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Georgetown, Texas
Inside Georgetown's city limits, shrink-swell clay limits houses without basements on 42% of mapped land, higher than 51% of Texas cities. A shallow water table limits basements on under 1%.
That clay share is below Williamson County's 60%. FEMA's flood data list 18 flood losses since 2016 in the 3 ZIP codes overlapping the city. Of its 37,206 homes, 9% were built before 1980; the median dates from 2008.
Data as of October 13, 2026 · sources · in Williamson County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 3 overlapping ZIPs
of homes built before 1980
Foundation repair in Georgetown
Foundation repair in Georgetown: shrink-swell clay limits slab homes on 42% of Georgetown's mapped land, more than in 51% of Texas cities.
The city requires a permit for the work.
About 27,300 of Georgetown's 37,206 homes are detached houses.
| City permit | Required. Georgetown lists foundation repair among the projects for which a permit is required. (City of Georgetown, Texas, read October 2, 2026) |
| Engineer | Georgetown's foundation repair page lists foundation plans stamped by an engineer as a submittal requirement. (City of Georgetown, Texas) |
| Prices | Cost guide ranges compared |
Soil under Georgetown city limits
| Expansive clay (limits slab homes) | 42.0% |
| High water table (limits basements) | under 0.1% |
| Septic fields very limited | 79.1% |
| Clay swell (LEP, by area) | 6.5% |
| High-swell land (LEP 6%+) | 46.7% |
| Mapped soil | 40,179 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Eckrant | 27% | 8% |
| Georgetown | 12% | n/a |
| Austin | 6% | 93% |
| Doss | 5% | n/a |
| Houston Black | 5% | 91% |
| Krum | 5% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 6.5% by land area here, and 47% 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 Williamson County is in drought on the latest map, and 42% of Georgetown's mapped land has shrink-swell clay.
USDA rates 79% of the land very limited for septic absorption fields.
Drought in Williamson County
100% of Williamson 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 Georgetown. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 78626 | 36% | 10 | $399,137 |
| 78628 | 34% | 6 | $296,901 |
| 78633 | 31% | 2 | $0 |
Homes in Georgetown
| Housing units | 37,206 |
| Median year built | 2008 |
| Built before 1980 | 9% |
| Built 2000 or later | 69% |
| Owner-occupied | 70% |
| Median value, owner-occupied | $429,100 |
| Single-family detached | 74% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Weir | 6 mi | 57% | under 1% |
| Round Rock | 10 mi | 56% | under 1% |
| Jarrell | 11 mi | 49% | 0% |
| Leander | 12 mi | 48% | under 1% |
| Liberty Hill | 12 mi | 56% | 0% |
| Hutto | 13 mi | 70% | under 1% |
| Cedar Park | 13 mi | 48% | 0% |
| Florence | 13 mi | 74% | under 1% |
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