HarrisDemocratic16.3%3,865TrumpRepublican83.0%19,710OliverNonpartisan0.3%72
R+66.7- Lead
- 15,845
- Total
- 23,753
- vs nation
- R+65.2
- Turnout
- 77.1%
Akashiccounty
Mercer County, OH
Contests in this Place (88 available)
President34 · 1892–2024 · 3 mapped
▦ precinct · ▥ counties · ▢ no spatial detail
President margin by year
Place winner margin
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
The precinct map shows the 2024 presidential vote; the timeline scrubs the county’s overall result across 1892–2024.
President results by year
2024 turnout 77.1% of 31,115 citizens 18+
BidenDemocratic17.0%4,030TrumpRepublican81.9%19,452JorgensenLibertarian0.9%204
R+64.9- Lead
- 15,422
- Total
- 23,761
- vs nation
- R+69.4
- Turnout
- 79.6%
ClintonDemocratic15.3%3,384TrumpRepublican79.4%17,506JohnsonLibertarian2.5%562
R+64.0- Lead
- 14,122
- Total
- 22,053
- vs nation
- R+66.1
- Turnout
- 72.9%
ObamaDemocratic21.7%4,745RomneyRepublican75.9%16,561JohnsonLibertarian0.7%142
R+54.2- Lead
- 11,816
- Total
- 21,818
- vs nation
- R+58.0
- Turnout
- —
ObamaDemocratic27.5%5,853McCainRepublican70.9%15,100OtherAll other candidates1.6%346
R+43.4- Lead
- 9,247
- Total
- 21,299
- vs nation
- R+50.7
- Turnout
- —
KerryDemocratic24.5%5,118BushRepublican74.9%15,650OtherAll other candidates0.6%122
R+50.4- Lead
- 10,532
- Total
- 20,890
- vs nation
- R+48.0
- Turnout
- —
GoreDemocratic28.5%5,212BushRepublican68.2%12,485NaderGreen2.1%392
R+39.8- Lead
- 7,273
- Total
- 18,294
- vs nation
- R+40.3
- Turnout
- —
ClintonDemocratic35.7%6,300DoleRepublican50.0%8,832PerotReform13.4%2,361
R+14.3- Lead
- 2,532
- Total
- 17,653
- vs nation
- R+22.9
- Turnout
- —
Key facts
- 2024 presidential margin
- R+66.7MIT Election Lab
- Population
- 42,4842024 5-year
- Population density
- 92 / sq mi2024 5-year · TIGER/Line
- Land area
- 462 sq miTIGER/Line
- Median household income
- $76,7822024 5-year
- White (non-Hispanic)
- 94.2%2024 5-year
- Black
- 1.1%2024 5-year
- Hispanic / Latino
- 2.2%2024 5-year
- Peak Democratic margin
- D+43.2 in 1932MIT Election Lab
- Peak Republican margin
- R+66.7 in 2024MIT Election Lab
- Most similar
- Putnam County, OH · twin score 97.1
Turnout and midterm durability
Participation measured against the same-year citizen voting-age population. Audited cycles count total general-election participants — ballots or participating voters, not presidential candidate votes. Cycles before 2016 predate that series and are derived from the certified presidential returns instead; they are marked everywhere they appear and are excluded from the figures below.
2004–20248 cycles · 5 audited
- 2024 turnout
- 77.1%23,978 participants ÷ 31,115 CVAP
- 2020→2022 drop-off
- +21.2 ptsPresidential-dependent
- Drop-off vs state
- +0.7 ptsPositive means a larger decline than the statewide pattern
- Mechanical 2026
- 55.9%–59.4%Recent-cycle and two-cycle persistence scenarios; not a forecast
Participation by cycle
Presidential Midterm Derived, pre-2016
Select a presidential cycle to show it on the map and results ledger above.
