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Grand Saline, Texas
Inside Grand Saline's city limits, shrink-swell clay limits houses without basements on 58% of mapped land, the 5th-highest of 7 cities in Van Zandt County. A shallow water table limits basements on 36%, the 5th-highest of 7 cities in Van Zandt County.
That clay share is above Van Zandt County's 46%. FEMA's flood data list 2 flood losses since 2016 in ZIP code 75140 overlapping the city. Of its 1,406 homes, 74% were built before 1980; the median dates from 1971.
Data as of October 13, 2026 · sources · in Van Zandt 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 Grand Saline
Foundation repair in Grand Saline: shrink-swell clay limits slab homes on 58% of Grand Saline's mapped land, more than in 64% of Texas cities.
About 1,200 of Grand Saline's 1,406 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 Grand Saline city limits
| Expansive clay (limits slab homes) | 57.7% |
| High water table (limits basements) | 36.0% |
| Septic fields very limited | 77.8% |
| Clay swell (LEP, by area) | 6.4% |
| High-swell land (LEP 6%+) | 57.7% |
| Mapped soil | 1,353 acres |
What the numbers mean here
Clay swell averages a linear extensibility of 6.4% by land area here, and 58% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 58% of the mapped land.
Clay shrinks as it dries: 100% of Van Zandt County is in drought on the latest map, and 58% of Grand Saline's mapped land has shrink-swell clay.
On 36% of Grand Saline's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 78% of the land very limited for septic absorption fields.
Drought in Van Zandt County
100% of Van Zandt 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 Grand Saline. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 75140 | 100% | 2 | $150,159 |
Homes in Grand Saline
| Housing units | 1,406 |
| Median year built | 1971 |
| Built before 1980 | 74% |
| Built 2000 or later | 5% |
| Owner-occupied | 74% |
| Median value, owner-occupied | $119,600 |
| Single-family detached | 85% |
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