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Floresville, Texas
Inside Floresville's city limits, shrink-swell clay limits houses without basements on 16% of mapped land, the 2nd-highest of 4 cities in Wilson County. A shallow water table limits basements on under 1%.
That clay share is below Wilson County's 36%. FEMA's flood data list 1 flood losses since 2016 in ZIP code 78114 overlapping the city. Of its 3,324 homes, 26% were built before 1980; the median dates from 1999.
Data as of October 13, 2026 · sources · in Wilson 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 Floresville
Foundation repair in Floresville: shrink-swell clay limits slab homes on 16% of Floresville's mapped land.
About 2,200 of Floresville's 3,324 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 Floresville city limits
| Expansive clay (limits slab homes) | 16.1% |
| High water table (limits basements) | 0.1% |
| Septic fields very limited | 88.3% |
| Clay swell (LEP, by area) | 4.7% |
| High-swell land (LEP 6%+) | 6.2% |
| Mapped soil | 4,943 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Wilco | 27% | n/a |
| Floresville | 27% | n/a |
| Miguel | 11% | n/a |
| Saspamco | 6% | n/a |
| Poth | 6% | n/a |
| Buchel | 3% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 4.7% by land area here, and 6% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 16% of the mapped land.
Clay shrinks as it dries: 100% of Wilson County is in drought on the latest map, and 16% of Floresville's mapped land has shrink-swell clay.
USDA rates 88% of the land very limited for septic absorption fields.
Drought in Wilson County
100% of Wilson 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 Floresville. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 78114 | 100% | 1 | $10,719 |
Homes in Floresville
| Housing units | 3,324 |
| Median year built | 1999 |
| Built before 1980 | 26% |
| Built 2000 or later | 49% |
| Owner-occupied | 67% |
| Median value, owner-occupied | $241,000 |
| Single-family detached | 65% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Poth | 7 mi | 51% | 1% |
| Elmendorf | 12 mi | 11% | under 1% |
| Stockdale | 14 mi | 8% | 0% |
| Falls City | 14 mi | 35% | 0% |
| La Vernia | 14 mi | 7% | 0% |
| Sandy Oaks | 15 mi | 0% | 0% |
| St. Hedwig | 19 mi | 54% | under 1% |
| China Grove | 20 mi | 60% | 0% |
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