Harbor City leans Democratic by roughly 26 points: about 63% of voters vote Democratic and 37% Republican.
About 48% of adults in Harbor City typically vote, below the U.S. average of about 62%. Among adults in Harbor City, ~30% vote Democratic, ~18% Republican, and ~52% don't vote. The map below shows estimated turnout by block group.
How Harbor City compares
Among cities within 25 miles, Harbor City leans more Democratic than 46 of 94 neighbors.
Harbor City runs about 7 points more Democratic than California as a whole.
Politics vary noticeably by neighborhood within Harbor City. The east side is the most Democratic-leaning (D+34) and the northwest side is the least Democratic-leaning (D+19), a spread of about 15 points.
Why Harbor City 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 Harbor City, not a ranked or complete list of what matters most.
Dense areas vote Democratic. More than 99% of residents in Harbor City live in densely developed areas, about 63 points above the U.S. average of 36%. High college attainment predicts Democratic voting, and Harbor City sits in the top quarter (about 32%, above 78% of cities). A high never-married share predicts Democratic voting, and about 41% of adults in Harbor City have never been married, above 94% of cities.
Paved land cover and Democratic lean
Places with extensive paved surfaces tend to lean Democratic; Harbor City, CA sits in the top tenth nationally on this measure. Paved ground does not change how people vote; it mostly reflects how urban and built-up a place is.
Why turnout in Harbor City looks the way it does
Renters vote less often than owners. About 49% of households in Harbor City rent, about 25 points above the U.S. average of 25%. Limited routine healthcare access lines up with lower turnout, and Harbor City sits in the bottom quarter on routine-care measures. High food insecurity lines up with lower turnout, and about 22% of adults in Harbor City report food insecurity, above 86% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Lomita, CA D+17
- Wilmington, CA D+30
- West Carson, CA D+25
- Rolling Hills, CA D+2
- Rolling Hills Estates, CA D+15
- Carson, CA D+38
- Torrance, CA D+22
- San Pedro, CA D+27
- Rancho Palos Verdes, CA D+18
- Palos Verdes Estates, CA D+15
Cities with Similar Populations
- Edgewater, FL R+33
- Sebastopol, CA D+50
- Chapin, SC R+40
- Hartsville, SC R+21
- Mokena, IL R+17
- Parrish, FL R+32
- Round Lake Beach, IL D+16
- Shoreview, MN D+30
- Atlantic Beach, FL R+17
- Emporia, KS R+5
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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.