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

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

Azusa leans Democratic by roughly 22 points: about 61% of voters vote Democratic and 39% Republican.

 

About 48% of adults in Azusa typically vote, below the U.S. average of about 62%. Among adults in Azusa, ~29% vote Democratic, ~19% Republican, and ~52% don't vote. The map below shows estimated turnout by block group.

How Azusa compares

Among cities within 25 miles, Azusa leans more Democratic than 61 of 106 neighbors.

Politically, Azusa sits close to the rest of California.

Politics vary noticeably by neighborhood within Azusa. The south side is the most Democratic-leaning (D+29) and the northeast side is the least Democratic-leaning (D+14), a spread of about 15 points.

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

Dense areas vote Democratic. About 94% of residents in Azusa live in densely developed areas, about 57 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 47% of adults in Azusa have never been married, above 97% of cities.

Population density and Democratic lean

Places with high population density tend to lean Democratic; Azusa, CA sits in the top tenth nationally on this measure.

Why turnout in Azusa looks the way it does

Areas with limited routine healthcare access turn out at lower rates. Azusa is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 43% of households in Azusa rent, about 18 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 23% of adults in Azusa report food insecurity, above 88% 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.