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Saint Jo, Texas
Inside Saint Jo's city limits, shrink-swell clay limits houses without basements on 42% of mapped land, the highest of 3 cities in Montague County. A shallow water table limits basements on 2%, the 2nd-highest of 3 cities in Montague County.
That clay share is above Montague County's 23%. FEMA's flood data list no flood losses since 2016 in ZIP code 76265 overlapping the city. Of its 407 homes, 68% were built before 1980; the median dates from 1972.
Data as of October 13, 2026 · sources · in Montague 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 Saint Jo
Foundation repair in Saint Jo: shrink-swell clay limits slab homes on 42% of Saint Jo's mapped land, more than in 51% of Texas cities.
About 300 of Saint Jo's 407 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 Saint Jo city limits
| Expansive clay (limits slab homes) | 42.2% |
| High water table (limits basements) | 2.5% |
| Septic fields very limited | 89.0% |
| Clay swell (LEP, by area) | 8.2% |
| High-swell land (LEP 6%+) | 36.6% |
| Mapped soil | 751 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Windthorst | 35% | 37% |
| Branyon | 29% | 92% |
| Bosque | 10% | n/a |
| Aledo | 5% | n/a |
| Duffau | 3% | n/a |
| Renfrow | 3% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 8.2% by land area here, and 37% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 42% of the mapped land.
Clay shrinks as it dries: 100% of Montague County is in drought on the latest map, and 42% of Saint Jo's mapped land has shrink-swell clay.
USDA rates 89% of the land very limited for septic absorption fields.
Drought in Montague County
100% of Montague 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 Saint Jo. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 76265 | 100% | 0 | $0 |
Homes in Saint Jo
| Housing units | 407 |
| Median year built | 1972 |
| Built before 1980 | 68% |
| Built 2000 or later | 11% |
| Owner-occupied | 69% |
| Median value, owner-occupied | $159,400 |
| Single-family detached | 79% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Muenster | 9 mi | 53% | 0% |
| Nocona | 13 mi | 12% | under 1% |
| Lindsay | 18 mi | 75% | 0% |
| Bowie | 21 mi | 23% | 4% |
| Gainesville | 22 mi | 76% | 0% |
| Alvord | 25 mi | 13% | 10% |
| Valley View | 26 mi | 65% | 0% |
| Oak Ridge | 28 mi | 9% | 3% |
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