02163 is a Democratic stronghold. About 80% of voters here vote Democratic and 20% Republican.
About 37% of adults in 02163 typically vote, below the U.S. average of about 62%. Among adults in 02163, ~30% vote Democratic, ~7% Republican, and ~63% don't vote. The map below shows estimated turnout by block group.
How 02163 compares
Among zip codes within 15 miles, 02163 leans more Democratic than 83 of 110 neighbors.
02163 runs about 36 points more Democratic than Massachusetts as a whole.
Why 02163 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 02163, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 96% of adults in 02163 hold a bachelor's degree, about 67 points above the U.S. average of 28%. Dense areas vote Democratic, and 02163 sits in the top fifth on density (more than 99%, in the top fraction of zip codes). A high never-married share predicts Democratic voting, and about 77% of adults in 02163 have never been married, in the top fraction of zip codes.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 02163, MA sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in 02163 looks the way it does
Renters vote less often than owners. More than 99% of households in 02163 rent, about 75 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 6% of homes in 02163 have more than one occupant per room, above 90% 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.