Coos County leans Republican by roughly 24 points: about 38% of voters vote Democratic and 62% 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 77% of adults in Coos County typically vote, above the U.S. average of about 62%. Among adults in Coos County, ~29% vote Democratic, ~48% Republican, and ~23% don't vote. The map below shows estimated turnout by block group.
How Coos County compares
Among counties within 50 miles, Coos County leans more Republican than 2 of 4 neighbors.
Coos County runs about 27 points more Republican than New Hampshire as a whole. New Hampshire is roughly evenly split, and Coos County sits clearly on the Republican side.
Politics vary noticeably by city within Coos County. The northeast side is the most Republican-leaning (R+40) and the southwest side is the least Republican-leaning (R+16), a spread of about 24 points.
Why Coos County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Coos County, not a ranked or complete list of what matters most.
Coos County votes against the grain of New Hampshire. New Hampshire is roughly evenly split, while Coos County runs about 27 points more Republican.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Coos County, NH sits above the national average on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Coos County looks the way it does
Turnout in Coos County sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Essex County, VT R+31
- Caledonia County, VT R+9
- Oxford County, ME R+25
- Orleans County, VT R+17
- Carroll County, NH R+2
- Grafton County, NH D+18
- Franklin County, ME R+18
- Orange County, VT Even
- Lamoille County, VT D+7
- Washington County, VT D+19
Counties with Similar Populations
- Titus County, TX R+40
- Amherst County, VA R+33
- Adams County, NE R+42
- Delta County, CO R+35
- Polk County, MN R+31
- Pontotoc County, MS R+65
- Gilmer County, GA R+59
- Clarendon County, SC R+8
- Lake County, MT R+21
- Huron County, MI R+42
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.