Pleasant Hills leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.
About 87% of adults in Pleasant Hills typically vote, above the U.S. average of about 62%. Among adults in Pleasant Hills, ~46% vote Democratic, ~41% Republican, and ~13% don't vote. The map below shows estimated turnout by block group.
How Pleasant Hills compares
Among cities within 25 miles, Pleasant Hills leans more Democratic than 197 of 257 neighbors.
Pleasant Hills runs about 8 points more Democratic than Pennsylvania as a whole.
Politics vary noticeably by neighborhood within Pleasant Hills. The northwest side is the most Democratic-leaning (D+17) and the east side is the least Democratic-leaning (Even), a spread of about 15 points.
Why Pleasant Hills 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 Pleasant Hills, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 93% of residents in Pleasant Hills live in densely developed areas, about 57 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Pleasant Hills sits in the top quarter (about 43%, above 90% of cities).
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Pleasant Hills, PA sits in the top tenth 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 Pleasant Hills looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Pleasant Hills 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%. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Baldwin, PA D+3
- Jefferson Hills, PA R+20
- Brentwood, PA D+14
- South Park Township, PA R+10
- Glassport, PA R+3
- Dravosburg, PA R+6
- Castle Shannon, PA D+10
- Bethel Park, PA D+5
- West Mifflin, PA D+5
- Clairton, PA D+41
Cities with Similar Populations
- Purcell, OK R+58
- Big Bear City, CA R+27
- Belpre, OH R+41
- Camp Pendleton, CA R+24
- Rapid Valley, SD R+39
- Lackland AFB, TX R+3
- Irvine, KY R+63
- Raymond, NH R+20
- Elburn, IL R+14
- Wilmington, IL R+32
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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.