01529 leans slightly Republican by roughly 14 points: about 43% of voters vote Democratic and 57% Republican.
About 80% of adults in 01529 typically vote, above the U.S. average of about 62%. Among adults in 01529, ~34% vote Democratic, ~45% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How 01529 compares
Among zip codes within 15 miles, 01529 leans more Republican than 40 of 47 neighbors.
01529 runs about 38 points more Republican than Massachusetts as a whole. Massachusetts leans Democratic overall, while 01529 is one of the few Republican-leaning pockets.
Politics vary noticeably by block within 01529. The north side is the most Republican-leaning (R+22) and the south side is the least Republican-leaning (R+8), a spread of about 14 points.
Why 01529 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 01529, not a ranked or complete list of what matters most.
01529 votes against the grain of Massachusetts. Massachusetts leans Democratic overall, while 01529 runs about 38 points more Republican. A high family-household share predicts Republican voting, and about 81% of households in 01529 are family households, above 93% of zip codes.
Park access and Republican lean
Places with low park coverage tend to lean Republican; 01529, MA sits in the bottom quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in 01529 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 01529 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 69%, about 9 points above the U.S. average of 60%. 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.