Karnes County, Texas
Updated · Data: U.S. Census Bureau
Karnes County, Texas has its county seat in Karnes City and FIPS code 48255. About 14,819 people live here, the 140th most populated of the 254 Texas counties.
| County seat | Karnes City |
|---|---|
| FIPS code | 48255 (Texas 48 + county 255) · all Texas FIPS codes |
| Population | 14,819 (140th of 254) |
| Land area | 747.8 sq mi (209th largest; + 5.8 sq mi water) |
| People per sq mi | 19.8 |
| Time zone | Central time (America/Chicago) |
| Median home value | $136,900 |
| Median property tax paid | $1,344 a year (about 0.98% of the median home value: our calculation, not an official rate) |
| Official website | www.co.karnes.tx.us |
What counties border Karnes County?
Karnes County shares a border with 7 counties:
What cities and towns are in Karnes County?
3 places with 1,000+ people have residents here; together they hold about 52% of the county's population. The rest live in smaller communities and rural areas.
| Place | Population | Residents in this county |
|---|---|---|
| Kenedy | 3,442 | 100.0% |
| Karnes City | 3,101 | 100.0% |
| Runge | 1,196 | 100.0% |
CDP = census-designated place: a named community with no city government.
What ZIP codes are in Karnes County?
8 ZIP code areas with residents touch Karnes County; the ones marked * cross into another county.
Check an exact address with the address lookup, look up a ZIP code, or see how to confirm your county with official records.
Sources: Census TIGER/Line 2024 (boundary, area, neighbors); ACS 2019-2023 5-year (population, home value, taxes paid); Wikidata, CC0 (seat, website); timezone-boundary-builder (time zone). Data as of November 1, 2026. Not affiliated with any government agency.
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