San Patricio County leans heavily Republican by roughly 30 points: about 35% of voters vote Democratic and 65% Republican.
About 58% of adults in San Patricio County typically vote, near the U.S. average of about 62%. Among adults in San Patricio County, ~20% vote Democratic, ~38% Republican, and ~42% don't vote. The map below shows estimated turnout by block group.
How San Patricio County compares
Among counties within 50 miles, San Patricio County leans more Republican than 4 of 6 neighbors.
San Patricio County runs about 17 points more Republican than Texas as a whole.
Politics vary noticeably by city within San Patricio County. The northeast side is the most Republican-leaning (R+51) and the north side is the least Republican-leaning (R+10), a spread of about 42 points.
Why San Patricio County leans the way it does
This analysis examined 14,881 data points per county to find what predicts political lean and turnout. The items below are a few correlations that stood out for San Patricio County, not a ranked or complete list of what matters most.
Car-dependent areas vote Republican. About 83% of residents in San Patricio County drive to work alone, about 9 points above the U.S. average of 74%. A high family-household share predicts Republican voting, and about 73% of households in San Patricio County are family households, above 89% of counties.
Cancer-screening access and voter turnout
Places with low colon-cancer-screening access tend to turn out at a lower rate; San Patricio County, TX sits in the bottom tenth nationally on this measure. Cancer screening does not drive turnout; it reflects income, insurance, and healthcare access.
Why turnout in San Patricio County looks the way it does
Areas with limited routine healthcare access turn out at lower rates. San Patricio County is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 49%, about 11 points below the U.S. average of 60%. Renters vote less often than owners, and about 32% of households in San Patricio County rent, above 81% of counties. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Nueces County, TX R+4
- Aransas County, TX R+46
- Refugio County, TX R+36
- Bee County, TX R+22
- Kleberg County, TX R+6
- Jim Wells County, TX R+14
- Live Oak County, TX R+61
- Goliad County, TX R+60
- Duval County, TX R+10
- Kenedy County, TX R+44
Counties with Similar Populations
- Harrison County, TX R+39
- Wise County, TX R+69
- Franklin County, NC R+18
- Blue Earth County, MN R+6
- Lake County, CA R+4
- Greenwood County, SC R+18
- Allegany County, MD R+33
- Klamath County, OR R+33
- Shiawassee County, MI R+27
- Troup County, GA R+11
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.