Glen Rock leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 84% of adults in Glen Rock typically vote, above the U.S. average of about 62%. Among adults in Glen Rock, ~25% vote Democratic, ~59% Republican, and ~16% don't vote. The map below shows estimated turnout by block group.
How Glen Rock compares
Among cities within 25 miles, Glen Rock leans more Republican than 58 of 111 neighbors.
Glen Rock runs about 38 points more Republican than Pennsylvania as a whole.
Politics vary noticeably by neighborhood within Glen Rock. The west side is the most Republican-leaning (R+55) and the east side is the least Republican-leaning (R+36), a spread of about 19 points.
Why Glen Rock 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 Glen Rock, not a ranked or complete list of what matters most.
Glen Rock votes Republican even though it is densely developed (about 34%, above 82% of cities). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 75% of households in Glen Rock are family households, above 76% of cities.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Glen Rock, PA sits in the top quarter 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 Glen Rock looks the way it does
Turnout in Glen Rock 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
- Rockville, PA R+54
- Railroad, PA R+26
- Shrewsbury, PA R+16
- New Freedom, PA R+25
- Seven Valleys, PA R+36
- Loganville, PA R+20
- Glenville, PA R+51
- Freeland, MD R+26
- Jacobus, PA R+20
- Winterstown, PA R+56
Cities with Similar Populations
- Willcox, AZ R+37
- Raymond, MS R+10
- Otis Orchards, WA R+34
- Coloma, MI R+22
- Independence, OH R+17
- Boyne City, MI R+19
- Negaunee, MI R+12
- Moundville, AL R+16
- Sulphur, OK R+55
- St. James, MO R+48
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.