| Cycle | Participants | CVAP | Turnout | Series | Quality |
|---|---|---|---|---|---|
| 23,978 | 31,115 ± 330 | 77.1% | Audited | A/A | |
| 2022Mid | 18,102 | 31,012 ± 210 | 58.4% | Audited | A/A |
| 23,907 | 30,049 ± 171 | 79.6% | Audited | A/A | |
| 2018Mid | 17,609 | 29,963 ± 151 | 58.8% | Audited | A/A |
| 22,053 | 30,233 ± 138 | 72.9% | Audited | A/A | |
| 21,818 | 30,031 | 72.7% | Derived | — | |
| 21,299 | 29,725 | 71.7% | Derived | — | |
| 20,890 | 29,419 extrapolated | 71.0% | Derived | — |
Sources and methods
Audited cycles (2016, 2018, 2020, 2022, 2024) count total general-election participants against the same-year CVAP special tabulation, each cell carrying its own numerator and denominator quality grade. Derived cycles (2004, 2008, 2012) come from the certified presidential returns on this page over the ACS 5-year CVAP series, so they measure presidential votes cast rather than ballots — a floor on participation. Where a derived cycle predates the ACS its denominator is extrapolated rather than read, and says so on its own line below. They are shown for the longer arc and are excluded from the drop-off, excess-drop-off, and 2026 scenario figures above.
- 2024: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 311/228.
- 2022: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 306/183.
- 2020: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 301/2.
- 2018: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 297/138.
- 2016: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 293/111.
- 2012 (derived): Certified presidential returns · ACS 5-year CVAP (B05003); presidential votes cast — a floor on participation, not a ballot count.
- 2008 (derived): Certified presidential returns · ACS 5-year CVAP (B05003); presidential votes cast — a floor on participation, not a ballot count.
- 2004 (derived): Certified presidential returns · extrapolated CVAP denominator; presidential votes cast — a floor on participation, not a ballot count; 2004 predates the ACS, so the denominator is a linear back-extrapolation from the 2008 and 2012 CVAP values, not a read figure.
Interactive election map
One map. Every available contest.
Explore precinct resultsSearch, sort, compare years, or export CSV · 74 precincts
Precinct data
Results by precinct
74 precincts · 23,750 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -MARION EASTMARION EAST | 81 | 982 | 8 | 1,071 | 7.6% | 91.7% | R+84.1 |
|---|---|---|---|---|---|---|---|
| Precinct -MARION WESTMARION WEST | 73 | 931 | 4 | 1,008 | 7.2% | 92.4% | R+85.1 |
| Precinct -ST. HENRY NORTHST. HENRY NORTH | 120 | 810 | 6 | 936 | 12.8% | 86.5% | R+73.7 |
| Precinct -FRANKLIN WESTFRANKLIN WEST | 151 | 694 | 10 | 855 | 17.7% | 81.2% | R+63.5 |
| Precinct -CELINA ACELINA A | 238 | 601 | 7 | 846 | 28.1% | 71.0% | R+42.9 |
| Precinct -FT. RECOVERY VILLAGEFT. RECOVERY VILLAGE | 101 | 688 | 13 | 802 | 12.6% | 85.8% | R+73.2 |
| Precinct -COLDWATER WESTCOLDWATER WEST | 137 | 628 | 5 | 770 | 17.8% | 81.6% | R+63.8 |
| Precinct -RECOVERY TOWNSHIPRECOVERY TOWNSHIP | 38 | 721 | 3 | 762 | 5.0% | 94.6% | R+89.6 |
| Precinct -FRANKLIN EASTFRANKLIN EAST | 135 | 624 | 2 | 761 | 17.7% | 82.0% | R+64.3 |
