Quartz Hill leans Republican by roughly 16 points: about 42% of voters vote Democratic and 58% Republican.
About 71% of adults in Quartz Hill typically vote, above the U.S. average of about 62%. Among adults in Quartz Hill, ~30% vote Democratic, ~41% Republican, and ~29% don't vote. The map below shows estimated turnout by block group.
How Quartz Hill compares
Among cities within 25 miles, Quartz Hill leans more Republican than 10 of 18 neighbors.
Quartz Hill runs about 36 points more Republican than California as a whole. California leans Democratic overall, while Quartz Hill is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Quartz Hill. The south side is the most Republican-leaning (R+20) and the west side is the least Republican-leaning (R+9), a spread of about 11 points.
Why Quartz Hill 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 Quartz Hill, not a ranked or complete list of what matters most.
Quartz Hill votes Republican even though it is densely developed (about 89%, far above the California average of 58%). State and regional patterns outweigh the Democratic lean that density usually predicts here. Quartz Hill runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Quartz Hill, CA sits in the top tenth nationally on this measure.
Why turnout in Quartz Hill looks the way it does
Turnout in Quartz Hill 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
- Lancaster, CA D+14
- Leona Valley, CA R+39
- Palmdale, CA D+14
- Del Sur, CA R+33
- Acton, CA R+33
- Lake Hughes, CA R+27
- Agua Dulce, CA R+36
- Rosamond, CA R+19
- Sun Village, CA D+4
- Willow Springs, CA R+41
Cities with Similar Populations
- Poteau, OK R+57
- Hope, AR D+6
- Slatington, PA R+29
- Myrtle Grove, NC R+16
- Honey Brook, PA R+21
- Tillamook, OR R+18
- Trenton, FL R+66
- Fort Madison, IA R+22
- Milan, TN R+38
- Farmersville, CA R+6
All Local Stats
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Sources and methodology
Precinct-level voting records used to fit the model come from California Secretary of State, 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.