San Geronimo leans heavily Republican by roughly 32 points: about 34% of voters vote Democratic and 66% Republican.
About 80% of adults in San Geronimo typically vote, above the U.S. average of about 62%. Among adults in San Geronimo, ~27% vote Democratic, ~53% Republican, and ~20% don't vote. The map below shows estimated turnout by block group.
How San Geronimo compares
Among cities within 25 miles, San Geronimo leans more Republican than 17 of 37 neighbors.
San Geronimo runs about 18 points more Republican than Texas as a whole.
Politics vary noticeably by neighborhood within San Geronimo. The southeast side runs the most Democratic (D+2) and the northeast side runs the most Republican (R+61), a spread of about 63 points.
Why San Geronimo 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 San Geronimo, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 84% of households in San Geronimo are family households, about 18 points above the U.S. average of 67%.
Preventive-care access and voter turnout
Places with strong routine preventive-care access tend to turn out at a higher rate; San Geronimo, TX sits in the top quarter nationally on this measure. Dental visits do not drive turnout; the rate reflects income, insurance, and healthcare access, which line up with who votes.
Why turnout in San Geronimo looks the way it does
Homeowners vote more often than renters. About 94% of households in San Geronimo own their home, about 20 points above the Texas average of 75%. Limited routine healthcare access lines up with lower turnout, and San Geronimo sits in the bottom quarter on routine-care measures. High high-school completion lines up with higher turnout, and about 96% of adults in San Geronimo have completed high school, above 83% of cities. Learn more about the findings and methodology on the political spectrum map.
Nearby Cities
- Grey Forest, TX R+20
- Lakehills, TX R+56
- Helotes, TX R+8
- Pipe Creek, TX R+61
- Boerne, TX R+39
- Lake Medina Shores, TX R+49
- Rio Medina, TX R+35
- Fair Oaks Ranch, TX R+37
- Mico, TX R+58
- Leon Springs, TX R+61
Cities with Similar Populations
- Independence, WI R+28
- Garysburg, NC D+56
- Pine Forest, TX R+80
- Salina, UT R+68
- Dutton, AL R+81
- Whetstone, AZ R+53
- Marathon, WI R+42
- Fairchild AFB, WA R+13
- Prospect, PA R+45
- Grove Hill, AL R+13
Sources and methodology
Precinct-level voting records used to fit the model come from Texas Secretary of State, Elections Division, 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.