+38.2
- Turnout
- —
GoreDemocratic29.6%5,040BushRepublican67.6%11,502NaderGreen2.0%336
R+38.0- Lead
- 6,462
- Total
- 17,024
- vs nation
- R+38.5
- Turnout
- —
ClintonDemocratic33.3%4,989DoleRepublican55.3%8,290PerotReform10.6%1,596
R+22.0- Lead
- 3,301
- Total
- 15,003
- vs nation
- R+30.5
- Turnout
- —
Key facts
- 2024 presidential margin
- R+29.6MIT Election Lab
- Population
- 67,3242024 5-year
- Median household income
- $112,3222024 5-year
- White (non-Hispanic)
- 84.5%2024 5-year
- Black
- 2.3%2024 5-year
- Hispanic / Latino
- 3.4%2024 5-year
- Peak Democratic margin
- D+5.4 in 1912MIT Election Lab
- Peak Republican margin
- R+56.3 in 1984MIT Election Lab
- Most similar
- Carroll County, MD · twin score 90.8
Midterm durability
Total general-election participants divided by same-year citizen voting-age population. These are total ballots or participating voters—not presidential candidate votes.
- 2024 total turnout
- 76.8%37,879 participants ÷ 49,312 CVAP
- 2020→2022 drop-off
- +24.1 ptsPresidential-dependent
- Drop-off versus state
- +3.6 ptsPositive means a larger decline than the statewide pattern
- Mechanical 2026 scenario
- 52.7%–59.3%Recent-cycle and two-cycle persistence scenarios; not a forecast
| Election | Participants | CVAP | Turnout | Quality |
|---|---|---|---|---|
| 2016 · Presidential | 27,959 | 39,509 | 70.8% | A/A |
| 2018 · Midterm | 24,357 | 40,691 | 59.9% | A/A |
| 2020 · Presidential | 33,705 | 42,636 | 79.1% | A/A |
| 2022 · Midterm | 25,756 | 46,895 | 54.9% | A/A |
| 2024 · Presidential | 37,879 | 49,312 | 76.8% | A/A |
Sources and methods
- 2016: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 293/111.
- 2018: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 297/138.
- 2020: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 301/2.
- 2022: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 306/183.
- 2024: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 311/228.
Precinct data
Results by precinct
98 precincts · 37,288 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -JEROME 6JEROME 6 | 798 | 780 | 9 | 1,587 | 50.3% | 49.1% | D+1.1 |
|---|---|---|---|---|---|---|---|
| Precinct -JEROME 3JEROME 3 | 699 | 658 | 7 | 1,364 | 51.2% | 48.2% | D+3.0 |
| Precinct -DUBLIN CITY 2DUBLIN CITY 2 | 720 | 495 | 9 | 1,224 | 58.8% | 40.4% | D+18.4 |
| Precinct -JEROME 4JEROME 4 | 523 | 539 | 4 | 1,066 | 49.1% | 50.6% | R+1.5 |
| Precinct -PARISPARIS | 290 | 750 | 15 | 1,055 | 27.5% | 71.1% | R+43.6 |
| Precinct -MARYSVILLE 15MARYSVILLE 15 | 394 | 587 | 11 | 992 | 39.7% | 59.2% | R+19.5 |
| Precinct -MARYSVILLE 13MARYSVILLE 13 | 340 | 645 | 5 | 990 | 34.3% | 65.2% | R+30.8 |
| Precinct -ALLEN 2ALLEN 2 | 228 | 711 | 16 | 955 | 23.9% | 74.5% | R+50.6 |
| Precinct -MARYSVILLE 6MARYSVILLE 6 | 373 | 521 | 14 | 908 | 41.1% | 57.4% | R+16.3 |
| Precinct -MARYSVILLE 9MARYSVILLE 9 | 361 | 539 | 8 | 908 | 39.8% | 59.4% | R+19.6 |
| Precinct -PRECINCT MARYSVILLE 16PRECINCT MARYSVILLE 16 | 368 | 525 | 10 | 903 | 40.8% | 58.1% | R+17.4 |
| Precinct -MARYSVILLE 14MARYSVILLE 14 | 350 | 537 | 4 | 891 | 39.3% | 60.3% | R+21.0 |
| Precinct -MILLCREEKMILLCREEK | 246 | 611 | 16 | 873 | 28.2% | 70.0% | R+41.8 |
| Precinct -MARYSVILLE 1MARYSVILLE 1 | 303 | 518 | 9 | 830 | 36.5% | 62.4% | R+25.9 |
| Precinct -DARBY 2DARBY 2 | 242 | 569 | 8 | 819 | 29.5% | 69.5% | R+39.9 |
| Precinct -DARBY 1DARBY 1 | 186 | 611 | 6 | 803 | 23.2% | 76.1% | R+52.9 |
| Precinct -LEESBURGLEESBURG | 194 | 604 | 4 | 802 | 24.2% | 75.3% | R+51.1 |
| Precinct -DOVER 2DOVER 2 | 232 | 540 | 8 | 780 | 29.7% | 69.2% | R+39.5 |
| Precinct -YORKYORK | 149 | 612 | 10 | 771 | 19.3% | 79.4% | R+60.1 |
| Precinct -PRECINCT MARYSVILLE 17PRECINCT MARYSVILLE 17 | 282 | 474 | 8 | 764 | 36.9% | 62.0% | R+25.1 |