| Precinct -CELINA BCELINA B | 202 | 546 | 10 | 758 | 26.6% | 72.0% | R+45.4 |
| Precinct -CELINA CCELINA C | 197 | 535 | 5 | 737 | 26.7% | 72.6% | R+45.9 |
| Precinct -WASHINGTON TOWNSHIPWASHINGTON TOWNSHIP | 49 | 660 | 9 | 718 | 6.8% | 91.9% | R+85.1 |
| Precinct -MENDON-UNIONMENDON-UNION | 104 | 603 | 6 | 713 | 14.6% | 84.6% | R+70.0 |
| Precinct -COLDWATER CENTRALCOLDWATER CENTRAL | 133 | 557 | 5 | 695 | 19.1% | 80.1% | R+61.0 |
| Precinct -WEST JEFFERSONWEST JEFFERSON | 135 | 555 | 3 | 693 | 19.5% | 80.1% | R+60.6 |
| Precinct -COLDWATER SOUTHEASTCOLDWATER SOUTHEAST | 115 | 532 | 5 | 652 | 17.6% | 81.6% | R+64.0 |
| Precinct -BUTLER WESTBUTLER WEST | 77 | 564 | 2 | 643 | 12.0% | 87.7% | R+75.7 |
| Precinct -CELINA DCELINA D | 185 | 455 | 2 | 642 | 28.8% | 70.9% | R+42.1 |
| Precinct -HOPEWELL TOWNSHIPHOPEWELL TOWNSHIP | 81 | 546 | 2 | 629 | 12.9% | 86.8% | R+73.9 |
| Precinct -CENTER TOWNSHIPCENTER TOWNSHIP | 95 | 524 | 7 | 626 | 15.2% | 83.7% | R+68.5 |
| Precinct -GIBSON TOWNSHIPGIBSON TOWNSHIP | 28 | 574 | 5 | 607 | 4.6% | 94.6% | R+90.0 |
| Precinct -DUBLIN TOWNSHIPDUBLIN TOWNSHIP | 113 | 488 | 3 | 604 | 18.7% | 80.8% | R+62.1 |
| Precinct -ST. HENRY SOUTHST. HENRY SOUTH | 108 | 493 | 2 | 603 | 17.9% | 81.8% | R+63.8 |
| Precinct -COLDWATER NORTHEASTCOLDWATER NORTHEAST | 101 | 464 | 4 | 569 | 17.8% | 81.5% | R+63.8 |
| Precinct -CELINA GCELINA G | 140 | 417 | 9 | 566 | 24.7% | 73.7% | R+48.9 |
| Precinct -CELINA FCELINA F | 144 | 410 | 7 | 561 | 25.7% | 73.1% | R+47.4 |
| Precinct -CELINA ECELINA E | 142 | 411 | 5 | 558 | 25.4% | 73.7% | R+48.2 |
| Precinct -BUTLER EASTBUTLER EAST | 53 | 487 | 4 | 544 | 9.7% | 89.5% | R+79.8 |
| Precinct -CELINA HCELINA H | 112 | 422 | 3 | 537 | 20.9% | 78.6% | R+57.7 |
| Precinct -EAST JEFFERSON SOUTHEAST JEFFERSON SOUTH | 134 | 390 | 6 | 530 | 25.3% | 73.6% | R+48.3 |
| Precinct -GRANVILLE TOWNSHIP WESTGRANVILLE TOWNSHIP WEST | 24 | 495 | 2 | 521 | 4.6% | 95.0% | R+90.4 |
| Precinct -ROCKFORD VILLAGEROCKFORD VILLAGE | 83 | 435 | 3 | 521 | 15.9% | 83.5% | R+67.6 |
| Precinct -GRANVILLE TOWNSHIP EASTGRANVILLE TOWNSHIP EAST | 41 | 444 | 3 | 488 | 8.4% | 91.0% | R+82.6 |
| Precinct -LIBERTY TOWNSHIPLIBERTY TOWNSHIP | 53 | 412 | 2 | 467 | 11.3% | 88.2% | R+76.9 |
| Precinct -EAST JEFFERSON NORTHEAST JEFFERSON NORTH | 89 | 352 | 3 | 444 | 20.0% | 79.3% | R+59.2 |
| Precinct -BLACKCREEK TOWNSHIPBLACKCREEK TOWNSHIP | 53 | 260 | 0 | 313 | 16.9% | 83.1% | R+66.1 |
| BLACKCREEK TOWNSHIP Voting District39_39107107AAK | 0 | 0 | 0 | 0 | — | — | No votes |
| BUTLER EAST Voting District39_39107107AAL | 0 | 0 | 0 | 0 | — | — | No votes |
| BUTLER WEST Voting District39_39107107AAM | 0 | 0 | 0 | 0 | — | — | No votes |
| CELINA A-101 Voting District39_39107107AAA | 0 | 0 | 0 | 0 | — | — | No votes |
| CELINA A-102 Voting District39_39107107AAB | 0 | 0 | 0 | 0 | — | — | No votes |
| CELINA A-103 Voting District39_39107107AAC | 0 | 0 | 0 | 0 | — | — | No votes |
| CELINA B Voting District39_39107107AAD | 0 | 0 | 0 | 0 | — | — | No votes |
| CELINA C Voting District39_39107107AAE | 0 | 0 | 0 | 0 | — | — | No votes |
| CELINA D Voting District39_39107107AAF | 0 | 0 | 0 | 0 | — | — | No votes |
