03748 leans slightly Democratic by roughly 8 points: about 54% of voters vote Democratic and 46% Republican. These figures are model estimates: New Hampshire did not have precinct-level voting records available for training, so the numbers above come from demographic and health features rather than local ground truth.
About 83% of adults in 03748 typically vote, above the U.S. average of about 62%. Among adults in 03748, ~45% vote Democratic, ~38% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.
How 03748 compares
Among zip codes within 15 miles, 03748 leans more Democratic than 9 of 21 neighbors.
03748 runs about 5 points more Democratic than New Hampshire as a whole.
Politics vary noticeably by block within 03748. The west side is the most Democratic-leaning (D+17) and the southeast side is the least Democratic-leaning (Even), a spread of about 15 points.
Why 03748 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 03748, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 45% of adults in 03748 hold a bachelor's degree, about 16 points above the U.S. average of 28%.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; 03748, NH sits in the top quarter 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 03748 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 03748 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%. High high-school completion lines up with higher turnout, and about 96% of adults in 03748 have completed high school, above 84% 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 New Hampshire Secretary of State, Elections Division, 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. NH did not have precinct-level voting records available for training, so the figures here come from extrapolation across demographic, health, and land-use features rather than local ground truth. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.