North Chelmsford leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.
About 87% of adults in North Chelmsford typically vote, above the U.S. average of about 62%. Among adults in North Chelmsford, ~48% vote Democratic, ~39% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How North Chelmsford compares
Among cities within 25 miles, North Chelmsford leans more Democratic than 54 of 147 neighbors.
North Chelmsford runs about 15 points more Republican than Massachusetts as a whole.
Why North Chelmsford leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for North Chelmsford, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 72% of residents in North Chelmsford live in densely developed areas, about 36 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and North Chelmsford sits in the top quarter (about 49%, above 93% of cities). A high never-married share predicts Democratic voting, and about 32% of adults in North Chelmsford have never been married, above 80% of cities.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; North Chelmsford, 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 North Chelmsford looks the way it does
Areas with strong routine healthcare access turn out at higher rates. North Chelmsford 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 75%, about 15 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Tyngsboro, MA Even
- Chelmsford, MA D+17
- Lowell, MA D+25
- Westford, MA D+25
- Graniteville, MA D+18
- Dracut, MA Even
- Dunstable, MA D+4
- North Billerica, MA D+6
- Carlisle, MA D+30
- Pelham, NH R+5
Cities with Similar Populations
- Fort Wainwright, AK R+22
- Sullivan, MO R+53
- Salem, IL R+52
- Rye Brook, NY D+19
- Southborough, MA D+31
- Liberty, NC R+45
- Arden Hills, MN D+31
- Live Oak, CA R+27
- Sutherlin, OR R+34
- Wingate, NC R+10
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.