| CELINA E Voting District39_39107107AAG | 0 | 0 | 0 | 0 | — | — | No votes |
| CELINA F Voting District39_39107107AAH | 0 | 0 | 0 | 0 | — | — | No votes |
| CELINA G Voting District39_39107107AAI | 0 | 0 | 0 | 0 | — | — | No votes |
| CELINA H Voting District39_39107107AAJ | 0 | 0 | 0 | 0 | — | — | No votes |
| CENTER TOWNSHIP Voting District39_39107107AAS | 0 | 0 | 0 | 0 | — | — | No votes |
| COLDWATER CENTRAL Voting District39_39107107AAN | 0 | 0 | 0 | 0 | — | — | No votes |
| COLDWATER NORTHEAST Voting District39_39107107AAO | 0 | 0 | 0 | 0 | — | — | No votes |
| COLDWATER SOUTHEAST Voting District39_39107107AAQ | 0 | 0 | 0 | 0 | — | — | No votes |
| COLDWATER WEST Voting District39_39107107ABT | 0 | 0 | 0 | 0 | — | — | No votes |
| DUBLIN TOWNSHIP Voting District39_39107107AAT | 0 | 0 | 0 | 0 | — | — | No votes |
| EAST JEFFERSON NORTH Voting District39_39107107ABF | 0 | 0 | 0 | 0 | — | — | No votes |
| EAST JEFFERSON SOUTH Voting District39_39107107ABG | 0 | 0 | 0 | 0 | — | — | No votes |
| FRANKLIN EAST Voting District39_39107107AAW | 0 | 0 | 0 | 0 | — | — | No votes |
| FRANKLIN WEST Voting District39_39107107AAX | 0 | 0 | 0 | 0 | — | — | No votes |
| FT. RECOVERY VILLAGE Voting District39_39107107ABN | 0 | 0 | 0 | 0 | — | — | No votes |
| GIBSON TOWNSHIP Voting District39_39107107AAY | 0 | 0 | 0 | 0 | — | — | No votes |
| GRANVILLE EAST Voting District39_39107107AAZ | 0 | 0 | 0 | 0 | — | — | No votes |
| GRANVILLE WEST Voting District39_39107107ABU | 0 | 0 | 0 | 0 | — | — | No votes |
| HOPEWELL TOWNSHIP Voting District39_39107107ABE | 0 | 0 | 0 | 0 | — | — | No votes |
| LIBERTY TOWNSHIP Voting District39_39107107ABI | 0 | 0 | 0 | 0 | — | — | No votes |
| MARION EAST Voting District39_39107107ABL | 0 | 0 | 0 | 0 | — | — | No votes |
| MARION WEST Voting District39_39107107ABM | 0 | 0 | 0 | 0 | — | — | No votes |
| MENDON/UNION Voting District39_39107107ABQ | 0 | 0 | 0 | 0 | — | — | No votes |
| RECOVERY TOWNSHIP Voting District39_39107107ABO | 0 | 0 | 0 | 0 | — | — | No votes |
| ROCKFORD VILLAGE Voting District39_39107107AAU | 0 | 0 | 0 | 0 | — | — | No votes |
| ST. HENRY NORTH Voting District39_39107107ABC | 0 | 0 | 0 | 0 | — | — | No votes |
| ST. HENRY SOUTH Voting District39_39107107ABD | 0 | 0 | 0 | 0 | — | — | No votes |
| WASHINGTON TOWNSHIP Voting District39_39107107ABS | 0 | 0 | 0 | 0 | — | — | No votes |
| WEST JEFFERSON Voting District39_39107107ABH | 0 | 0 | 0 | 0 | — | — | No votes |
presidential history
Party record book
Mercer County, OH · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 · 34 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Franklin D. Roosevelt1932
70.9%
8,462 votes · D+43.2
Runner-up · William J. Bryan, 1896 · 70.2%
Republican
Donald Trump2024
83.0%
19,710 votes · R+66.7
Runner-up · Donald Trump, 2020 · 81.9%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Lyndon B. Johnson1964
10,081votes
69.7% of the vote · D+39.5
Runner-up · Franklin D. Roosevelt, 1932 · 8,462 votes
Republican
Donald Trump2024
19,710votes
83.0% of the vote · R+66.7
Runner-up · Donald Trump, 2020 · 19,452 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
William J. Bryan1896
+47.1pts D vs U.S.
