Aptos, CA Political Map | Democrat & Republican Areas in Aptos

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

Aptos leans heavily Democratic by roughly 42 points: about 71% of voters vote Democratic and 29% Republican.

 

About 72% of adults in Aptos typically vote, above the U.S. average of about 62%. Among adults in Aptos, ~51% vote Democratic, ~21% Republican, and ~28% don't vote. The map below shows estimated turnout by block group.

How Aptos compares

Among cities within 25 miles, Aptos leans more Democratic than 31 of 41 neighbors.

Aptos runs about 21 points more Democratic than California as a whole.

Politics vary noticeably by neighborhood within Aptos. The south side is the most Democratic-leaning (D+48) and the east side is the least Democratic-leaning (D+38), a spread of about 10 points.

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

Dense areas vote Democratic. About 53% of residents in Aptos live in densely developed areas, about 17 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Aptos sits in the top quarter (about 48%, above 93% of cities). A high never-married share predicts Democratic voting, and about 33% of adults in Aptos have never been married, above 83% of cities.

Walkability and Democratic lean

Places with a highly walkable street grid tend to lean Democratic; Aptos, 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 Aptos looks the way it does

Areas with strong routine healthcare access turn out at higher rates. Aptos 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 73%, about 13 points above the U.S. average of 60%. High high-school completion lines up with higher turnout, and about 97% of adults in Aptos have completed high school, above 88% 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.