18335 leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% Republican.
About 75% of adults in 18335 typically vote, above the U.S. average of about 62%. Among adults in 18335, ~30% vote Democratic, ~45% Republican, and ~25% don't vote. The map below shows estimated turnout by block group.
How 18335 compares
Among zip codes within 15 miles, 18335 leans more Republican than 21 of 26 neighbors.
18335 runs about 17 points more Republican than Pennsylvania as a whole.
Politics vary noticeably by block within 18335. The east side runs the most Democratic (D+10) and the northwest side runs the most Republican (R+31), a spread of about 41 points.
Why 18335 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 18335, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 84% of residents in 18335 drive to work alone, about 10 points above the U.S. average of 74%.
Housing overcrowding and voter turnout
Places with low overcrowding tend to turn out at a higher rate; 18335, PA sits in the bottom tenth nationally on this measure.
Why turnout in 18335 looks the way it does
Turnout in 18335 sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. 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.