02457 is a Democratic stronghold. About 76% of voters here vote Democratic and 24% Republican.
About 46% of adults in 02457 typically vote, below the U.S. average of about 62%. Among adults in 02457, ~35% vote Democratic, ~11% Republican, and ~54% don't vote. The map below shows estimated turnout by block group.
How 02457 compares
Among zip codes within 15 miles, 02457 leans more Democratic than 57 of 107 neighbors.
02457 runs about 26 points more Democratic than Massachusetts as a whole.
Why 02457 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 02457, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 86% of adults in 02457 hold a bachelor's degree, about 57 points above the U.S. average of 28%. Dense areas vote Democratic, and 02457 sits in the top fifth on density (about 97%, above 93% of zip codes). A high never-married share predicts Democratic voting, and about 87% of adults in 02457 have never been married, in the top fraction of zip codes.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; 02457, MA sits in the top tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 02457 looks the way it does
Areas with low high-school completion turn out at lower rates. About 98% of adults in 02457 have completed high school, about 8 points above the U.S. average of 90%. Strong routine healthcare access lines up with higher turnout, and 02457 sits in the top quarter on routine-care measures. 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.