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.
2012–20183 cycles · 2 audited
2018 turnout
75.4%2,852 participants ÷ 3,784 CVAP
2016→2018 drop-off
+12.5 ptsVolatile
Drop-off vs state
+2.3 ptsPositive means a larger decline than the statewide pattern
Participation by cycle
Presidential Midterm Derived, pre-2016
0%20%40%60%80%100%
75.4%
201220162018
Select a presidential cycle to show it on the map and results ledger above.
Cycle
Participants
CVAP
Turnout
Series
Quality
2018Mid
2,852
3,784 ± 272
75.4%
Audited
E/A
3,393
3,862 ± 252
87.9%
Audited
E/A
3,150
3,743
84.2%
Derived
—
Sources and methods
Audited cycles (2016, 2018) count total general-election participants against the same-year CVAP special tabulation, each cell carrying its own numerator and denominator quality grade. Derived cycles (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.
2018: numerator source 160, denominator source 157; estimated total ballots; preferred-county:block-reference-presidential-or-cvap-weight:v2; allocation share 100.0%; series 320/139.
2016: numerator source 160, denominator source 157; estimated total ballots; preferred-county:block-reference-presidential-or-cvap-weight:v2; allocation share 100.0%; series 319/133.
2012 (derived): Certified presidential returns · ACS 5-year CVAP (B05003); presidential votes cast — a floor on participation, not a ballot count.
presidential history
Party record book
Old Greenwich, CT · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
2004–2024 · 6 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Joe Biden2020
66.8%
2,661 votes · D+35.2
Runner-up · Hillary Clinton, 2016 · 63.0%
Republican
Mitt Romney2012
53.0%
1,671 votes · R+7.0
Runner-up · George W. Bush, 2004 · 48.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
2,661votes
66.8% of the vote · D+35.2
Runner-up · Kamala Harris, 2024 · 2,150 votes
Republican
Mitt Romney2012
1,671votes
53.0% of the vote · R+7.0
Runner-up · George W. Bush, 2004 · 1,645 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
Joe Biden2020
+30.8pts D vs U.S.
Place D+35.2 · U.S. D+4.5
Runner-up · Hillary Clinton, 2016 · +28.2 pts
Republican
Mitt Romney2012
+10.9pts R vs U.S.
Place R+7.0 · U.S. D+3.9
Runner-up · George W. Bush, 2004 · −4.0 pts
U.S. House elections · 2 House
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.
Old Greenwich · Akashic carries this place’s presidential nominating contests, but not at this place’s own grain.
Connecticut’s presidential primary returns are aggregated to the eight counties retired as county-equivalents in 2022. Akashic publishes the nine planning regions that replaced them, and their boundaries cross the old county lines. The presidential record elsewhere on this page crosses that boundary because a general-election county row carries each party’s votes, and votes can be apportioned and disclosed as an estimate. A primary county row carries a leader and a lead over the runner-up and nothing else: there is no per-candidate vote to apportion, and who led is not a quantity that can be weighted. So the record is complete and published — at Connecticut’s state contest, not at this grain. See Connecticut’s Democratic presidential primary.
Old Greenwich draws some of Connecticut's highest household incomes along its shoreline, and its small, affluent electorate has shifted notably toward Democratic margins in recent cycles despite its traditionally Republican suburban roots.
Across the recorded series it reached a Democratic high of 35.2 points in 2020 and a Republican high of 7.0 points in 2012. Between 2020 and 2024 the city moved 19.2 points toward the Republican candidate; the 2024 margin was 16.0 points.
A population of 6,936, a 78% non-Hispanic-white share, and a median household income of $250,001 describe the city. The city's voting pattern over the last decade is most similar to that of Riverside and Fair Haven.
Akashic
Political twins — cities
The cities 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.
In 2024, Old Greenwich, Connecticut voted Democratic by 16.0 points (D+16.0), carried by the Democratic candidate. Out of 3,753 votes cast, 2,150 went Democratic and 1,549 went Republican.
When did Old Greenwich, Connecticut last vote Republican?
The most recent presidential election in which Old Greenwich, Connecticut voted Republican was 2012.
How many people live in Old Greenwich, Connecticut?
Old Greenwich, Connecticut has a population of 6,936 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Old Greenwich, Connecticut?
Median household income in Old Greenwich, Connecticut is $250,001 — above the national median of $80,734. The Connecticut state median is $95,781.
What is the political history of Old Greenwich, Connecticut?
Akashic tracks 6 presidential elections in Old Greenwich, Connecticut from 2004 to 2024. Of those, 5 went Democratic and 1 went Republican.
