01810 leans heavily Democratic by roughly 32 points: about 66% of voters vote Democratic and 34% Republican.
About 84% of adults in 01810 typically vote, above the U.S. average of about 62%. Among adults in 01810, ~55% vote Democratic, ~29% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How 01810 compares
Among zip codes within 15 miles, 01810 leans more Democratic than 46 of 50 neighbors.
01810 runs about 8 points more Democratic than Massachusetts as a whole.
Politics vary noticeably by block within 01810. The east side is the most Democratic-leaning (D+45) and the west side is the least Democratic-leaning (D+23), a spread of about 22 points.
Why 01810 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 01810, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 76% of adults in 01810 hold a bachelor's degree, about 47 points above the U.S. average of 28%. Density combined with diversity predicts Democratic voting, and non-Hispanic white share in 01810 is about 71%, compared to around 52% in nearby zip codes.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 01810, MA sits in the top quarter 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 01810 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 01810 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 79%, about 19 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in 01810 have completed high school, above 93% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.