Summit Heights leans slightly Democratic by roughly 8 points: about 54% of voters vote Democratic and 46% Republican.
About 72% of adults in Summit Heights typically vote, above the U.S. average of about 62%. Among adults in Summit Heights, ~39% vote Democratic, ~33% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Summit Heights compares
Among neighborhoods within 5 miles, Summit Heights leans more Democratic than 1 of 5 neighbors.
Summit Heights runs about 12 points more Republican than California as a whole.
Why Summit Heights leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Summit Heights. The lean here lands roughly where demographic data alone would predict.
Homeownership and voter turnout
Places with homeowner-heavy households tend to turn out at a higher rate; Summit Heights, Fontana, CA sits in the top tenth nationally on this measure.
Why turnout in Summit Heights looks the way it does
Homeowners vote more often than renters. About 93% of households in Summit Heights own their home, about 31 points above the California average of 62%. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Hunter's Ridge, Fontana, CA R+2
- Rancho Fontana, Fontana, CA D+9
- West End, Fontana, CA D+13
- Downtown Fontana, Fontana, CA D+20
- Victoria Gardens, Rancho Cucamonga, CA D+11
- Downtown Rialto, Rialto, CA D+28
- Southridge Village, Fontana, CA D+17
- Muscoy, San Bernardino, CA D+20
- Terrace, San Bernardino, CA D+23
- Yerdemont, San Bernardino, CA Even
Neighborhoods with Similar Populations
- Westland Terrace, Pine Hills, FL D+70
- Belmont, Downers Grove, IL D+19
- Downtown East, Minneapolis, MN D+65
- Downtown Grand Forks, Grand Forks, ND D+12
- Coquina Key, St. Petersburg, FL D+35
- Westbury, Lehi, UT R+25
- Bluemound Heights, Milwaukee, WI D+36
- 45th and Moncrief, Jacksonville, FL D+78
- Peacock Village, Peoria, AZ R+17
- Downtown Conneaut, Conneaut, OH R+19
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.