Roseville leans heavily Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.
About 74% of adults in Roseville typically vote, above the U.S. average of about 62%. Among adults in Roseville, ~48% vote Democratic, ~26% Republican, and ~26% don't vote. The map below shows estimated turnout by block group.
How Roseville compares
Among neighborhoods within 5 miles, Roseville leans more Democratic than 2 of 18 neighbors.
Roseville runs about 10 points more Democratic than California as a whole.
Politics vary noticeably by block within Roseville. The north side is the most Democratic-leaning (D+39) and the southwest side is the least Democratic-leaning (D+25), a spread of about 13 points.
Why Roseville 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 Roseville, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 64% of adults in Roseville hold a bachelor's degree, about 35 points above the U.S. average of 28%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Roseville, San Diego, CA sits in the top 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 Roseville looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Roseville 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%. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Midtown District, San Diego, CA D+32
- Loma Portal, San Diego, CA D+38
- Ocean Beach, San Diego, CA D+43
- Wooded Area, San Diego, CA D+25
- Mission Hills-San Diego, San Diego, CA D+42
- Middletown, San Diego, CA D+47
- Moreno Mission, San Diego, CA D+40
- Little Italy, San Diego, CA D+40
- Columbia San Diego, San Diego, CA D+37
- Park West, San Diego, CA D+54
Neighborhoods with Similar Populations
- West Central, Spokane, WA D+32
- Merriman Valley, Akron, OH D+31
- Brookline Village Commercial District, Brookline, MA D+76
- Roosevelt-San Francisco, Redwood City, CA D+54
- Longfellow, Emeryville, CA D+80
- North Center, Chicago, IL D+67
- Washington, Huntington Beach, CA D+5
- Mesa Hills, El Paso, TX D+19
- Rancho del Rey, Chula Vista, CA D+15
- Sandpointe, Santa Ana, CA D+23
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.