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San Elizario, Texas
Inside San Elizario's city limits, shrink-swell clay limits houses without basements on 22% of mapped land, the 2nd-highest of 7 cities in El Paso County. A shallow water table limits basements on 0%.
That clay share is above El Paso County's 4%. FEMA's flood data list no flood losses since 2016 in ZIP code 79849 overlapping the city. Of its 3,239 homes, 11% were built before 1980; the median dates from 2001.
Data as of October 13, 2026 · sources · in El Paso County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 1 overlapping ZIP
of homes built before 1980
Foundation repair in San Elizario
Foundation repair in San Elizario: shrink-swell clay limits slab homes on 22% of San Elizario's mapped land.
About 1,700 of San Elizario's 3,239 homes are detached houses.
| Who designs the repair | The ASCE Texas Section's repair guidelines say a Texas-licensed engineer should evaluate the foundation and design the repair (2022 guidelines) |
| Prices | Cost guide ranges compared |
Soil under San Elizario city limits
| Expansive clay (limits slab homes) | 22.4% |
| High water table (limits basements) | 0.0% |
| Septic fields very limited | 41.3% |
| Clay swell (LEP, by area) | 5.0% |
| High-swell land (LEP 6%+) | 22.4% |
| Mapped soil | 4,420 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Harkey | 34% | n/a |
| Glendale | 20% | n/a |
| Gila | 8% | n/a |
| Tigua | 7% | n/a |
| Saneli | 7% | n/a |
| Anapra | 6% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 5.0% by land area here, and 22% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 22% of the mapped land.
Drought in El Paso County
0% of El Paso County is in drought (D1 or worse) on the October 13, 2026 map. County detail.
Flood losses by ZIP code
FEMA flood records since 2016 in the ZIP codes that overlap San Elizario. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 79849 | 100% | 0 | $0 |
Homes in San Elizario
| Housing units | 3,239 |
| Median year built | 2001 |
| Built before 1980 | 11% |
| Built 2000 or later | 53% |
| Owner-occupied | 68% |
| Median value, owner-occupied | $110,400 |
| Single-family detached | 52% |
Nearby cities
Sources: USDA SSURGO (August 5, 2026) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · Census ACS 2020-2024. Methods · Data status