02119 is a Democratic stronghold. About 83% of voters here vote Democratic and 17% Republican.
About 44% of adults in 02119 typically vote, below the U.S. average of about 62%. Among adults in 02119, ~37% vote Democratic, ~7% Republican, and ~56% don't vote. The map below shows estimated turnout by block group.
How 02119 compares
Among zip codes within 15 miles, 02119 leans more Democratic than 95 of 111 neighbors.
02119 runs about 41 points more Democratic than Massachusetts as a whole.
Politics vary noticeably by block within 02119. The northwest side is the most Democratic-leaning (D+78) and the east side is the least Democratic-leaning (D+54), a spread of about 24 points.
Why 02119 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 02119, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in 02119 live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 58% of adults in 02119 have never been married, above 98% of zip codes.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; 02119, 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 02119 looks the way it does
Renters vote less often than owners. About 70% of households in 02119 rent, about 45 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 34% of adults in 02119 report food insecurity, above 96% of zip codes. High-crime urban areas turn out at lower rates, and 02119 sits in the top 15% on a violent-crime measure. 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.