Fallbrook leans slightly Republican by roughly 8 points: about 46% of voters vote Democratic and 54% Republican.
About 63% of adults in Fallbrook typically vote, near the U.S. average of about 62%. Among adults in Fallbrook, ~29% vote Democratic, ~34% Republican, and ~37% don't vote. The map below shows estimated turnout by block group.
How Fallbrook compares
Among cities within 25 miles, Fallbrook leans more Republican than 9 of 31 neighbors.
Fallbrook runs about 28 points more Republican than California as a whole. California leans Democratic overall, while Fallbrook is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Fallbrook. The west side runs the most Democratic (D+13) and the southwest side runs the most Republican (R+23), a spread of about 36 points.
Why Fallbrook 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 Fallbrook, not a ranked or complete list of what matters most.
Fallbrook votes Republican even though it is densely developed (about 71%, modestly above the California average of 58%). State and regional patterns outweigh the Democratic lean that density usually predicts here. A high family-household share predicts Republican voting, and about 79% of households in Fallbrook are family households, above 88% of cities. Fallbrook 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; Fallbrook, CA sits in the top tenth nationally on this measure.
Why turnout in Fallbrook looks the way it does
Turnout in Fallbrook 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
- Rainbow, CA R+22
- Bonsall, CA R+15
- Camp Pendleton North, CA R+25
- Chappo, CA R+25
- Pala, CA R+20
- Oceanside, CA D+9
- Vista, CA D+10
- Temecula, CA R+11
- Valley Center, CA R+25
- Sunny Vista, CA D+15
Cities with Similar Populations
- Concord, NH D+21
- Taylors, SC R+30
- Johnstown, PA R+21
- Hutchinson, KS R+28
- Winter Springs, FL R+14
- Beloit, WI D+12
- Lake Mary, FL R+9
- Greenacres, FL D+11
- Middletown, DE D+16
- Issaquah, WA D+42
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.