Hornbrook leans heavily Republican by roughly 40 points: about 30% of voters vote Democratic and 70% Republican.
About 55% of adults in Hornbrook typically vote, below the U.S. average of about 62%. Among adults in Hornbrook, ~16% vote Democratic, ~39% Republican, and ~45% don't vote. The map below shows estimated turnout by block group.
How Hornbrook compares
Among cities within 25 miles, Hornbrook leans more Republican than 6 of 10 neighbors.
Hornbrook runs about 60 points more Republican than California as a whole. California leans Democratic overall, while Hornbrook is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Hornbrook. The southeast side is the most Republican-leaning (R+47) and the north side is the least Republican-leaning (R+29), a spread of about 17 points.
Why Hornbrook 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 Hornbrook, not a ranked or complete list of what matters most.
Hornbrook votes against the grain of California. California leans Democratic overall, while Hornbrook runs about 60 points more Republican. Rural areas vote Republican, and Hornbrook sits in the bottom quarter on density (about 3%, below 91% of cities).
Population density and Republican lean
Places with low population density tend to lean Republican; Hornbrook, CA sits in the bottom quarter nationally on this measure.
Why turnout in Hornbrook looks the way it does
Crowded housing lines up with lower turnout. About 5% of homes in Hornbrook have more than one occupant per room, above 88% of cities. Low high-school completion lines up with lower turnout, and about 95% of adults in Hornbrook have completed high school, above 74% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Henley, CA R+45
- Little Shasta, CA R+48
- Lincoln, OR D+2
- Montague, CA R+46
- Yreka, CA R+23
- Mountain View, OR R+4
- Grenada, CA R+44
- Klamath River, CA R+31
- Ashland, OR D+50
- Mount Hebron, CA R+23
Cities with Similar Populations
- Blounts Creek, NC R+34
- Willseyville, NY R+21
- Murrayville, IL R+55
- Sedalia, NC R+3
- Dysart, PA R+56
- North Ferrisburgh, VT D+23
- Walhonding, OH R+66
- Gladbrook, IA R+41
- Weyerhaeuser, WI R+38
- West Cape May, NJ D+10
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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.