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La Joya, Texas
Inside La Joya's city limits, shrink-swell clay limits houses without basements on 2% of mapped land. A shallow water table limits basements on 3%, the 5th-highest of 22 cities in Hidalgo County.
That clay share is below Hidalgo County's 12%. FEMA's flood data list 3 flood losses since 2016 in ZIP code 78560 overlapping the city. Of its 1,817 homes, 23% were built before 1980; the median dates from 1996.
Data as of October 13, 2026 · sources · in Hidalgo 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 La Joya
Foundation repair in La Joya: shrink-swell clay limits slab homes on 2% of La Joya's mapped land.
About 1,200 of La Joya's 1,817 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 La Joya city limits
| Expansive clay (limits slab homes) | 2.3% |
| High water table (limits basements) | 2.6% |
| Septic fields very limited | 4.5% |
| Clay swell (LEP, by area) | 1.8% |
| High-swell land (LEP 6%+) | 2.3% |
| Mapped soil | 2,801 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| McAllen | 74% | n/a |
| Rio | 4% | n/a |
| Brennan | 3% | n/a |
| Runn | 2% | n/a |
| Ramadero | 1% | n/a |
| Harlingen | under 1% | n/a |
What the numbers mean here
With shrink-swell clay on 2% and a shallow water table on 3% of the land, the soil survey points to neither problem across most of La Joya; conditions still vary lot by lot.
Drought in Hidalgo County
100% of Hidalgo 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 La Joya. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 78560 | 99% | 3 | $24,121 |
Homes in La Joya
| Housing units | 1,817 |
| Median year built | 1996 |
| Built before 1980 | 23% |
| Built 2000 or later | 40% |
| Owner-occupied | 53% |
| Median value, owner-occupied | $108,000 |
| Single-family detached | 67% |
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