HarrisDemocratic53.3%159,962TrumpRepublican44.5%133,544EllisIndependent0.6%1,799
D+8.8- Lead
- 26,418
- Total
- 300,129
- vs nation
- D+10.3
- Turnout
- 75.2%
Akashiccounty
Plymouth County, MA
Office (updates table and map)
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 75.2% of 404,008 citizens 18+
BidenDemocratic57.1%173,630TrumpRepublican39.9%121,227JorgensenLibertarian1.4%4,310
D+17.2- Lead
- 52,403
- Total
- 303,870
- vs nation
- D+12.8
- Turnout
- 77.9%
ClintonDemocratic49.2%135,513TrumpRepublican41.9%115,369JohnsonLibertarian4.6%12,542
D+7.3- Lead
- 20,144
- Total
- 275,506
- vs nation
- D+5.2
- Turnout
- 73.1%
ObamaDemocratic51.4%131,845RomneyRepublican47.2%121,086OtherAll other candidates1.4%3,600
D+4.2- Lead
- 10,759
- Total
- 256,531
- vs nation
- D+0.3
- Turnout
- —
ObamaDemocratic52.8%131,817McCainRepublican45.2%112,904OtherAll other candidates2.0%5,096
D+7.6- Lead
- 18,913
- Total
- 249,817
- vs nation
- D+0.3
- Turnout
- —
KerryDemocratic53.7%125,178BushRepublican45.3%105,603OtherAll other candidates1.1%2,516
D+8.4- Lead
- 19,575
- Total
- 233,297
- vs nation
- D+10.8
- Turnout
- —
GoreDemocratic54.5%115,376BushRepublican39.1%82,751NaderGreen5.2%11,021
D+15.4- Lead
- 32,625
- Total
- 211,577
- vs nation
- D+14.9
- Turnout
- —
ClintonDemocratic54.7%106,072DoleRepublican33.3%64,626PerotReform10.7%20,808
D+21.4- Lead
- 41,446
- Total
- 194,011
- vs nation
- D+12.8
- Turnout
- —
Key facts
- 2024 presidential margin
- D+8.8MIT Election Lab
- Population
- 535,0752024 5-year
- Population density
- 813 / sq mi2024 5-year · TIGER/Line
- Land area
- 659 sq miTIGER/Line
- Median household income
- $114,2012024 5-year
- White (non-Hispanic)
- 76.1%2024 5-year
- Black
- 7.8%2024 5-year
- Hispanic / Latino
- 4.9%2024 5-year
- Peak Democratic margin
- D+36.6 in 1964MIT Election Lab
- Peak Republican margin
- R+57.1 in 1896MIT Election Lab
- Most similar
- Essex County, MA · twin score 92.8
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
- 75.2%303,782 participants ÷ 404,008 CVAP
- 2020→2022 drop-off
- +23.7 ptsPresidential-dependent
- Drop-off versus state
- +0.1 ptsPositive means a larger decline than the statewide pattern
- Mechanical 2026 scenario
- 51.5%–56.5%Recent-cycle and two-cycle persistence scenarios; not a forecast
| Election | Participants | CVAP | Turnout | Quality |
|---|---|---|---|---|
| 2016 · Presidential | 275,506 | 376,919 | 73.1% | B/A |
| 2018 · Midterm | 227,326 | 382,005 | 59.5% | B/A |
| 2020 · Presidential | 303,870 | 389,872 | 77.9% | B/A |
| 2022 · Midterm | 216,708 | 399,756 | 54.2% | B/A |
| 2024 · Presidential | 303,782 | 404,008 | 75.2% | B/A |
Sources and methods
- 2016: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:aggregated; allocation share 0.0%; series 292/111.
- 2018: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:aggregated; allocation share 0.0%; series 296/138.
- 2020: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:aggregated; allocation share 0.0%; series 300/2.
- 2022: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:aggregated; allocation share 0.0%; series 305/183.
- 2024: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:aggregated; allocation share 0.0%; series 310/228.
presidential history
Party record book
Plymouth County, MA · 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
Lyndon B. Johnson1964
68.1%
82,007 votes · D+36.6
Runner-up · Joe Biden, 2020 · 57.1%
Republican
William McKinley1896
76.5%
13,405 votes · R+57.1
Runner-up · Warren G. Harding, 1920 · 73.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
173,630votes
57.1% of the vote · D+17.2
Runner-up · Kamala Harris, 2024 · 159,962 votes
Republican
Donald Trump2024
133,544votes
44.5% of the vote · D+8.8
Runner-up · Donald Trump, 2020 · 121,227 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
George McGovern1972
+18.4pts D vs U.S.
