Quincy leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 56% of adults in Quincy typically vote, below the U.S. average of about 62%. Among adults in Quincy, ~36% vote Democratic, ~20% Republican, and ~44% don't vote. The map below shows estimated turnout by block group.
How Quincy compares
Among cities within 25 miles, Quincy leans more Democratic than 82 of 142 neighbors.
Politically, Quincy sits close to the rest of Massachusetts.
Politics vary noticeably by neighborhood within Quincy. The southeast side is the most Democratic-leaning (D+31) and the northeast side is the least Democratic-leaning (D+10), a spread of about 21 points.
Why Quincy leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for Quincy, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 83% of residents in Quincy live in densely developed areas, about 47 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Quincy sits in the top quarter (about 50%, above 94% of cities). A high never-married share predicts Democratic voting, and about 42% of adults in Quincy have never been married, above 95% of cities.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Quincy, MA sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Quincy looks the way it does
Renters vote less often than owners. About 53% of households in Quincy rent, about 28 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 5% of homes in Quincy have more than one occupant per room, above 86% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Braintree Town, MA D+11
- Milton, MA D+45
- Mattapan, MA D+74
- Weymouth Town, MA D+14
- Hyde Park, MA D+59
- Boston, MA D+30
- Randolph, MA D+49
- Hingham, MA D+28
- Roslindale, MA D+61
- Jamaica Plain, MA D+71
Cities with Similar Populations
- Compton, CA D+53
- McDonough, GA D+22
- Plainfield, IL D+4
- Baytown, TX R+4
- Kent, WA D+28
- Lafayette, IN Even
- Wichita Falls, TX R+26
- Lexington, SC R+36
- Duluth, MN D+31
- Merced, CA D+6
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Sources and methodology
Precinct-level voting records used to fit the model come from Massachusetts Secretary of the Commonwealth, Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.