17027 leans Democratic by roughly 24 points: about 62% of voters vote Democratic and 38% Republican.
About 63% of adults in 17027 typically vote, near the U.S. average of about 62%. Among adults in 17027, ~39% vote Democratic, ~24% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.
How 17027 compares
Among zip codes within 15 miles, 17027 leans more Democratic than 26 of 34 neighbors.
17027 runs about 26 points more Democratic than Pennsylvania as a whole. Pennsylvania is roughly evenly split, and 17027 sits clearly on the Democratic side.
Politics vary noticeably by block within 17027. The east side runs the most Democratic (D+30) and the south side runs the most Republican (R+36), a spread of about 65 points.
Why 17027 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 17027, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 66% of adults in 17027 hold a bachelor's degree, about 38 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 89% of adults in 17027 have never been married, in the top fraction of zip codes. 17027 runs against the grain of Pennsylvania, a Democratic-leaning outlier in a roughly evenly split state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; 17027, PA sits in the top quarter nationally on this measure.
Why turnout in 17027 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 17027 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 74%, about 14 points above the U.S. average of 60%. 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.