15644 leans Republican by roughly 20 points: about 40% of voters vote Democratic and 60% Republican.
About 79% of adults in 15644 typically vote, above the U.S. average of about 62%. Among adults in 15644, ~32% vote Democratic, ~47% Republican, and ~21% don't vote. The map below shows estimated turnout by block group.
How 15644 compares
Among zip codes within 15 miles, 15644 leans more Republican than 21 of 74 neighbors.
15644 runs about 19 points more Republican than Pennsylvania as a whole.
Politics vary noticeably by block within 15644. The northwest side is the most Republican-leaning (R+27) and the west side is the least Republican-leaning (R+6), a spread of about 21 points.
Why 15644 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 15644, not a ranked or complete list of what matters most.
15644 votes Republican even though it is densely developed (about 70%, far above the Pennsylvania average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; 15644, 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 15644 looks the way it does
Turnout in 15644 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.