02116 is a Democratic stronghold. About 81% of voters here vote Democratic and 19% Republican.
About 58% of adults in 02116 typically vote, near the U.S. average of about 62%. Among adults in 02116, ~47% vote Democratic, ~11% Republican, and ~42% don't vote. The map below shows estimated turnout by block group.
How 02116 compares
Among zip codes within 15 miles, 02116 leans more Democratic than 84 of 110 neighbors.
02116 runs about 36 points more Democratic than Massachusetts as a whole.
Politics vary noticeably by block within 02116. The south side is the most Democratic-leaning (D+72) and the northeast side is the least Democratic-leaning (D+52), a spread of about 20 points.
Why 02116 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 02116, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 02116 live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 02116 sits in the top quarter (about 78%, in the top fraction of zip codes). A high never-married share predicts Democratic voting, and about 56% of adults in 02116 have never been married, above 97% of zip codes.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 02116, 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 02116 looks the way it does
Renters vote less often than owners. About 66% of households in 02116 rent, about 41 points above the U.S. average of 25%. Strong routine healthcare access lines up with higher turnout, and 02116 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.