01245 is a Democratic stronghold. About 79% of voters here vote Democratic and 21% Republican.
About 77% of adults in 01245 typically vote, above the U.S. average of about 62%. Among adults in 01245, ~61% vote Democratic, ~16% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How 01245 compares
Among zip codes within 15 miles, 01245 leans more Democratic than 20 of 21 neighbors.
01245 runs about 34 points more Democratic than Massachusetts as a whole.
Why 01245 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 01245, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 64% of adults in 01245 hold a bachelor's degree, about 36 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 36% of adults in 01245 have never been married, above 81% of zip codes.
Walkability and Republican lean
Places with a low walkability score tend to lean Republican; 01245, MA sits in the bottom 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 01245 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 01245 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 75%, about 15 points above the U.S. average of 60%. 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.