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Nacogdoches, Texas
Inside Nacogdoches' city limits, shrink-swell clay limits houses without basements on under 1% of mapped land. A shallow water table limits basements on 8%, the 5th-highest of 5 cities in Nacogdoches County.
That clay share is below Nacogdoches County's 13%. FEMA's flood data list 23 flood losses since 2016 in the 4 ZIP codes overlapping the city. Of its 14,192 homes, 48% were built before 1980; the median dates from 1981.
Data as of October 13, 2026 · sources · in Nacogdoches County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 4 overlapping ZIPs
of homes built before 1980
Foundation repair in Nacogdoches
Foundation repair in Nacogdoches: shrink-swell clay limits slab homes on under 1% of Nacogdoches' mapped land.
About 6,700 of Nacogdoches' 14,192 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 Nacogdoches city limits
| Expansive clay (limits slab homes) | 0.3% |
| High water table (limits basements) | 8.0% |
| Septic fields very limited | 64.4% |
| Clay swell (LEP, by area) | 2.3% |
| High-swell land (LEP 6%+) | 0.3% |
| Urban land, not rated | 19.7% |
| Mapped soil | 17,695 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Darco | 16% | n/a |
| Lilbert | 13% | 0% |
| Nacogdoches | 8% | 0% |
| Trawick | 7% | n/a |
| Hannahatchee | 6% | n/a |
| Tenaha | 4% | n/a |
What the numbers mean here
USDA rates 64% of the land very limited for septic absorption fields.
With shrink-swell clay on under 1% and a shallow water table on 8% of the land, the soil survey points to neither problem across most of Nacogdoches; conditions still vary lot by lot.
Drought in Nacogdoches County
100% of Nacogdoches 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 Nacogdoches. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 75964 | 43% | 0 | $0 |
| 75961 | 31% | 2 | $208,000 |
| 75965 | 25% | 21 | $2.1 million |
| 75962 | 1% | 0 | $0 |
Homes in Nacogdoches
| Housing units | 14,192 |
| Median year built | 1981 |
| Built before 1980 | 48% |
| Built 2000 or later | 22% |
| Owner-occupied | 38% |
| Median value, owner-occupied | $186,000 |
| Single-family detached | 47% |
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