03755 is a Democratic stronghold. About 79% of voters here vote Democratic and 21% 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 67% of adults in 03755 typically vote, near the U.S. average of about 62%. Among adults in 03755, ~53% vote Democratic, ~14% Republican, and ~33% don't vote. The map below shows estimated turnout by block group.
How 03755 compares
Among zip codes within 15 miles, 03755 is the most Democratic-leaning.
03755 runs about 56 points more Democratic than New Hampshire as a whole.
Politics vary noticeably by block within 03755. The southwest side is the most Democratic-leaning (D+73) and the southeast side is the least Democratic-leaning (D+31), a spread of about 42 points.
Why 03755 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 03755, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 88% of adults in 03755 hold a bachelor's degree, about 60 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 54% of adults in 03755 have never been married, above 96% of zip codes.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 03755, NH sits in the top quarter nationally on this measure.
Why turnout in 03755 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 03755 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 77%, about 17 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 99% of adults in 03755 have completed high school, above 97% 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.