Centerville leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.
About 89% of adults in Centerville typically vote, above the U.S. average of about 62%. Among adults in Centerville, ~49% vote Democratic, ~40% Republican, and ~11% don't vote. The map below shows estimated turnout by block group.
How Centerville compares
Among cities within 25 miles, Centerville leans more Democratic than 19 of 67 neighbors.
Centerville runs about 14 points more Republican than Massachusetts as a whole.
Politics vary noticeably by neighborhood within Centerville. The east side is the most Democratic-leaning (D+17) and the north side is the least Democratic-leaning (D+4), a spread of about 13 points.
Why Centerville 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 Centerville, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 77% of residents in Centerville live in densely developed areas, about 40 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Centerville sits in the top quarter (about 40%, above 87% of cities).
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Centerville, MA sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in Centerville looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Centerville is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 73%, about 13 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Centerville have completed high school, above 87% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Osterville, MA D+22
- Hyannis Port, MA D+12
- Barnstable Town, MA D+17
- West Barnstable, MA D+9
- Marstons Mills, MA D+9
- Barnstable, MA D+16
- Cotuit, MA D+20
- West Yarmouth, MA D+11
- East Sandwich, MA D+8
- Yarmouth Port, MA D+20
Cities with Similar Populations
- La Feria, TX R+4
- Brazoria, TX R+51
- Littlestown, PA R+44
- Keokuk, IA R+19
- Shallotte, NC R+40
- Lyons, IL D+14
- Saddlebrooke, AZ R+8
- Lincoln City, OR D+17
- Tallassee, AL R+52
- Sheboygan Falls, WI R+22
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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.