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Jacinto City, Texas
Inside Jacinto City's city limits, shrink-swell clay limits houses without basements on 55% of mapped land, higher than 61% of Texas cities. A shallow water table limits basements on 23%.
That clay share is above Harris County's 25%. USDA doesn't rate the 33% of mapped land classed as urban land, so these shares are floors. FEMA's flood data list 268 flood losses since 2016 in ZIP code 77029 overlapping the city. Of its 3,340 homes, 73% were built before 1980; the median dates from 1960.
Data as of October 13, 2026 · sources · in Harris 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 Jacinto City
Foundation repair in Jacinto City: shrink-swell clay limits slab homes on 55% of Jacinto City's mapped land, more than in 61% of Texas cities.
About 2,600 of Jacinto City's 3,340 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 Jacinto City city limits
| Expansive clay (limits slab homes) | 54.7% |
| High water table (limits basements) | 23.3% |
| Septic fields very limited | 60.8% |
| Clay swell (LEP, by area) | 11.4% |
| High-swell land (LEP 6%+) | 54.7% |
| Urban land, not rated | 32.8% |
| Mapped soil | 1,183 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Lake Charles | 43% | 97% |
| Bernard | 7% | 43% |
| Texla | 6% | n/a |
| Vamont | 3% | n/a |
| Verland | 2% | n/a |
| Edna | 2% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 11.4% by land area here, and 55% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 55% of the mapped land.
Clay shrinks as it dries: 82.9% of Harris County is in drought on the latest map, and 55% of Jacinto City's mapped land has shrink-swell clay.
On 23% of Jacinto City's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 61% of the land very limited for septic absorption fields.
Drought in Harris County
82.9% of Harris 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 Jacinto City. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 77029 | 100% | 268 | $21.6 million |
Homes in Jacinto City
| Housing units | 3,340 |
| Median year built | 1960 |
| Built before 1980 | 73% |
| Built 2000 or later | 13% |
| Owner-occupied | 66% |
| Median value, owner-occupied | $156,200 |
| Single-family detached | 77% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Galena Park | 1 mi | 67% | 59% |
| South Houston | 7 mi | 53% | 6% |
| Houston | 9 mi | 29% | 48% |
| Deer Park | 9 mi | 58% | 74% |
| Pasadena | 9 mi | 53% | 37% |
| West University Place | 12 mi | 56% | 48% |
| Southside Place | 12 mi | 63% | 57% |
| Brookside Village | 13 mi | 69% | 56% |
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