19425 leans Democratic by roughly 18 points: about 59% of voters vote Democratic and 41% Republican.
About 96% of adults in 19425 typically vote, above the U.S. average of about 62%. Among adults in 19425, ~57% vote Democratic, ~39% Republican, and ~4% don't vote. The map below shows estimated turnout by block group.
How 19425 compares
Among zip codes within 15 miles, 19425 leans more Democratic than 23 of 38 neighbors.
19425 runs about 19 points more Democratic than Pennsylvania as a whole. Pennsylvania is roughly evenly split, and 19425 sits clearly on the Democratic side.
Politics vary noticeably by block within 19425. The southwest side is the most Democratic-leaning (D+25) and the northeast side is the least Democratic-leaning (D+8), a spread of about 16 points.
Why 19425 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 19425, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 77% of adults in 19425 hold a bachelor's degree, about 49 points above the U.S. average of 28%. 19425 runs against the grain of Pennsylvania, a Democratic-leaning outlier in a roughly evenly split state.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 19425, PA sits in the top tenth nationally 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 19425 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 19425 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 78%, about 18 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in 19425 have completed high school, above 94% of zip codes. 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.