Yorkville leans heavily Democratic by roughly 30 points: about 65% of voters vote Democratic and 35% Republican.
About 65% of adults in Yorkville typically vote, near the U.S. average of about 62%. Among adults in Yorkville, ~42% vote Democratic, ~23% Republican, and ~35% don't vote. The map below shows estimated turnout by block group.
How Yorkville compares
Among cities within 25 miles, Yorkville leans more Democratic than 11 of 22 neighbors.
Yorkville runs about 10 points more Democratic than California as a whole.
Politics vary noticeably by neighborhood within Yorkville. The southwest side is the most Democratic-leaning (D+46) and the southeast side is the least Democratic-leaning (D+15), a spread of about 31 points.
Why Yorkville 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 Yorkville, not a ranked or complete list of what matters most.
Areas with high college attainment vote Democratic. About 35% of adults in Yorkville hold a bachelor's degree, about 7 points above the U.S. average of 28%. A high never-married share predicts Democratic voting, and about 38% of adults in Yorkville have never been married, above 92% of cities.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Yorkville, CA sits in the top quarter nationally on this measure. A walkable street grid does not change how people vote; it mostly reflects how urban a place is.
Why turnout in Yorkville looks the way it does
Turnout in Yorkville sits close to the national pattern. Routine healthcare access, homeownership, education, and food security all land near their national averages here. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Boonville, CA D+35
- Hopland, CA D+11
- Old Hopland, CA D+12
- Talmage, CA D+11
- Philo, CA D+46
- Annapolis, CA D+55
- Ukiah, CA D+18
- Calpella, CA D+17
- Gualala, CA D+53
- The Sea Ranch, CA D+53
Cities with Similar Populations
- Youmans, FL R+58
- Camargo, OK R+78
- Uva, WY R+70
- Kneeland, MI R+45
- Mendon, MO R+70
- Pullman, WV R+69
- Clemons, NY R+33
- Stokley, MO R+62
- Matinburg, TX R+57
- Stone Creek, VA R+64
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.