Place R+4.7 · U.S. R+23.2
Runner-up · Al Gore, 2000 · +14.9 pts
Republican
William McKinley1896
+51.1pts R vs U.S.
Place R+57.1 · U.S. R+6.1
Runner-up · Alf Landon, 1936 · +39.0 pts
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 | D | 57.8%166,403 | 42.2%121,605 | 288,008 |
| 2020 | D | 72.0%184,946 | 28.0%71,953 | 256,899 |
voter registration
Registered voters
By party of registration, over time
Party registration · 2025D+10.3
Presidential vote · 2024D+8.8
Registration and the presidential vote track closely here — within 1.5 points.
416,276 registered voters · 2025
domestic migration
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
+59 net domestic migration · 2025
20112025
Net +11,286 over 2011–2025 · gain loss
Arrivals reported $100,943 in average income, against $124,825 for residents who stayed — 19% lower. (IRS SOI, 2022–23)
The places arrivals came from lean D+25.7 on average — 17 points more Democratic-leaning than Plymouth County, MA itself (D+8.8).
Where arrivals came from lean of each source
- Norfolk County, MA3,104D+28.5
- Suffolk County, MA1,763D+52.1
- Bristol County, MA1,710D+1.3
- Middlesex County, MA873D+39.2
- Barnstable County, MA813D+20.6
- Worcester County, MA255D+10.0
Where departures went households, 2022–23
- Norfolk County, MA2,297
- Bristol County, MA2,268
- Suffolk County, MA1,167
- Middlesex County, MA669
- Barnstable County, MA556
- Providence County, RI298
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 | +195 |
| 2012 | −906 |
| 2013 | +1,200 |
| 2014 | +1,629 |
| 2015 | +729 |
| 2016 | +678 |
| 2017 | +1,058 |
| 2018 | +1,024 |
| 2019 | +1,105 |
| 2021 | +3,595 |
| 2022 | −584 |
| 2023 | +646 |
| 2024 | +858 |
| 2025 | +59 |
Plymouth County backed Republican presidential candidates for decades before trending Democratic in recent cycles; its 2024 D+8.8 margin reflects a steady suburban and exurban realignment along Massachusetts's South Shore.
Across the recorded series it reached a Democratic high of 36.6 points in 1964 and a Republican high of 57.1 points in 1896. Between 2020 and 2024 the county moved 8.4 points toward the Republican candidate; the 2024 margin was 8.8 points.
A population of 535,075, a 76% non-Hispanic-white share, and a median household income of $114,201 describe the county. The county's voting pattern over the last decade is most similar to that of Essex County and Washington County.
Political twins — counties
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Essex County
Massachusetts
92.8twin score
2000–2024 trajectory12-yr trend≠ % Latino
Washington County
Rhode Island
92.4twin score
2000–2024 trajectory≠ college share
Barnstable County
Massachusetts
91.4twin score
2004–2024 trajectory≠ median age
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.
Plymouth County, Massachusetts. Akashic. https://akashic.app/county/25023/. Accessed May 20, 2026. License: CC BY 4.0.
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Frequently asked questions
How did Plymouth County, Massachusetts vote in 2024?
In 2024, Plymouth County, Massachusetts voted Democratic by 8.8 points (D+8.8), carried by the Democratic candidate. Out of 300,129 votes cast, 159,962 went Democratic and 133,544 went Republican.
When did Plymouth County, Massachusetts last vote Republican?
The most recent presidential election in which Plymouth County, Massachusetts voted Republican was 1988.
How many people live in Plymouth County, Massachusetts?
Plymouth County, Massachusetts has a population of 535,075 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Plymouth County, Massachusetts?
Median household income in Plymouth County, Massachusetts is $114,201 — above the national median of $80,734. The Massachusetts state median is $103,960.
What is the political history of Plymouth County, Massachusetts?
Akashic tracks 38 presidential elections in Plymouth County, Massachusetts from 1876 to 2024. Of those, 12 went Democratic and 21 went Republican.