Hyannis leans Democratic by roughly 18 points: about 59% of voters vote Democratic and 41% Republican.
About 65% of adults in Hyannis typically vote, near the U.S. average of about 62%. Among adults in Hyannis, ~38% vote Democratic, ~27% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How Hyannis compares
Hyannis runs about 7 points more Republican than Massachusetts as a whole.
Politics vary noticeably by block within Hyannis. The east side is the most Democratic-leaning (D+26) and the northwest side is the least Democratic-leaning (D+13), a spread of about 14 points.
Why Hyannis leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Hyannis. The lean here lands roughly where demographic data alone would predict.
Cancer-screening access and voter turnout
Places with high colon-cancer-screening access tend to turn out at a higher rate; Hyannis, Barnstable Town, MA sits above the national average on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in Hyannis looks the way it does
Turnout in Hyannis 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 Neighborhoods
- Hatchville, East Falmouth, MA D+17
- Teaticket, East Falmouth, MA D+32
- North Plymouth, Plymouth, MA D+16
- South Duxbury, Duxbury, MA D+19
- Burrage, Hanson, MA Even
- Steep Brook, Fall River, MA Even
- Highlands-Providence, Fall River, MA R+4
- Flint Village, Fall River, MA Even
- North End, Fall River, MA D+4
- Lower Highlands, Fall River, MA D+10
Neighborhoods with Similar Populations
- East Oak Hill, Austin, TX D+41
- East Cambridge, Cambridge, MA D+65
- South End, Burlington, VT D+68
- Darlington, Pawtucket, RI D+22
- South Lake Union, Seattle, WA D+57
- Atwater Village, Los Angeles, CA D+53
- Nevin, Los Angeles, CA D+45
- Otay Mesa West, San Diego, CA D+20
- Naglee Park, San Jose, CA D+53
- Gold Coast, Alameda, CA D+64
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.