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Newcastle, Texas
Inside Newcastle's city limits, shrink-swell clay limits houses without basements on 38% of mapped land, the 2nd-highest of 3 cities in Young County. A shallow water table limits basements on under 1%.
That clay share is above Young County's 27%. FEMA's flood data list no flood losses since 2016 in ZIP code 76372 overlapping the city. Of its 346 homes, 64% were built before 1980; the median dates from 1969.
Data as of October 13, 2026 · sources · in Young 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 Newcastle
Foundation repair in Newcastle: shrink-swell clay limits slab homes on 38% of Newcastle's mapped land.
About 200 of Newcastle's 346 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 Newcastle city limits
| Expansive clay (limits slab homes) | 38.4% |
| High water table (limits basements) | 0.3% |
| Septic fields very limited | 86.5% |
| Clay swell (LEP, by area) | 4.3% |
| High-swell land (LEP 6%+) | 3.8% |
| Mapped soil | 1,149 acres |
What the numbers mean here
Clay swell averages a linear extensibility of 4.3% by land area here, and 4% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 38% of the mapped land.
Clay shrinks as it dries: 100% of Young County is in drought on the latest map, and 38% of Newcastle's mapped land has shrink-swell clay.
USDA rates 86% of the land very limited for septic absorption fields.
Drought in Young County
100% of Young 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 Newcastle. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 76372 | 100% | 0 | $0 |
Homes in Newcastle
| Housing units | 346 |
| Median year built | 1969 |
| Built before 1980 | 64% |
| Built 2000 or later | 11% |
| Owner-occupied | 72% |
| Median value, owner-occupied | $49,400 |
| Single-family detached | 68% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Graham | 12 mi | 22% | under 1% |
| Olney | 12 mi | 54% | 0% |
| Bryson | 21 mi | 19% | 3% |
| Megargel | 21 mi | 53% | 0% |
| Woodson | 22 mi | 5% | 0% |
| Throckmorton | 25 mi | 24% | 0% |
| Archer City | 28 mi | 24% | 0% |
| Windthorst | 32 mi | 56% | 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