Walnut Valley leans slightly Democratic by roughly 8 points: about 54% of voters vote Democratic and 46% Republican.
About 60% of adults in Walnut Valley typically vote, near the U.S. average of about 62%. Among adults in Walnut Valley, ~32% vote Democratic, ~27% Republican, and ~41% don't vote. The map below shows estimated turnout by block group.
How Walnut Valley compares
Walnut Valley runs about 11 points more Republican than California as a whole.
Why Walnut Valley 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 Walnut Valley, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 55% of adults in Walnut Valley hold a bachelor's degree, about 26 points above the U.S. average of 28%.
Foreign-born share and voter turnout
Places with a foreign-born-heavy population tend to turn out in mixed patterns; Walnut Valley, Diamond Bar, CA sits in the top tenth nationally on this measure.
Why turnout in Walnut Valley looks the way it does
Turnout in Walnut Valley 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 Neighborhoods
- Downtown Pomona, Pomona, CA D+36
- Edison Historic District, Pomona, CA D+36
- Brea-Olinda, Brea, CA R+3
- Covina-Valley, Covina, CA D+18
- Charter Oak, Covina, CA D+9
- La Habra City, La Habra, CA D+7
- Bassett, West Puente Valley, CA D+31
- Lowell, La Habra, CA Even
- Downtown Fullerton, Fullerton, CA D+23
- Northeast, Anaheim, CA D+16
Neighborhoods with Similar Populations
- Silver Lake, Los Angeles, CA D+66
- Inner Richmond, San Francisco, CA D+68
- Financial District, Manhattan, NY D+58
- Westland, Galloway, OH Even
- TCU-West Cliff, Fort Worth, TX D+6
- Hyde Park, Los Angeles, CA D+70
- Central City, Los Angeles, CA D+45
- North Torrance, Torrance, CA D+20
- Kalihi-Palama, Honolulu, HI D+11
- Frankford, Philadelphia, PA D+56
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.