Place D+41.0 · U.S. R+6.1
Runner-up · William J. Bryan, 1900 · +44.8 pts
Republican
Donald Trump2020
+69.4pts R vs U.S.
Place R+64.9 · U.S. D+4.5
Runner-up · Donald Trump, 2016 · +66.1 pts
current representation
Current officeholders
RJames David VanceU.S. Senate
RSusan ManchesterState Senate · 12
RAngie KingState House · 84
Seats representing Mercer County, OH. A county elects none of these itself — they are the members for the 1 congressional, 1 state senate and 1 state house districts it falls inside, so parts of the county are represented by different members.
U.S. House elections · 2 House
Senate and governor results are in the Office selector at the top of this page.
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.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | R | 14.3%3,226 | 85.7%19,351 | 22,577 |
| 2020 | R | 15.5%3,609 | 84.5%19,712 | 23,321 |
voter registration
Registered voters
Total registered voters, over time
Registered voters
| Year | Total registered |
|---|---|
| 2016 | 28,731 |
| 2018 | 29,411 |
| 2020 | 29,398 |
| 2022 | 29,555 |
| 2024 | 29,691 |
domestic migration
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−40 net domestic migration · 2025
20112025
Net −2,164 over 2011–2025 · gain loss
Arrivals reported $57,649 in average income, against $86,211 for residents who stayed — 33% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+53.0 on average — 14 points more Democratic-leaning than Mercer County, OH itself (R+66.7).
Where arrivals came from lean of each source
- Auglaize County, OH146R+64.6
- Darke County, OH47R+65.4
- Van Wert County, OH47R+58.5
- Franklin County, OH29D+28.4
- Jay County, IN25R+55.2
- Allen County, OH25R+44.1
Where departures went households, 2022–23
- Auglaize County, OH150
- Van Wert County, OH54
- Darke County, OH47
- Franklin County, OH44
- Allen County, OH39
- Hamilton County, OH20
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 | −208 |
| 2012 | −115 |
| 2013 | −255 |
| 2014 | −53 |
| 2015 | −192 |
| 2016 | −177 |
| 2017 | −49 |
| 2018 | −206 |
| 2019 | −44 |
| 2021 | −311 |
| 2022 | −174 |
| 2023 | −237 |
| 2024 | −103 |
| 2025 | −40 |
Mercer County's R+66.7 margin in 2024 placed it among the most one-sided presidential results in the state, reflecting a heavily rural, agricultural population concentrated around Celina with deep roots in German Catholic heritage.
Across the recorded series it reached a Democratic high of 43.2 points in 1932 and a Republican high of 66.7 points in 2024. Between 2020 and 2024 the county moved 1.8 points toward the Republican candidate; the 2024 margin was 66.7 points.
A population of 42,484, a 94% non-Hispanic-white share, and a median household income of $76,782 describe the county. The county's voting pattern over the last decade is most similar to that of Putnam County and Osage County.
Political twins — counties
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Putnam County
Ohio
97.1twin score
% Catholic2004–2020 trajectory
Osage County
Missouri
96.4twin score
% Catholic2004–2012 trajectory
Nemaha County
Kansas
94.7twin score
% Catholic2004–2020 trajectory
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.
Mercer County, Ohio. Akashic. https://akashic.app/county/39107/. Accessed May 20, 2026. License: CC BY 4.0.
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Cities & towns in Mercer County
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Frequently asked questions
How did Mercer County, Ohio vote in 2024?
In 2024, Mercer County, Ohio voted Republican by 66.7 points (R+66.7), carried by the Republican candidate. Out of 23,753 votes cast, 3,865 went Democratic and 19,710 went Republican.
When did Mercer County, Ohio last vote Democratic?
The most recent presidential election in which Mercer County, Ohio voted Democratic was 1968.
How many people live in Mercer County, Ohio?
Mercer County, Ohio has a population of 42,484 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Mercer County, Ohio?
Median household income in Mercer County, Ohio is $76,782 — below the national median of $80,734. The Ohio state median is $71,389.
What is the political history of Mercer County, Ohio?
Akashic tracks 38 presidential elections in Mercer County, Ohio from 1876 to 2024. Of those, 14 went Democratic and 20 went Republican.