Willow Grove leans Democratic by roughly 28 points: about 64% of voters vote Democratic and 36% Republican.
About 84% of adults in Willow Grove typically vote, above the U.S. average of about 62%. Among adults in Willow Grove, ~54% vote Democratic, ~30% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How Willow Grove compares
Among cities within 25 miles, Willow Grove leans more Democratic than 189 of 251 neighbors.
Willow Grove runs about 30 points more Democratic than Pennsylvania as a whole. Pennsylvania is roughly evenly split, and Willow Grove sits clearly on the Democratic side.
Politics vary noticeably by neighborhood within Willow Grove. The south side is the most Democratic-leaning (D+54) and the southeast side is the least Democratic-leaning (D+15), a spread of about 38 points.
Why Willow Grove 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 Willow Grove, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 94% of residents in Willow Grove live in densely developed areas, about 58 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Willow Grove sits in the top quarter (about 44%, above 90% of cities). Willow Grove runs against the grain of Pennsylvania, a Democratic-leaning outlier in a roughly evenly split state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Willow Grove, PA sits in the top tenth nationally on this measure.
Why turnout in Willow Grove looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Willow Grove 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 70%, about 10 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 96% of adults in Willow Grove have completed high school, above 87% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Abington, PA D+36
- Dresher, PA D+31
- Hatboro, PA D+5
- Horsham, PA D+12
- Jenkintown, PA D+37
- Huntingdon Valley, PA D+5
- Bryn Athyn, PA D+23
- Glenside, PA D+45
- Oreland, PA D+26
- Wyncote, PA D+76
Cities with Similar Populations
- Heber City, UT R+34
- Nipomo, CA R+10
- Suitland, MD D+86
- World Golf Village, FL R+31
- Mukilteo, WA D+20
- Leesburg, GA R+37
- Bonaire, GA R+18
- Round Lake, IL D+12
- Bloomingdale, IL Even
- Cameron Park, CA R+17
Sources and methodology
Precinct-level voting records used to fit the model come from Pennsylvania Department of State, Bureau of 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.