Chino Hills, CA Political Map | Democrat & Republican Areas in Chino Hills

By the BestNeighborhood data science team. Last updated May 2026.

Chino Hills is a true toss-up. About 48% of voters here vote Democratic and 52% Republican.

 

About 56% of adults in Chino Hills typically vote, below the U.S. average of about 62%. Among adults in Chino Hills, ~27% vote Democratic, ~29% Republican, and ~44% don't vote. The map below shows estimated turnout by block group.

How Chino Hills compares

Among cities within 25 miles, Chino Hills leans more Republican than 91 of 110 neighbors.

Chino Hills runs about 24 points more Republican than California as a whole. California leans Democratic overall, while Chino Hills is one of the few Republican-leaning pockets.

Politics vary noticeably by neighborhood within Chino Hills. The northeast side runs the most Democratic (D+12) and the southwest side runs the most Republican (R+16), a spread of about 28 points.

Why Chino Hills 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 Chino Hills, not a ranked or complete list of what matters most.

Chino Hills votes against the grain of California. California leans Democratic overall, while Chino Hills runs about 24 points more Republican.

Never-married share, developed land, and voter turnout

Places that combine a never-married-heavy adult population and a heavily developed built environment tend to turn out at a lower rate, as Chino Hills, CA does.

Why turnout in Chino Hills looks the way it does

Renters vote less often than owners. About 29% of households in Chino Hills rent, above 82% of cities. Crowded housing lines up with lower turnout, and about 4% of homes in Chino Hills have more than one occupant per room, above 82% of cities. Learn more about the findings and methodology on the political spectrum map.

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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.