15033 leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 61% of adults in 15033 typically vote, near the U.S. average of about 62%. Among adults in 15033, ~28% vote Democratic, ~33% Republican, and ~39% don't vote. The map below shows estimated turnout by block group.
How 15033 compares
Among zip codes within 15 miles, 15033 leans more Republican than 14 of 93 neighbors.
15033 runs about 5 points more Republican than Pennsylvania as a whole.
Politics vary noticeably by block within 15033. The east side runs the most Democratic (Even) and the northeast side runs the most Republican (R+13), a spread of about 15 points.
Why 15033 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 15033, not a ranked or complete list of what matters most.
15033 votes Republican even though it is densely developed (about 75%, far above the Pennsylvania average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Low college attainment predicts Republican voting, and 15033 sits in the bottom quarter (about 13%, below 87% of zip codes).
Homeownership and voter turnout
Places with renter-heavy households tend to turn out at a lower rate; 15033, PA sits in the bottom tenth nationally on this measure.
Why turnout in 15033 looks the way it does
Renters vote less often than owners. About 45% of households in 15033 rent, about 20 points above the U.S. average of 25%. 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.