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Pampa, Texas
Inside Pampa's city limits, shrink-swell clay limits houses without basements on 68% of mapped land, the highest of 3 cities in Gray County. A shallow water table limits basements on under 1%.
That clay share is above Gray County's 31%. FEMA's flood data list no flood losses since 2016 in ZIP code 79065 overlapping the city. Of its 8,451 homes, 77% were built before 1980; the median dates from 1961.
Data as of October 13, 2026 · sources · in Gray 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 Pampa
Foundation repair in Pampa: shrink-swell clay limits slab homes on 68% of Pampa's mapped land, more than in 72% of Texas cities.
About 7,300 of Pampa's 8,451 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 Pampa city limits
| Expansive clay (limits slab homes) | 67.5% |
| High water table (limits basements) | 0.3% |
| Septic fields very limited | 74.9% |
| Clay swell (LEP, by area) | 5.4% |
| High-swell land (LEP 6%+) | 66.3% |
| Mapped soil | 5,773 acres |
What the numbers mean here
Clay swell averages a linear extensibility of 5.4% by land area here, and 66% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 68% of the mapped land.
Clay shrinks as it dries: 100% of Gray County is in drought on the latest map, and 68% of Pampa's mapped land has shrink-swell clay.
USDA rates 75% of the land very limited for septic absorption fields.
Drought in Gray County
100% of Gray 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 Pampa. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 79065 | 100% | 0 | $0 |
Homes in Pampa
| Housing units | 8,451 |
| Median year built | 1961 |
| Built before 1980 | 77% |
| Built 2000 or later | 9% |
| Owner-occupied | 74% |
| Median value, owner-occupied | $100,700 |
| Single-family detached | 86% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Lefors | 12 mi | 0% | under 1% |
| Skellytown | 12 mi | 45% | 0% |
| White Deer | 14 mi | 99% | 2% |
| Miami | 21 mi | 0% | 1% |
| Groom | 25 mi | 93% | 29% |
| Borger | 26 mi | 0% | 0% |
| Panhandle | 27 mi | over 99% | 8% |
| Mobeetie | 29 mi | under 1% | 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