South Oak Park, Sacramento, CA Political Map | Democrat & Republican Areas in South Oak Park

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

South Oak Park leans heavily Democratic by roughly 40 points: about 70% of voters vote Democratic and 30% Republican.

 

About 39% of adults in South Oak Park typically vote, below the U.S. average of about 62%. Among adults in South Oak Park, ~27% vote Democratic, ~12% Republican, and ~61% don't vote. The map below shows estimated turnout by block group.

How South Oak Park compares

Among neighborhoods within 5 miles, South Oak Park leans more Democratic than 12 of 32 neighbors.

South Oak Park runs about 19 points more Democratic than California as a whole.

Politics vary noticeably by block within South Oak Park. The northwest side is the most Democratic-leaning (D+47) and the southeast side is the least Democratic-leaning (D+33), a spread of about 14 points.

Why South Oak 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 South Oak Park, not a ranked or complete list of what matters most.

Dense areas vote Democratic. More than 99% of residents in South Oak Park live in densely developed areas, about 64 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 54% of adults in South Oak Park have never been married, above 88% of neighborhoods.

Preventive-care access and voter turnout

Places with limited routine preventive-care access tend to turn out at a lower rate; South Oak Park, Sacramento, CA sits in the bottom quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.

Why turnout in South Oak Park looks the way it does

Areas with limited routine healthcare access turn out at lower rates. South Oak Park is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 46%, about 16 points below the California average of 62%. High food insecurity lines up with lower turnout, and about 31% of adults in South Oak Park report food insecurity, above 83% of neighborhoods. Low high-school completion lines up with lower turnout, and about 67% of adults in South Oak Park have completed high school, below 96% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.

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.