Orange, CA Political Map | Democrat & Republican Areas in Orange

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

Orange leans slightly Democratic by roughly 6 points: about 53% of voters vote Democratic and 47% Republican.

 

About 59% of adults in Orange typically vote, near the U.S. average of about 62%. Among adults in Orange, ~31% vote Democratic, ~28% Republican, and ~41% don't vote. The map below shows estimated turnout by block group.

How Orange compares

Among cities within 25 miles, Orange leans more Democratic than 48 of 116 neighbors.

Orange runs about 14 points more Republican than California as a whole.

Politics vary noticeably by neighborhood within Orange. The west side runs the most Democratic (D+21) and the northeast side runs the most Republican (R+17), a spread of about 38 points.

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

Dense areas vote Democratic. About 96% of residents in Orange live in densely developed areas, about 60 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Orange sits in the top quarter (about 39%, above 87% of cities). A high never-married share predicts Democratic voting, and about 38% of adults in Orange have never been married, above 92% of cities.

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Orange, CA sits in the top tenth nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.

Why turnout in Orange looks the way it does

Renters vote less often than owners. About 43% of households in Orange rent, about 18 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 8% of homes in Orange have more than one occupant per room, above 95% 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.