16803 leans heavily Democratic by roughly 42 points: about 71% of voters vote Democratic and 29% Republican.
About 74% of adults in 16803 typically vote, above the U.S. average of about 62%. Among adults in 16803, ~52% vote Democratic, ~22% Republican, and ~26% don't vote. The map below shows estimated turnout by block group.
How 16803 compares
Among zip codes within 15 miles, 16803 is the most Democratic-leaning.
16803 runs about 44 points more Democratic than Pennsylvania as a whole. Pennsylvania is roughly evenly split, and 16803 sits clearly on the Democratic side.
Politics vary noticeably by block within 16803. The southeast side is the most Democratic-leaning (D+63) and the southwest side is the least Democratic-leaning (D+33), a spread of about 30 points.
Why 16803 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 16803, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 70% of adults in 16803 hold a bachelor's degree, about 42 points above the U.S. average of 28%. Dense areas vote Democratic, and 16803 sits in the top fifth on density (about 82%, above 84% of zip codes). 16803 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; 16803, 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 16803 looks the way it does
Areas with high high-school completion turn out at higher rates. About 97% of adults in 16803 have completed high school, about 6 points above the Pennsylvania average of 91%. 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.