01370 leans heavily Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.
About 87% of adults in 01370 typically vote, above the U.S. average of about 62%. Among adults in 01370, ~57% vote Democratic, ~31% Republican, and ~12% don't vote. The map below shows estimated turnout by block group.
How 01370 compares
Among zip codes within 15 miles, 01370 leans more Democratic than 19 of 31 neighbors.
01370 runs about 6 points more Democratic than Massachusetts as a whole.
Politics vary noticeably by block within 01370. The south side is the most Democratic-leaning (D+43) and the northwest side is the least Democratic-leaning (D+13), a spread of about 30 points.
Why 01370 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 01370, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 47% of adults in 01370 hold a bachelor's degree, about 19 points above the U.S. average of 28%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 01370, MA sits in the top tenth nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 01370 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 01370 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 72%, about 12 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.