Garnet Valley is a true toss-up. About 50% of voters here vote Democratic and 50% Republican.
About 98% of adults in Garnet Valley typically vote, above the U.S. average of about 62%. Among adults in Garnet Valley, ~49% vote Democratic, ~49% Republican, and ~2% don't vote. The map below shows estimated turnout by block group.
How Garnet Valley compares
Among cities within 25 miles, Garnet Valley sits roughly in the middle of the political spectrum, with 158 neighbors leaning further in the place's direction and 64 leaning the other way.
Politically, Garnet Valley sits close to the rest of Pennsylvania.
Why Garnet Valley leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Garnet Valley. The lean here lands roughly where demographic data alone would predict.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Garnet Valley, 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 Garnet Valley looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Garnet Valley 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 73%, about 13 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 96% of households in Garnet Valley own their home, compared to around 79% in nearby cities. High high-school completion lines up with higher turnout, and about 98% of adults in Garnet Valley have completed high school, above 94% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Boothwyn, PA D+5
- Arden, DE D+31
- Ardentown, DE D+31
- Marcus Hook, PA D+4
- Chester Heights, PA D+13
- Aston, PA R+5
- Claymont, DE D+42
- Glen Mills, PA D+4
- Thornton, PA D+11
- Trainer, PA D+16
Cities with Similar Populations
- Wapato, WA D+14
- Brookhaven, PA D+17
- Burr Ridge, IL R+3
- Kelseyville, CA D+2
- Hollywood, MD R+26
- Lincoln Park, NJ R+16
- Conley, GA D+78
- Romeo, MI R+32
- Erwin, TN R+54
- Fairfield, IA D+14
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.