15005 leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% Republican.
About 88% of adults in 15005 typically vote, above the U.S. average of about 62%. Among adults in 15005, ~35% vote Democratic, ~53% Republican, and ~12% don't vote. The map below shows estimated turnout by block group.
How 15005 compares
Among zip codes within 15 miles, 15005 leans more Republican than 30 of 45 neighbors.
15005 runs about 18 points more Republican than Pennsylvania as a whole.
Politics vary noticeably by block within 15005. The east side is the most Republican-leaning (R+25) and the north side is the least Republican-leaning (R+15), a spread of about 11 points.
Why 15005 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 15005. The lean here lands roughly where demographic data alone would predict.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; 15005, PA sits in the top tenth nationally on this measure.
Why turnout in 15005 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 15005 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%. Homeowners vote more often than renters, and about 88% of households in 15005 own their home, above 81% of zip codes. High high-school completion lines up with higher turnout, and about 99% of adults in 15005 have completed high school, above 97% 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.