02169 leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 56% of adults in 02169 typically vote, below the U.S. average of about 62%. Among adults in 02169, ~36% vote Democratic, ~20% Republican, and ~44% don't vote. The map below shows estimated turnout by block group.
How 02169 compares
Among zip codes within 15 miles, 02169 leans more Democratic than 32 of 102 neighbors.
Politically, 02169 sits close to the rest of Massachusetts.
Politics vary noticeably by block within 02169. The north side is the most Democratic-leaning (D+34) and the northeast side is the least Democratic-leaning (D+12), a spread of about 21 points.
Why 02169 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 02169, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 85% of residents in 02169 live in densely developed areas, about 49 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and 02169 sits in the top quarter (about 49%, above 89% of zip codes). A high never-married share predicts Democratic voting, and about 41% of adults in 02169 have never been married, above 88% of zip codes.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 02169, MA sits in the top 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 02169 looks the way it does
Renters vote less often than owners. About 58% of households in 02169 rent, about 33 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 5% of homes in 02169 have more than one occupant per room, above 87% 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.