| ZIP Codes: | 11 ZIP Codes (6 Standard, 5 PO Box, 0 Unique) [See All] |
| Area Code: | 979 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:55:12 PM |
| Population: | 19,607 [See All] |
| FIPS: | 48089 |
| Land Area: | 886 sq mi |
| Water Area: | 13 sq mi |
| Coordinates: | 29.5683, -96.5512 |
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19,607 residents live across 11 ZIPs covering 886 sq mi, served by 11 distinct USPS-recognized cities.
Population moved from 19,590 to 19,607 from 2014 to 2024 — a +0.1% change. 3 ZIPs gained residents, 7 lost (and 1 held flat).
The county's wealthiest ZIP 78943 (Glidden, $98,531 median) and poorest ZIP 77470 (Rock Island, $43,149) are 12.0 miles apart — a 2.3× income gap across local geography.
Median home values vary 1.9× across this county — from $122,800 in 77470 (Rock Island) to $237,100 in 77442 (Garwood).
Density varies 233× across the county — from 5 people/sq mi in 77442 (Garwood) to 1,277 in 78943 (Glidden).
Educational attainment ranges from 3.2% bachelor's+ in 77475 (Sheridan) to 27.8% in 78934 (Columbus) — the breadth of educational profiles across the area.
Within Texas, this is the #123 most populous of 254 counties and ranks #121 for median household income .
Weighted by population, the typical household earns about $67,178 across the county — reflecting what a typical resident sees, not a simple ZIP average.
22.2% of adults age 25+ hold a bachelor's degree or higher (2,969 of 13,389 reporting).
6 Standard delivery, 5 PO Box only, 0 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 78934 | Columbus | Standard | 6,731 | $58,302 | 237.4 | 13.1% |
| 78962 | Weimar | Standard | 5,236 | $71,278 | 186.4 | -1.2% |
| 77434 | Eagle Lake | Standard | 3,970 | $71,705 | 158.6 | -14.7% |
| 77442 | Garwood | Standard | 1,123 | $70,859 | 205.3 | 14.7% |
| 78943 | Glidden | Standard | 886 | $98,531 | 0.7 | 299.1% |
| 78935 | Alleyton | Standard | 734 | — | 64.8 | -43.6% |
| 77475 | Sheridan | PO Box | 431 | $63,308 | 22.9 | -21.2% |
| 77470 | Rock Island | PO Box | 414 | $43,149 | 7.0 | -3.5% |
| 77460 | Nada | PO Box | 76 | — | 0.0 | -23.2% |
| 77412 | Altair | PO Box | 6 | — | 0.3 | -94.5% |
| 78951 | Oakland | PO Box | 0 | — | 2.1 | — |