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Sulphur Springs, Texas
Inside Sulphur Springs' city limits, shrink-swell clay limits houses without basements on 65% of mapped land, the 4th-highest of 4 cities in Hopkins County. A shallow water table limits basements on 38%, the highest of 4 cities in Hopkins County.
That clay share is close to Hopkins County's 63%. FEMA's flood data list 5 flood losses since 2016 in ZIP code 75482 overlapping the city. Of its 6,858 homes, 58% were built before 1980; the median dates from 1976.
Data as of October 13, 2026 · sources · in Hopkins 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 Sulphur Springs
Foundation repair in Sulphur Springs: shrink-swell clay limits slab homes on 65% of Sulphur Springs' mapped land, more than in 69% of Texas cities.
About 4,900 of Sulphur Springs' 6,858 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 Sulphur Springs city limits
| Expansive clay (limits slab homes) | 64.5% |
| High water table (limits basements) | 37.5% |
| Septic fields very limited | 73.8% |
| Clay swell (LEP, by area) | 8.7% |
| High-swell land (LEP 6%+) | 66.8% |
| Mapped soil | 20,529 acres |
What the numbers mean here
Clay swell averages a linear extensibility of 8.7% by land area here, and 67% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 65% of the mapped land.
Clay shrinks as it dries: 100% of Hopkins County is in drought on the latest map, and 65% of Sulphur Springs' mapped land has shrink-swell clay.
On 38% of Sulphur Springs' mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 74% of the land very limited for septic absorption fields.
Drought in Hopkins County
100% of Hopkins 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 Sulphur Springs. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 75482 | 100% | 5 | $77,188 |
Homes in Sulphur Springs
| Housing units | 6,858 |
| Median year built | 1976 |
| Built before 1980 | 58% |
| Built 2000 or later | 20% |
| Owner-occupied | 55% |
| Median value, owner-occupied | $217,800 |
| Single-family detached | 72% |
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