Post, Texas
Inside Post's city limits, shrink-swell clay limits houses without basements on 11% of mapped land. A shallow water table limits basements on 0%.
That clay share is below Garza County's 32%. FEMA's flood data list no flood losses since 2016 in ZIP code 79356 overlapping the city. Of its 1,580 homes, 60% were built before 1980; the median dates from 1970.
Data as of October 13, 2026 · sources · in Garza 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 Post
Foundation repair in Post: shrink-swell clay limits slab homes on 11% of Post's mapped land.
About 1,200 of Post's 1,580 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 Post city limits
| Expansive clay (limits slab homes) | 11.2% |
| High water table (limits basements) | 0.0% |
| Septic fields very limited | 73.5% |
| Clay swell (LEP, by area) | 4.0% |
| High-swell land (LEP 6%+) | 4.2% |
| Mapped soil | 2,405 acres |
What the numbers mean here
USDA rates 74% of the land very limited for septic absorption fields.
With shrink-swell clay on 11% and a shallow water table on 0% of the land, the soil survey points to neither problem across most of Post; conditions still vary lot by lot.
Drought in Garza County
100% of Garza 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 Post. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 79356 | 100% | 0 | $0 |
Homes in Post
| Housing units | 1,580 |
| Median year built | 1970 |
| Built before 1980 | 60% |
| Built 2000 or later | 14% |
| Owner-occupied | 68% |
| Median value, owner-occupied | $49,200 |
| Single-family detached | 76% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Wilson | 22 mi | 8% | 1% |
| Slaton | 23 mi | 8% | 2% |
| Tahoka | 24 mi | 4% | under 1% |
| Ransom Canyon | 29 mi | 8% | 1% |
| Buffalo Springs Lake | 30 mi | 2% | 0% |
| O'Donnell | 30 mi | 23% | under 1% |
| New Home | 32 mi | 3% | 2% |
| Crosbyton | 32 mi | 90% | 2% |
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