| Precinct -MARYSVILLE 5MARYSVILLE 5 | 294 | 449 | 7 | 750 | 39.2% | 59.9% | R+20.7 |
| Precinct -CLAIBOURNECLAIBOURNE | 145 | 601 | 3 | 749 | 19.4% | 80.2% | R+60.9 |
| Precinct -JEROME 2JEROME 2 | 340 | 399 | 6 | 745 | 45.6% | 53.6% | R+7.9 |
| Precinct -DUBLIN CITY 1DUBLIN CITY 1 | 365 | 362 | 7 | 734 | 49.7% | 49.3% | D+0.4 |
| Precinct -PRECINCT DUBLIN CITY 3PRECINCT DUBLIN CITY 3 | 321 | 403 | 5 | 729 | 44.0% | 55.3% | R+11.2 |
| Precinct -MARYSVILLE 8MARYSVILLE 8 | 259 | 443 | 17 | 719 | 36.0% | 61.6% | R+25.6 |
| Precinct -MARYSVILLE 2MARYSVILLE 2 | 285 | 429 | 3 | 717 | 39.7% | 59.8% | R+20.1 |
| Precinct -PRECINCT JEROME 7PRECINCT JEROME 7 | 213 | 476 | 9 | 698 | 30.5% | 68.2% | R+37.7 |
| Precinct -LIBERTY 2LIBERTY 2 | 161 | 520 | 12 | 693 | 23.2% | 75.0% | R+51.8 |
| Precinct -ALLEN 1ALLEN 1 | 167 | 518 | 3 | 688 | 24.3% | 75.3% | R+51.0 |
| Precinct -JEROME 5JEROME 5 | 191 | 474 | 9 | 674 | 28.3% | 70.3% | R+42.0 |
| Precinct -MARYSVILLE 3MARYSVILLE 3 | 235 | 415 | 4 | 654 | 35.9% | 63.5% | R+27.5 |
| Precinct -MARYSVILLE 12MARYSVILLE 12 | 201 | 411 | 13 | 625 | 32.2% | 65.8% | R+33.6 |
| Precinct -MARYSVILLE 4MARYSVILLE 4 | 197 | 407 | 9 | 613 | 32.1% | 66.4% | R+34.3 |
| Precinct -DOVER 1DOVER 1 | 170 | 434 | 6 | 610 | 27.9% | 71.1% | R+43.3 |
| Precinct -UNIONUNION | 163 | 438 | 3 | 604 | 27.0% | 72.5% | R+45.5 |
| Precinct -MARYSVILLE 11MARYSVILLE 11 | 201 | 381 | 6 | 588 | 34.2% | 64.8% | R+30.6 |
| Precinct -LIBERTY 1LIBERTY 1 | 109 | 450 | 9 | 568 | 19.2% | 79.2% | R+60.0 |
| Precinct -MARYSVILLE 10MARYSVILLE 10 | 203 | 349 | 8 | 560 | 36.3% | 62.3% | R+26.1 |
| Precinct -TAYLOR 2TAYLOR 2 | 134 | 408 | 2 | 544 | 24.6% | 75.0% | R+50.4 |
| Precinct -MARYSVILLE 7MARYSVILLE 7 | 204 | 319 | 9 | 532 | 38.3% | 60.0% | R+21.6 |
| Precinct -PRECINCT MARYSVILLE 18PRECINCT MARYSVILLE 18 | 196 | 329 | 4 | 529 | 37.1% | 62.2% | R+25.1 |
| Precinct -JACKSONJACKSON | 73 | 437 | 6 | 516 | 14.1% | 84.7% | R+70.5 |
| Precinct -JEROME 1JEROME 1 | 165 | 344 | 3 | 512 | 32.2% | 67.2% | R+35.0 |
| Precinct -RICHWOOD 2RICHWOOD 2 | 92 | 390 | 2 | 484 | 19.0% | 80.6% | R+61.6 |
| Precinct -RICHWOOD 1RICHWOOD 1 | 117 | 355 | 4 | 476 | 24.6% | 74.6% | R+50.0 |
| Precinct -WASHINGTONWASHINGTON | 101 | 365 | 3 | 469 | 21.5% | 77.8% | R+56.3 |
| Precinct -PLAIN CITYPLAIN CITY | 140 | 289 | 10 | 439 | 31.9% | 65.8% | R+33.9 |
| Precinct -TAYLOR 1TAYLOR 1 | 103 | 290 | 3 | 396 | 26.0% | 73.2% | R+47.2 |
| Precinct -MILFORD CENTERMILFORD CENTER | 111 | 271 | 6 | 388 | 28.6% | 69.8% | R+41.2 |
| Voting District ALLEN 139_39159159AAN | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District ALLEN 239_39159159ABW | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District CLAIBOURNE 139_39159159AAO | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District CLAIBOURNE 239_39159159AAP | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District DARBY 139_39159159AAU | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District DARBY 239_39159159AAV | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District DARBY 339_39159159AAW | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District DOVER 139_39159159AAX | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District DOVER 239_39159159AAY | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District DUBLIN CITY 139_39159159ABX | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District DUBLIN CITY 239_39159159ABY | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District JACKSON39_39159159AAZ | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District JEROME 139_39159159ABA | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District JEROME 239_39159159ABB | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District JEROME 339_39159159ABC | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District