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Hamlin, Texas
Inside Hamlin's city limits, shrink-swell clay limits houses without basements on 59% of mapped land, the 3rd-highest of 4 cities in Jones County. A shallow water table limits basements on under 1%.
That clay share is close to Jones County's 54%. FEMA's flood data list 17 flood losses since 2016 in ZIP code 79520 overlapping the city. Of its 1,004 homes, 72% were built before 1980; the median dates from 1964.
Data as of October 13, 2026 · sources · in Jones 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 Hamlin
Foundation repair in Hamlin: shrink-swell clay limits slab homes on 59% of Hamlin's mapped land, more than in 65% of Texas cities.
About 900 of Hamlin's 1,004 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 Hamlin city limits
| Expansive clay (limits slab homes) | 58.5% |
| High water table (limits basements) | 0.4% |
| Septic fields very limited | 90.0% |
| Clay swell (LEP, by area) | 5.7% |
| High-swell land (LEP 6%+) | 51.6% |
| Mapped soil | 3,390 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Rowena | 50% | n/a |
| Pyron | 16% | n/a |
| Sagerton | 9% | 88% |
| Spur | 5% | n/a |
| Acme | 4% | n/a |
| Weymouth | 4% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 5.7% by land area here, and 52% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 59% of the mapped land.
Clay shrinks as it dries: 100% of Jones County is in drought on the latest map, and 59% of Hamlin's mapped land has shrink-swell clay.
USDA rates 90% of the land very limited for septic absorption fields.
Drought in Jones County
100% of Jones 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 Hamlin. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 79520 | 100% | 17 | $1.3 million |
Homes in Hamlin
| Housing units | 1,004 |
| Median year built | 1964 |
| Built before 1980 | 72% |
| Built 2000 or later | 12% |
| Owner-occupied | 72% |
| Median value, owner-occupied | $73,200 |
| Single-family detached | 89% |
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