15333 leans heavily Republican by roughly 38 points: about 31% of voters vote Democratic and 69% Republican.
About 91% of adults in 15333 typically vote, above the U.S. average of about 62%. Among adults in 15333, ~28% vote Democratic, ~63% Republican, and ~9% don't vote. The map below shows estimated turnout by block group.
How 15333 compares
Among zip codes within 15 miles, 15333 leans more Republican than 34 of 66 neighbors.
15333 runs about 36 points more Republican than Pennsylvania as a whole.
Politics vary noticeably by block within 15333. The northwest side is the most Republican-leaning (R+46) and the east side is the least Republican-leaning (R+32), a spread of about 14 points.
Why 15333 leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in 15333. The lean here lands roughly where demographic data alone would predict.
Housing overcrowding and voter turnout
Places with low overcrowding tend to turn out at a higher rate; 15333, PA sits in the bottom quarter nationally on this measure.
Why turnout in 15333 looks the way it does
Turnout in 15333 sits close to the national pattern. 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.