JEROME 439_39159159ABD | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District JEROME 539_39159159ABF | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District LEESBURG39_39159159ABG | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District LIBERTY 139_39159159ABI | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District LIBERTY 239_39159159ABJ | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MAGNETIC SPRINGS39_39159159ABH | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MARYSVILLE 139_39159159AAA | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MARYSVILLE 1039_39159159AAH | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MARYSVILLE 1139_39159159AAI | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MARYSVILLE 1239_39159159AAE | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MARYSVILLE 1339_39159159AAB | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MARYSVILLE 1439_39159159ABV | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MARYSVILLE 239_39159159AAF | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MARYSVILLE 339_39159159AAG | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MARYSVILLE 439_39159159AAC | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MARYSVILLE 539_39159159AAK | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MARYSVILLE 639_39159159AAJ | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MARYSVILLE 739_39159159AAL | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MARYSVILLE 839_39159159AAM | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MARYSVILLE 939_39159159AAD | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MILFORD CENTER39_39159159ABQ | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District MILLCREEK39_39159159ABK | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District PARIS 139_39159159ABL | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District PARIS 239_39159159ABM | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District PLAIN CITY39_39159159ABE | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District RICHWOOD 139_39159159AAQ | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District RICHWOOD 239_39159159AAS | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District TAYLOR 139_39159159ABO | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District TAYLOR 239_39159159ABP | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District UNION 139_39159159ABR | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District UNION 239_39159159ABS | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District WASHINGTON39_39159159ABT | 0 | 0 | 0 | 0 | — | — | No votes |
| Voting District YORK39_39159159ABU | 0 | 0 | 0 | 0 | — | — | No votes |
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1892 | −17.1% |
| 1896 | −11.8% |
| 1900 | −17.5% |
| 1904 | −30.1% |
| 1908 | −16.0% |
| 1912 | +5.4% |
| 1916 | −7.2% |
| 1920 | −33.0% |
| 1924 | −32.0% |
| 1928 | −41.9% |
| 1932 | +0.3% |
| 1936 | −4.7% |
| 1940 | −29.3% |
| 1944 | −40.8% |
| 1948 | −30.8% |
| 1952 | −46.4% |
| 1956 | −48.1% |
| 1960 | −43.1% |
| 1964 | −4.9% |
| 1968 | −38.9% |
| 1972 | −53.8% |
| 1976 | −25.6% |
| 1980 | −40.6% |
| 1984 | −56.3% |
| 1988 | −47.4% |
| 1992 | −29.5% |
| 1996 | −22.0% |
| 2000 | −38.0% |
| 2004 | −40.7% |
| 2008 | −27.9% |
| 2012 | −29.1% |
| 2016 | −37.1% |
| 2020 | −31.5% |
| 2024 | −29.6% |
DemocraticRepublican
Federal and statewide elections · 3 House · 38 Senate · 2 Senate special · 12 governor
U.S. House
Each row shows U.S. House votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
U.S. Senate
Each row shows U.S. Senate votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
U.S. Senate special elections
Each row shows U.S. Senate special votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
