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Cotulla, Texas
Inside Cotulla's city limits, shrink-swell clay limits houses without basements on 3% of mapped land. A shallow water table limits basements on under 1%.
That clay share is below La Salle County's 35%. FEMA's flood data list 2 flood losses since 2016 in ZIP code 78014 overlapping the city. Of its 1,337 homes, 47% were built before 1980; the median dates from 1982.
Data as of October 13, 2026 · sources · in La Salle 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 Cotulla
Foundation repair in Cotulla: shrink-swell clay limits slab homes on 3% of Cotulla's mapped land.
About 800 of Cotulla's 1,337 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 Cotulla city limits
| Expansive clay (limits slab homes) | 3.1% |
| High water table (limits basements) | 0.3% |
| Septic fields very limited | 53.0% |
| Clay swell (LEP, by area) | 2.8% |
| High-swell land (LEP 6%+) | 3.1% |
| Mapped soil | 1,285 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Dilley | 38% | n/a |
| Duval | 19% | n/a |
| Poteet | 11% | n/a |
| Brystal | 8% | n/a |
| Webb | 4% | n/a |
| Maverick | 2% | n/a |
What the numbers mean here
USDA rates 53% of the land very limited for septic absorption fields.
With shrink-swell clay on 3% and a shallow water table on under 1% of the land, the soil survey points to neither problem across most of Cotulla; conditions still vary lot by lot.
Drought in La Salle County
100% of La Salle 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 Cotulla. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 78014 | 100% | 2 | $45,000 |
Homes in Cotulla
| Housing units | 1,337 |
| Median year built | 1982 |
| Built before 1980 | 47% |
| Built 2000 or later | 26% |
| Owner-occupied | 72% |
| Median value, owner-occupied | $93,100 |
| Single-family detached | 63% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Dilley | 16 mi | 3% | 1% |
| Big Wells | 22 mi | 47% | under 1% |
| Encinal | 28 mi | 0% | 1% |
| Asherton | 32 mi | 8% | 0% |
| Pearsall | 33 mi | 1% | 1% |
| Carrizo Springs | 38 mi | 3% | under 1% |
| Crystal City | 40 mi | 37% | under 1% |
| Charlotte | 44 mi | 58% | under 1% |
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