16159 leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 84% of adults in 16159 typically vote, above the U.S. average of about 62%. Among adults in 16159, ~25% vote Democratic, ~59% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How 16159 compares
Among zip codes within 15 miles, 16159 leans more Republican than 32 of 43 neighbors.
16159 runs about 38 points more Republican than Pennsylvania as a whole.
Politics vary noticeably by block within 16159. The south side is the most Republican-leaning (R+43) and the north side is the least Republican-leaning (R+33), a spread of about 10 points.
Why 16159 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 16159, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 87% of residents in 16159 drive to work alone, about 13 points above the U.S. average of 74%. A high family-household share predicts Republican voting, and about 74% of households in 16159 are family households, above 76% of zip codes.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 16159, PA sits above the national average 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 16159 looks the way it does
Turnout in 16159 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.