Governor
Each row shows Governor votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
voter registration
Registered voters
Total registered voters, over time
Registered voters
| Year | Total registered |
|---|---|
| 2016 | 36,206 |
| 2018 | 38,670 |
| 2020 | 41,432 |
| 2022 | 43,579 |
| 2024 | 47,353 |
domestic migration
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
+1,002 net domestic migration · 2025
20112025
Net +11,712 over 2011–2025 · gain loss
Arrivals reported $102,901 in average income, against $118,949 for residents who stayed — 13% lower. (IRS SOI, 2022–23)
The places arrivals came from lean D+3.4 on average — 33 points more Democratic-leaning than Union County, OH itself (R+29.6).
Where arrivals came from lean of each source
- Franklin County, OH1,015D+28.4
- Delaware County, OH239R+6.6
- Madison County, OH125R+43.7
- Logan County, OH124R+56.2
- Champaign County, OH78R+50.7
- Marion County, OH61R+41.4
Where departures went households, 2022–23
- Franklin County, OH521
- Delaware County, OH187
- Logan County, OH159
- Marion County, OH90
- Madison County, OH83
- Champaign County, OH76
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 | +325 |
| 2012 | −659 |
| 2013 | +301 |
| 2014 | +23 |
| 2015 | +243 |
| 2016 | +815 |
| 2017 | +870 |
| 2018 | +664 |
| 2019 | +859 |
| 2021 | +1,875 |
| 2022 | +1,456 |
| 2023 | +2,378 |
| 2024 | +1,560 |
| 2025 | +1,002 |
Union County sits northwest of Columbus and has absorbed significant suburban spillover growth, yet its presidential margins have remained consistently above R+25 since 2000, suggesting new residents skew toward the county's existing political profile.
Across the recorded series it reached a Democratic high of 5.4 points in 1912 and a Republican high of 56.3 points in 1984. Between 2020 and 2024 the county moved 1.9 points toward the Democratic candidate; the 2024 margin was 29.6 points.
A population of 67,324, a 85% non-Hispanic-white share, and a median household income of $112,322 describe the county. The county's voting pattern over the last decade is most similar to that of Carroll County and Oldham County.
Political twins — counties
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Carroll County
Maryland
90.8twin score
median income2004 margincollege share≠ Irish ancestry
Oldham County
Kentucky
90.1twin score
median income2000–2004 trajectorycollege share≠ 12-yr trend
Boone County
Kentucky
88.5twin score
12-yr trend2000–2004 trajectorymedian income
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 →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Union County, Ohio. Akashic. https://akashic.app/county/39159/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Embed this page
A live widget for your site — no API key, attribution built in, CC BY 4.0. All widgets & sizes →
Cities & towns in Union County
Ohio at the ballot boxAll elections →
Frequently asked questions
How did Union County, Ohio vote in 2024?
In 2024, Union County, Ohio voted Republican by 29.6 points (R+29.6), carried by the Republican candidate. Out of 37,301 votes cast, 12,934 went Democratic and 23,982 went Republican.
When did Union County, Ohio last vote Democratic?
The most recent presidential election in which Union County, Ohio voted Democratic was 1932.
How many people live in Union County, Ohio?
Union County, Ohio has a population of 67,324 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Union County, Ohio?
Median household income in Union County, Ohio is $112,322 — above the national median of $80,734. The Ohio state median is $71,389.
What is the political history of Union County, Ohio?
Akashic tracks 38 presidential elections in Union County, Ohio from 1876 to 2024. Of those, 2 went Democratic and 32 went Republican.