02635 leans Democratic by roughly 20 points: about 60% of voters vote Democratic and 40% Republican.
About 86% of adults in 02635 typically vote, above the U.S. average of about 62%. Among adults in 02635, ~52% vote Democratic, ~34% Republican, and ~14% don't vote. The map below shows estimated turnout by block group.
How 02635 compares
Among zip codes within 15 miles, 02635 leans more Democratic than 25 of 32 neighbors.
02635 runs about 5 points more Republican than Massachusetts as a whole.
Why 02635 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 02635, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 45% of adults in 02635 hold a bachelor's degree, about 16 points above the U.S. average of 28%.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; 02635, MA sits in the top tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in 02635 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 02635 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 76%, about 16 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 90% of households in 02635 own their home, above 86% 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.