Sierra Oaks leans heavily Democratic by roughly 42 points: about 71% of voters vote Democratic and 29% Republican.
About 72% of adults in Sierra Oaks typically vote, above the U.S. average of about 62%. Among adults in Sierra Oaks, ~51% vote Democratic, ~21% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.
How Sierra Oaks compares
Among neighborhoods within 5 miles, Sierra Oaks leans more Democratic than 17 of 30 neighbors.
Sierra Oaks runs about 22 points more Democratic than California as a whole.
Politics vary noticeably by block within Sierra Oaks. The northwest side is the most Democratic-leaning (D+48) and the southeast side is the least Democratic-leaning (D+37), a spread of about 10 points.
Why Sierra Oaks leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Sierra Oaks. The lean here lands roughly where demographic data alone would predict.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; Sierra Oaks, Sacramento, CA sits in the top quarter nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Sierra Oaks looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Sierra Oaks is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 71%, about 11 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Sierra Oaks have completed high school, above 81% of neighborhoods. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Campus Commons, Sacramento, CA D+48
- Csus, Sacramento, CA D+55
- College Glen, Sacramento, CA D+31
- River Park, Sacramento, CA D+41
- East Sacramento, Sacramento, CA D+59
- Tahoe Park, Sacramento, CA D+54
- Colonial Manor, Sacramento, CA D+26
- Colonial Village, Sacramento, CA D+29
- Colonial Heights, Sacramento, CA D+52
- Ben Ali, Sacramento, CA D+22
Neighborhoods with Similar Populations
- Fry Springs, Charlottesville, VA D+68
- Alessandro Heights, Riverside, CA R+18
- Doylestown Historic District, Doylestown, PA D+26
- Tall Grass, Naperville, IL D+19
- Highlands Park, Smyrna, GA D+44
- Central West, Trenton, NJ D+79
- Beacon Hills and Harbour, Jacksonville, FL R+27
- East Winston, Winston-Salem, NC D+82
- Trinity Park, Durham, NC D+86
- Midtown-Grand Rapids, Grand Rapids, MI D+62
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.