Rohnert Park, CA Political Map | Democrat & Republican Areas in Rohnert Park

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

Rohnert Park leans heavily Democratic by roughly 38 points: about 69% of voters vote Democratic and 31% Republican.

 

About 60% of adults in Rohnert Park typically vote, near the U.S. average of about 62%. Among adults in Rohnert Park, ~41% vote Democratic, ~19% Republican, and ~40% don't vote. The map below shows estimated turnout by block group.

How Rohnert Park compares

Among cities within 25 miles, Rohnert Park leans more Democratic than 19 of 55 neighbors.

Rohnert Park runs about 17 points more Democratic than California as a whole.

Politics vary noticeably by neighborhood within Rohnert Park. The west side is the most Democratic-leaning (D+40) and the northeast side is the least Democratic-leaning (D+30), a spread of about 11 points.

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

Dense areas vote Democratic. About 86% of residents in Rohnert Park live in densely developed areas, about 50 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Rohnert Park sits in the top quarter (about 31%, above 77% of cities). A high never-married share predicts Democratic voting, and about 45% of adults in Rohnert Park have never been married, above 96% of cities.

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Rohnert Park, CA sits in the top tenth 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 Rohnert Park looks the way it does

Renters vote less often than owners. About 49% of households in Rohnert Park rent, about 24 points above the U.S. average of 25%. Crowded housing lines up with lower turnout, and about 6% of homes in Rohnert Park have more than one occupant per room, above 90% of cities. 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.