Mono County leans slightly Democratic by roughly 12 points: about 56% of voters vote Democratic and 44% Republican.
About 66% of adults in Mono County typically vote, near the U.S. average of about 62%. Among adults in Mono County, ~37% vote Democratic, ~29% Republican, and ~34% don't vote. The map below shows estimated turnout by block group.
How Mono County compares
Mono County runs about 7 points more Republican than California as a whole.
Politics vary noticeably by city within Mono County. The north side runs the most Democratic (D+24) and the northwest side runs the most Republican (R+10), a spread of about 34 points.
Why Mono County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for Mono County, not a ranked or complete list of what matters most.
Areas with many never-married adults vote Democratic. About 35% of adults in Mono County have never been married, modestly above similar-sized counties (around 27%).
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; Mono County, 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 Mono County looks the way it does
Turnout in Mono County 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 Counties
- Inyo County, CA R+4
- Mariposa County, CA R+16
- Mineral County, NV R+40
- Esmeralda County, NV R+61
- Tuolumne County, CA R+18
- Madera County, CA R+11
- Alpine County, CA D+36
- Fresno County, CA D+3
- Douglas County, NV R+32
- Calaveras County, CA R+29
Counties with Similar Populations
- Crenshaw County, AL R+54
- Shoshone County, ID R+43
- Jackson County, KS R+45
- Powell County, KY R+60
- Cass County, IA R+41
- Amelia County, VA R+40
- Calhoun County, MS R+39
- Big Horn County, MT Even
- Osage County, MO R+70
- Clay County, IL R+63
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.