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Rockport, Texas
Inside Rockport's city limits, shrink-swell clay limits houses without basements on 5% of mapped land. A shallow water table limits basements on 53%.
That clay share is below Aransas County's 18%. FEMA's flood data list 2,583 flood losses since 2016 in ZIP code 78382 overlapping the city. Of its 7,197 homes, 31% were built before 1980; the median dates from 1989.
Data as of October 13, 2026 · sources · in Aransas 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 Rockport
Foundation repair in Rockport: shrink-swell clay limits slab homes on 5% of Rockport's mapped land.
About 4,900 of Rockport's 7,197 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 Rockport city limits
| Expansive clay (limits slab homes) | 5.0% |
| High water table (limits basements) | 52.9% |
| Septic fields very limited | 65.8% |
| Clay swell (LEP, by area) | 0.8% |
| High-swell land (LEP 6%+) | 5.0% |
| Mapped soil | 13,497 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Mustang | 29% | n/a |
| Galveston | 24% | n/a |
| Dianola | 6% | n/a |
| Dietrich | 5% | n/a |
| Tatton | 4% | n/a |
| Barrada | 4% | n/a |
What the numbers mean here
On 53% of Rockport's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 66% of the land very limited for septic absorption fields.
Drought in Aransas County
100% of Aransas 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 Rockport. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 78382 | 99% | 2,583 | $54.1 million |
Homes in Rockport
| Housing units | 7,197 |
| Median year built | 1989 |
| Built before 1980 | 31% |
| Built 2000 or later | 38% |
| Owner-occupied | 71% |
| Median value, owner-occupied | $320,500 |
| Single-family detached | 68% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Fulton | 2 mi | 0% | 30% |
| Bayside | 10 mi | 53% | 15% |
| Aransas Pass | 12 mi | 3% | 29% |
| Ingleside | 16 mi | 27% | 45% |
| Port Aransas | 16 mi | 1% | 49% |
| Gregory | 17 mi | 76% | 2% |
| Ingleside on the Bay | 18 mi | 0% | 26% |
| Portland | 20 mi | 63% | 7% |
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