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Throckmorton, Texas
Inside Throckmorton's city limits, shrink-swell clay limits houses without basements on 24% of mapped land. A shallow water table limits basements on 0%.
That clay share is below Throckmorton County's 49%. FEMA's flood data list 2 flood losses since 2016 in ZIP code 76483 overlapping the city. Of its 444 homes, 91% were built before 1980; the median dates from 1956.
Data as of October 13, 2026 · sources · in Throckmorton 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 Throckmorton
Foundation repair in Throckmorton: shrink-swell clay limits slab homes on 24% of Throckmorton's mapped land.
About 400 of Throckmorton's 444 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 Throckmorton city limits
| Expansive clay (limits slab homes) | 23.5% |
| High water table (limits basements) | 0.0% |
| Septic fields very limited | 89.0% |
| Clay swell (LEP, by area) | 5.5% |
| High-swell land (LEP 6%+) | 31.4% |
| Mapped soil | 1,062 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Nuvalde | 17% | n/a |
| Pitzer | 14% | n/a |
| Clearfork | 13% | n/a |
| Lueders | 13% | n/a |
| Springcreek | 9% | n/a |
| Nukrum | 9% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 5.5% by land area here, and 31% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 24% of the mapped land.
Clay shrinks as it dries: 100% of Throckmorton County is in drought on the latest map, and 24% of Throckmorton's mapped land has shrink-swell clay.
USDA rates 89% of the land very limited for septic absorption fields.
Drought in Throckmorton County
100% of Throckmorton 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 Throckmorton. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 76483 | 100% | 2 | $157,662 |
Homes in Throckmorton
| Housing units | 444 |
| Median year built | 1956 |
| Built before 1980 | 91% |
| Built 2000 or later | 2% |
| Owner-occupied | 61% |
| Median value, owner-occupied | $70,700 |
| Single-family detached | 87% |
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