Nonantum leans heavily Democratic by roughly 48 points: about 74% of voters vote Democratic and 26% Republican.
About 72% of adults in Nonantum typically vote, above the U.S. average of about 62%. Among adults in Nonantum, ~53% vote Democratic, ~19% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Nonantum compares
Among neighborhoods within 5 miles, Nonantum leans more Democratic than 8 of 37 neighbors.
Nonantum runs about 24 points more Democratic than Massachusetts as a whole.
Politics vary noticeably by block within Nonantum. The southwest side is the most Democratic-leaning (D+67) and the northeast side is the least Democratic-leaning (D+38), a spread of about 29 points.
Why Nonantum leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Nonantum, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 70% of adults in Nonantum hold a bachelor's degree, about 41 points above the U.S. average of 28%.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Nonantum, Newton, 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 Nonantum looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Nonantum 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 76%, about 16 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Bemis, Watertown Town, MA D+50
- Newton Corner, Newton, MA D+65
- West Newton, Newton, MA D+60
- Warrendale, Waltham, MA D+38
- Bleachery, Waltham, MA D+42
- South Side, Waltham, MA D+59
- Waverley Square, Belmont, MA D+62
- Faneuil, Brighton, MA D+62
- Cushing Square, Belmont, MA D+67
- East Watertown, Watertown Town, MA D+62
Neighborhoods with Similar Populations
- Hillyard, Spokane, WA R+4
- Elliot Park, Minneapolis, MN D+63
- Inverness, Dundalk, MD Even
- Olneyville, Providence, RI D+36
- Tallyn's Reach, Aurora, CO D+5
- Saint Claude, New Orleans, LA D+71
- Fort Sanders, Knoxville, TN D+36
- Saint Roch, New Orleans, LA D+79
- Raleigh Court, Roanoke, VA D+22
- Las Cruces, Laredo, TX D+12
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.