New Cumberland leans slightly Republican by roughly 10 points: about 45% of voters vote Democratic and 55% Republican.
About 82% of adults in New Cumberland typically vote, above the U.S. average of about 62%. Among adults in New Cumberland, ~37% vote Democratic, ~45% Republican, and ~18% don't vote. The map below shows estimated turnout by block group.
How New Cumberland compares
Among cities within 25 miles, New Cumberland leans more Republican than 25 of 140 neighbors.
New Cumberland runs about 7 points more Republican than Pennsylvania as a whole.
Politics vary noticeably by neighborhood within New Cumberland. The northeast side runs the most Democratic (D+9) and the southwest side runs the most Republican (R+29), a spread of about 38 points.
Why New Cumberland leans the way it does
This analysis examined 14,881 data points per city to find what predicts political lean and turnout. The items below are a few correlations that stood out for New Cumberland, not a ranked or complete list of what matters most.
New Cumberland votes Republican even though it is densely developed (about 80%, far above the Pennsylvania average of 33%). State and regional patterns outweigh the Democratic lean that density usually predicts here.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; New Cumberland, PA sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in New Cumberland looks the way it does
Turnout in New Cumberland 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 Cities
- Lower Allen, PA Even
- Steelton, PA D+40
- Lemoyne, PA D+11
- Bressler, PA D+12
- Paxtang, PA D+25
- Camp Hill, PA D+10
- Wormleysburg, PA D+8
- Lewisberry, PA R+38
- Shiremanstown, PA Even
- Penbrook, PA D+39
Cities with Similar Populations
- Casa de Oro-Mount Helix, CA D+11
- Beachwood, OH D+45
- Kaufman, TX R+41
- Fruitland Park, FL R+35
- Bogalusa, LA R+13
- Port Townsend, WA D+65
- Bellevue, WI R+9
- Druid Hills, GA D+61
- Grandview, WA Even
- South Sioux City, NE R+4
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.