Lompoc leans slightly Democratic by roughly 10 points: about 55% of voters vote Democratic and 45% Republican.
About 48% of adults in Lompoc typically vote, below the U.S. average of about 62%. Among adults in Lompoc, ~27% vote Democratic, ~22% Republican, and ~51% don't vote. The map below shows estimated turnout by block group.
How Lompoc compares
Among cities within 25 miles, Lompoc leans more Democratic than 13 of 17 neighbors.
Lompoc runs about 11 points more Republican than California as a whole.
Politics vary noticeably by neighborhood within Lompoc. The west side runs the most Democratic (D+17) and the northeast side runs the most Republican (Even), a spread of about 19 points.
Why Lompoc 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 Lompoc, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 81% of residents in Lompoc live in densely developed areas, about 45 points above the U.S. average of 36%. A high never-married share predicts Democratic voting, and about 39% of adults in Lompoc have never been married, above 92% of cities.
Walkability and Democratic lean
Places with a highly walkable street grid tend to lean Democratic; Lompoc, 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 Lompoc looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Lompoc is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. Renters vote less often than owners, and about 49% of households in Lompoc rent, about 24 points above the U.S. average of 25%. High food insecurity lines up with lower turnout, and about 25% of adults in Lompoc report food insecurity, above 91% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Vandenberg Village, CA R+4
- Surf, CA R+15
- Vandenberg AFB, CA D+3
- Vandenberg Air Force Base, CA D+3
- Los Alamos, CA R+5
- Casmalia, CA D+4
- Las Cruces, CA R+11
- Buellton, CA Even
- Garey, CA R+30
- Orcutt, CA R+8
Cities with Similar Populations
- Sherman, TX R+26
- Zephyrhills, FL R+26
- Morganton, NC R+32
- Antelope, CA R+2
- Coatesville, PA D+16
- Salina, KS R+21
- Holly Springs, NC D+7
- Chesterfield, MO D+5
- Prescott Valley, AZ R+25
- Chester, VA D+14
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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.