HomeTexasMcLennan CountyRobinson
Robinson, Texas
Inside Robinson's city limits, shrink-swell clay limits houses without basements on 73% of mapped land, the 5th-highest of 19 cities in McLennan County. A shallow water table limits basements on 1%, the 3rd-highest of 19 cities in McLennan County.
That clay share is above McLennan County's 56%. FEMA's flood data list 25 flood losses since 2016 in the 2 ZIP codes overlapping the city. Of its 4,474 homes, 31% were built before 1980; the median dates from 1990.
Data as of October 13, 2026 · sources · in McLennan County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 2 overlapping ZIPs
of homes built before 1980
Foundation repair in Robinson
Foundation repair in Robinson: shrink-swell clay limits slab homes on 73% of Robinson's mapped land, more than in 77% of Texas cities.
About 3,900 of Robinson's 4,474 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 Robinson city limits
| Expansive clay (limits slab homes) | 73.1% |
| High water table (limits basements) | 1.4% |
| Septic fields very limited | 79.6% |
| Clay swell (LEP, by area) | 9.7% |
| High-swell land (LEP 6%+) | 72.3% |
| Mapped soil | 19,793 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Houston Black | 26% | 91% |
| Heiden | 12% | 80% |
| Branyon | 11% | 92% |
| Lott | 5% | n/a |
| Fairlie | 5% | 70% |
| Ovan | 4% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 9.7% by land area here, and 72% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 73% of the mapped land.
Clay shrinks as it dries: 100% of McLennan County is in drought on the latest map, and 73% of Robinson's mapped land has shrink-swell clay.
USDA rates 80% of the land very limited for septic absorption fields.
Drought in McLennan County
100% of McLennan 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 Robinson. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 76706 | 83% | 25 | $372,887 |
| 76655 | 16% | 0 | $0 |
Homes in Robinson
| Housing units | 4,474 |
| Median year built | 1990 |
| Built before 1980 | 31% |
| Built 2000 or later | 34% |
| Owner-occupied | 79% |
| Median value, owner-occupied | $302,200 |
| Single-family detached | 87% |
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