Sierra Springs leans slightly Democratic by roughly 12 points: about 56% of voters vote Democratic and 44% Republican.
About 59% of adults in Sierra Springs typically vote, near the U.S. average of about 62%. Among adults in Sierra Springs, ~33% vote Democratic, ~26% Republican, and ~41% don't vote. The map below shows estimated turnout by block group.
How Sierra Springs compares
Among neighborhoods within 5 miles, Sierra Springs leans more Democratic than 3 of 13 neighbors.
Sierra Springs runs about 26 points more Democratic than Texas as a whole. Texas leans Republican overall, while Sierra Springs is one of the few Democratic-leaning pockets.
Why Sierra Springs leans the way it does
This analysis examined 14,881 data points per neighborhood to find what predicts political lean and turnout. The items below are a few correlations that stood out for Sierra Springs, not a ranked or complete list of what matters most.
Sierra Springs votes against the grain of Texas. Texas leans Republican overall, while Sierra Springs runs about 26 points more Democratic.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Sierra Springs, San Antonio, TX sits in the top quarter nationally on this measure.
Why turnout in Sierra Springs looks the way it does
Areas with limited routine healthcare access turn out at lower rates. Sierra Springs is in the bottom quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The uninsured rate here is about 21%, about 10 points above the U.S. average of 10%. Learn more about the findings and methodology on the political spectrum map.
Nearby Neighborhoods
- Heritage, San Antonio, TX D+20
- Villages of Westcreek, San Antonio, TX D+7
- Adams Hill, San Antonio, TX D+15
- Timber Ridge, San Antonio, TX D+15
- San Antonio Creekside, San Antonio, TX D+11
- Crown Meadows, San Antonio, TX D+22
- Rainbow Hills, San Antonio, TX D+23
- Meadow Village, San Antonio, TX D+24
- Pipers Meadow, San Antonio, TX D+21
- Great Northwest, San Antonio, TX D+10
Neighborhoods with Similar Populations
- Standish, Minneapolis, MN D+76
- Palmer, Newport News, VA D+32
- Arlington Center, Arlington, MA D+71
- 25th Street, Ogden, UT D+13
- Meydenbauer, Bellevue, WA D+45
- Memorial Northwest, Spring, TX R+20
- Normandy Estates, Jacksonville, FL Even
- Mount Pleasant-Lower Broadway, Newark, NJ D+36
- North Hampton, St. Louis, MO D+54
- Idlewild South, Charlotte, NC D+41
All Local Stats
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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.