Perris Hills leans Democratic by roughly 26 points: about 63% of voters vote Democratic and 37% Republican.
About 34% of adults in Perris Hills typically vote, below the U.S. average of about 62%. Among adults in Perris Hills, ~22% vote Democratic, ~13% Republican, and ~65% don't vote. The map below shows estimated turnout by block group.
How Perris Hills compares
Among neighborhoods within 5 miles, Perris Hills leans more Democratic than 31 of 40 neighbors.
Perris Hills runs about 6 points more Democratic than California as a whole.
Why Perris Hills leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Perris Hills, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in Perris Hills live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 51% of adults in Perris Hills have never been married, above 84% of neighborhoods.
Preventive-care access and voter turnout
Places with limited routine preventive-care access tend to turn out at a lower rate; Perris Hills, San Bernardino, CA sits in the bottom 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 Perris Hills looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Perris Hills is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 47%, about 15 points below the California average of 62%. High food insecurity lines up with lower turnout, and about 35% of adults in Perris Hills report food insecurity, above 88% of neighborhoods. Low high-school completion lines up with lower turnout, and about 67% of adults in Perris Hills have completed high school, below 96% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- DMV, San Bernardino, CA D+27
- Seccombe Lane, San Bernardino, CA D+30
- East Valley, San Bernardino, CA D+25
- Pacific-Riverside, San Bernardino, CA D+21
- Wilson-Riverside, San Bernardino, CA D+18
- SBHS, San Bernardino, CA D+27
- Curtis, Highland, CA D+22
- Feldheym, San Bernardino, CA D+25
- Arrowview, San Bernardino, CA D+15
- Drnag, San Bernardino, CA D+13
Neighborhoods with Similar Populations
- The West Side, Eureka, CA D+37
- Lakeside-Lester Park, Duluth, MN D+39
- Old Savannah, Augusta, GA D+40
- Dixie Downs, St. George, UT R+30
- Hansen, Mountain House, CA D+15
- Northside, Kalamazoo, MI D+79
- Fort Concho, San Angelo, TX R+14
- Pawtuckett, Charlotte, NC D+46
- North Central Thousand Oaks, San Antonio, TX Even
- North Heights, Youngstown, OH D+57
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.