02030 leans heavily Democratic by roughly 38 points: about 69% of voters vote Democratic and 31% Republican.
About 88% of adults in 02030 typically vote, above the U.S. average of about 62%. Among adults in 02030, ~61% vote Democratic, ~27% Republican, and ~12% don't vote. The map below shows estimated turnout by block group.
How 02030 compares
Among zip codes within 15 miles, 02030 leans more Democratic than 32 of 100 neighbors.
02030 runs about 13 points more Democratic than Massachusetts as a whole.
Why 02030 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 02030, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 85% of adults in 02030 hold a bachelor's degree, about 56 points above the U.S. average of 28%.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; 02030, MA sits in the top tenth nationally on this measure.
Why turnout in 02030 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 02030 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 82%, about 22 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 98% of households in 02030 own their home, compared to around 83% in nearby zip codes. High high-school completion lines up with higher turnout, and about 97% of adults in 02030 have completed high school, 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.