Trinity County, Texas
Updated · Data: U.S. Census Bureau
Trinity County, Texas has its county seat in Groveton and FIPS code 48455. About 13,850 people live here, the 144th most populated of the 254 Texas counties.
| County seat | Groveton |
|---|---|
| FIPS code | 48455 (Texas 48 + county 455) · all Texas FIPS codes |
| Population | 13,850 (144th of 254) |
| Land area | 693.8 sq mi (218th largest; + 20.2 sq mi water) |
| People per sq mi | 20.0 |
| Time zone | Central time (America/Chicago) |
| Median home value | $110,100 |
| Median property tax paid | $1,219 a year (about 1.11% of the median home value: our calculation, not an official rate) |
| Official website | www.co.trinity.tx.us |
What counties border Trinity County?
Trinity County shares a border with 5 counties:
What cities and towns are in Trinity County?
2 places with 1,000+ people have residents here; together they hold about 28% of the county's population. The rest live in smaller communities and rural areas.
| Place | Population | Residents in this county |
|---|---|---|
| Trinity | 2,291 | 100.0% |
| Westwood Shores (CDP) | 1,561 | 100.0% |
CDP = census-designated place: a named community with no city government.
What ZIP codes are in Trinity County?
7 ZIP code areas with residents touch Trinity 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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