Piru leans slightly Democratic by roughly 14 points: about 57% of voters vote Democratic and 43% Republican.
About 45% of adults in Piru typically vote, below the U.S. average of about 62%. Among adults in Piru, ~26% vote Democratic, ~19% Republican, and ~55% don't vote. The map below shows estimated turnout by block group.
How Piru compares
Among cities within 25 miles, Piru leans more Democratic than 25 of 48 neighbors.
Piru runs about 6 points more Republican than California as a whole.
Politics vary noticeably by neighborhood within Piru. The north side runs the most Democratic (D+17) and the east side runs the most Republican (R+11), a spread of about 28 points.
Why Piru 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 Piru, not a ranked or complete list of what matters most.
Dense areas vote Democratic. About 33% of residents in Piru live in densely developed areas, above 82% of cities. A high never-married share predicts Democratic voting, and about 35% of adults in Piru have never been married, above 87% of cities.
Park access and Democratic lean
Places with heavy park coverage tend to lean Democratic; Piru, CA sits in the top tenth nationally on this measure. Park access does not change how people vote; it tends to track denser, higher-income areas.
Why turnout in Piru looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Piru 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 35% of households in Piru rent, above 91% of cities. High food insecurity lines up with lower turnout, and about 21% of adults in Piru report food insecurity, above 82% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Buckhorn, CA D+6
- Fillmore, CA D+5
- North Fillmore, CA R+10
- Virginia Colony, CA R+7
- Sespe, CA R+8
- Simi Valley, CA Even
- Castaic, CA R+7
- Moorpark, CA D+8
- Stevenson Ranch, CA D+5
- Brandeis, CA R+4
Cities with Similar Populations
- South Hollis, ME R+32
- Shawnette, TN R+75
- Polksville, KY R+63
- Pirtle, TX R+38
- Wounded Knee, SD D+57
- Artemus, KY R+57
- Huntly, VA R+23
- Leipsic, DE R+14
- Orum, SC R+18
- Lees Lick, KY R+57
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.