Corona Del Mar, CA Political Map | Democrat & Republican Areas in Corona Del Mar

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

Corona Del Mar leans slightly Republican by roughly 14 points: about 43% of voters vote Democratic and 57% Republican.

 

About 83% of adults in Corona Del Mar typically vote, above the U.S. average of about 62%. Among adults in Corona Del Mar, ~36% vote Democratic, ~47% Republican, and ~17% don't vote. The map below shows estimated turnout by block group.

How Corona Del Mar compares

Among cities within 25 miles, Corona Del Mar leans more Republican than 54 of 59 neighbors.

Corona Del Mar runs about 33 points more Republican than California as a whole. California leans Democratic overall, while Corona Del Mar is one of the few Republican-leaning pockets.

Politics vary noticeably by neighborhood within Corona Del Mar. The south side is the most split-leaning (R+19) and the north side is the least split-leaning (Even), a spread of about 19 points.

Why Corona Del Mar 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 Corona Del Mar, not a ranked or complete list of what matters most.

Corona Del Mar votes Republican even though it is densely developed (about 91%, far above the California average of 58%). Here an older population outweighs the Democratic lean that density usually predicts. Corona Del Mar runs against the grain of California, a Republican-leaning pocket in a Democratic-leaning state.

Preventive-care access and voter turnout

Places with strong routine preventive-care access tend to turn out at a higher rate; Corona Del Mar, CA sits in the top tenth 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 Corona Del Mar looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Corona Del Mar 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 76%, about 16 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 98% of adults in Corona Del Mar have completed high school, above 97% 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.