Penryn leans heavily Republican by roughly 32 points: about 34% of voters vote Democratic and 66% Republican.
About 73% of adults in Penryn typically vote, above the U.S. average of about 62%. Among adults in Penryn, ~25% vote Democratic, ~48% Republican, and ~27% don't vote. The map below shows estimated turnout by block group.
How Penryn compares
Among cities within 25 miles, Penryn leans more Republican than 56 of 66 neighbors.
Penryn runs about 52 points more Republican than California as a whole. California leans Democratic overall, while Penryn is one of the few Republican-leaning pockets.
Politics vary noticeably by neighborhood within Penryn. The northeast side is the most Republican-leaning (R+40) and the southeast side is the least Republican-leaning (R+27), a spread of about 13 points.
Why Penryn 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 Penryn, not a ranked or complete list of what matters most.
Penryn votes against the grain of California. California leans Democratic overall, while Penryn runs about 52 points more Republican. Dense places usually vote Democratic, but Penryn runs against that pattern.
High-school completion, uninsured rate, and voter turnout
Places that combine high-school-completion-heavy adults and a low uninsured rate tend to turn out at a higher rate, as Penryn, CA does.
Why turnout in Penryn looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Penryn 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 71%, about 11 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 90% of households in Penryn own their home, about 15 points above the U.S. average of 75%. High high-school completion lines up with higher turnout, and about 96% of adults in Penryn have completed high school, above 81% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Newcastle, CA R+29
- Loomis, CA R+24
- Rocklin, CA R+9
- Lincoln, CA R+17
- North Auburn, CA R+13
- Auburn, CA R+12
- Granite Bay, CA R+11
- Roseville, CA R+5
- Pilot Hill, CA R+22
- Clipper Gap, CA R+25
Cities with Similar Populations
- Lamar, SC R+8
- Bronson, FL R+57
- Brewster, WA R+14
- Welch, WV R+32
- Tishomingo, OK R+56
- Maple Lake, MN R+37
- Highland Beach, FL R+12
- Cedar Bluff, AL R+74
- Waverly City, OH R+39
- Owenton, KY R+62
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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.