County Maps US

Trinity County, Texas

A county in Texas, ranked 143 of 254 by population.

CountyFIPS 48455

Within Texas
Trinity County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Groveton, the county seat, located via the 2025 Census Gazetteer.

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Population
14,384
+748 (+5.5%) since 2020
Land area
693.9
square miles. A further 2.8% of the total area is water
Population density
20.7
people per square mile, computed rather than published
County seat
Groveton
Seat of county government.
Established
1850
175 years ago
Largest city
Trinity city
Population 2,450.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Trinity County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Trinity County, Texas from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 729 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Trinity County ranks

Position among the 254 counties of Texas, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn TexasNationally
Population14,384143rd of 2542,131st of 3,144
Land area693.9 sq mi218th of 2541,349th of 3,144
Population density20.7 per sq mi133rd of 2542,220th of 3,144
Median household income$52,018218th of 2542,657th of 3,143

Full data for Trinity County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population14,384Vintage 2025 Population Estimates
Population in 202013,636Vintage 2025 Population Estimates
2020 estimates base?13,604Vintage 2025 Population Estimates
Land area693.9 sq mi2025 Gazetteer Files
Water area20.1 sq mi2025 Gazetteer Files
Total area714 sq mi2025 Gazetteer Files
Population density?20.7 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$52,018American Community Survey 2020-2024 5-Year Estimates
Median home value$119,500American Community Survey 2020-2024 5-Year Estimates
Median age49.2American Community Survey 2020-2024 5-Year Estimates
Households6,078American Community Survey 2020-2024 5-Year Estimates
Housing units8,326American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-150
149 births, 299 deaths
Net migration
+100
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 5 areas bordering Trinity County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Angelina CountyTexas37 mi88,154
Houston CountyTexas36 mi22,316
Polk CountyTexas31 mi53,434
Walker CountyTexas24 mi83,842
San Jacinto CountyTexas15 mi29,488

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 254 counties of Texas

Open the interactive Texas county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.