15009 leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 89% of adults in 15009 typically vote, above the U.S. average of about 62%. Among adults in 15009, ~37% vote Democratic, ~52% Republican, and ~11% don't vote. The map below shows estimated turnout by block group.
How 15009 compares
Among zip codes within 15 miles, 15009 leans more Republican than 11 of 37 neighbors.
15009 runs about 15 points more Republican than Pennsylvania as a whole.
Politics vary noticeably by block within 15009. The east side runs the most Democratic (D+4) and the northwest side runs the most Republican (R+29), a spread of about 33 points.
Why 15009 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 15009. The lean here lands roughly where demographic data alone would predict.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 15009, PA sits in the top quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in 15009 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 15009 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 15009 have completed high school, above 86% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
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.