Thornton Park leans Democratic by roughly 18 points: about 59% of voters vote Democratic and 41% Republican.
About 39% of adults in Thornton Park typically vote, below the U.S. average of about 62%. Among adults in Thornton Park, ~23% vote Democratic, ~16% Republican, and ~61% don't vote. The map below shows estimated turnout by block group.
How Thornton Park compares
Among neighborhoods within 5 miles, Thornton Park leans more Democratic than 4 of 33 neighbors.
Politically, Thornton Park sits close to the rest of California.
Politics vary noticeably by block within Thornton Park. The northeast side is the most Democratic-leaning (D+27) and the southeast side is the least Democratic-leaning (D+13), a spread of about 14 points.
Why Thornton Park 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 Thornton Park, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in Thornton Park live in densely developed areas, about 64 points above the U.S. average of 36%.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Thornton Park, Santa Ana, CA sits in the top tenth nationally on this measure.
Why turnout in Thornton Park looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Thornton Park is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Crowded housing lines up with lower turnout, and about 20% of homes in Thornton Park have more than one occupant per room, above 98% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Mid City-Santa Ana, Santa Ana, CA D+33
- Central City Santa Ana, Santa Ana, CA D+32
- New Horizons, Santa Ana, CA D+33
- Pico-Lowell, Santa Ana, CA D+34
- Townsend-Raitt, Santa Ana, CA D+34
- Wilshire Square, Santa Ana, CA D+28
- Memorial Park, Santa Ana, CA D+31
- Henninger Park, Santa Ana, CA D+32
- Valley Adams, Santa Ana, CA D+23
- Windsor Village, Santa Ana, CA D+19
Neighborhoods with Similar Populations
- Downtown Ridgewood, Ridgewood, NJ D+30
- Highlands, Longview, WA R+4
- Belevedere, San Bernardino, CA R+3
- Tierra Linda, San Antonio, TX D+32
- South Shore of Wellington, Wellington, FL R+3
- Meador Park, Springfield, MO R+5
- Lost Lake, Clermont, FL R+10
- Sharp Park, Pacifica, CA D+51
- Aspen Ridge, Indianapolis, IN D+56
- Provo South, Provo, UT R+16
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.