HomeTexasDeWitt CountyYorktown
Yorktown, Texas
Inside Yorktown's city limits, shrink-swell clay limits houses without basements on 24% of mapped land, the 3rd-highest of 3 cities in DeWitt County. A shallow water table limits basements on 7%, the 2nd-highest of 3 cities in DeWitt County.
That clay share is close to DeWitt County's 27%. FEMA's flood data list 1 flood losses since 2016 in ZIP code 78164 overlapping the city. Of its 1,005 homes, 86% were built before 1980; the median dates from 1959.
Data as of October 13, 2026 · sources · in DeWitt 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 Yorktown
Foundation repair in Yorktown: shrink-swell clay limits slab homes on 24% of Yorktown's mapped land.
About 900 of Yorktown's 1,005 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 Yorktown city limits
| Expansive clay (limits slab homes) | 24.2% |
| High water table (limits basements) | 6.7% |
| Septic fields very limited | 72.1% |
| Clay swell (LEP, by area) | 4.8% |
| High-swell land (LEP 6%+) | 24.2% |
| Mapped soil | 1,106 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Leming | 21% | n/a |
| Weesatche | 16% | n/a |
| Papalote | 16% | n/a |
| Sarnosa | 14% | n/a |
| Orelia | 6% | n/a |
| Meguin | 5% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 4.8% by land area here, and 24% 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 DeWitt County is in drought on the latest map, and 24% of Yorktown's mapped land has shrink-swell clay.
USDA rates 72% of the land very limited for septic absorption fields.
Drought in DeWitt County
100% of DeWitt 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 Yorktown. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 78164 | 100% | 1 | $72,173 |
Homes in Yorktown
| Housing units | 1,005 |
| Median year built | 1959 |
| Built before 1980 | 86% |
| Built 2000 or later | 11% |
| Owner-occupied | 86% |
| Median value, owner-occupied | $165,600 |
| Single-family detached | 91% |
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