Penbrook leans heavily Democratic by roughly 40 points: about 70% of voters vote Democratic and 30% Republican.
About 66% of adults in Penbrook typically vote, near the U.S. average of about 62%. Among adults in Penbrook, ~46% vote Democratic, ~20% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How Penbrook compares
Among cities within 25 miles, Penbrook leans more Democratic than 135 of 136 neighbors.
Penbrook runs about 41 points more Democratic than Pennsylvania as a whole. Pennsylvania is roughly evenly split, and Penbrook sits clearly on the Democratic side.
Why Penbrook 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 Penbrook, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in Penbrook live in densely developed areas, about 64 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Penbrook sits in the top quarter (about 39%, above 86% of cities). Penbrook runs against the grain of Pennsylvania, a Democratic-leaning outlier in a roughly evenly split state.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Penbrook, 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 Penbrook looks the way it does
Turnout in Penbrook 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 Cities
- Progress, PA D+33
- Harrisburg, PA R+2
- Paxtang, PA D+25
- Colonial Park, PA D+18
- Steelton, PA D+40
- Wormleysburg, PA D+8
- Lemoyne, PA D+11
- Bressler, PA D+12
- New Cumberland, PA R+9
- Lower Allen, PA Even
Cities with Similar Populations
- Fiskdale, MA D+6
- Blue Springs, MS R+73
- Howe, IN R+61
- Patrick Springs, VA R+60
- Bunker Hill, IL R+47
- Cliffwood, NJ D+18
- Hollywood Park, TX R+21
- Combes, TX R+9
- Manito, IL R+47
- Vilas, NC R+18
All Local Stats
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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.