Geography of Tom Green County
Tom Green County sits at roughly 31.40° N and 100.46° W in the Central Texas region of Texas, spanning 1,522 square miles of terrain that includes the landscape characteristic of the area — from open ranchland and farmland to small-town main streets. The county's centroid is near San Angelo, and the county shares boundaries with 7 neighboring counties.
Population & demographics
With approximately 120,602 residents across 1,522 square miles, Tom Green County has a population density of about 79.2 people per square mile. Density here reflects a mix of small cities, suburbs, and rural land.
County seat: San Angelo
San Angelo serves as the seat of government for Tom Green County. The county courthouse, commissioners court, district clerk, and primary public records are located here. As with all 254 Texas counties, the county seat is the anchor of civic life and the principal address for elections, permits, and court filings.
History & name origin
Tom Green County was established in 1874 and was named for Thomas Green (1814–1864), a Confederate brigadier general. It was carved from territory previously part of Bexar County.
Tom Green County, Texas — frequently asked questions
Quick answers about Tom Green County geography, population, county seat, neighboring counties, and how to use the maps on this page. Every answer is generated from the official U.S. Census data backing this site.
Where is Tom Green County, Texas located?+
Tom Green County is located in the Central Texas region of Texas at approximately 31.404° N, 100.462° W. It is one of the 254 counties of Texas and carries U.S. Census FIPS code 48451. The interactive map on this page renders the official U.S. Census TIGER boundary for Tom Green County over real-world OpenStreetMap, Esri satellite, and topographic basemaps.
How big is Tom Green County in square miles?+
Tom Green County covers approximately 1,522 square miles of land in the Central Texas region — a large county by Texas standards. By land area it ranks 17th out of 254 Texas counties. The full bounding box of the county is rendered to scale on the interactive map and matches the U.S. Census TIGER 2023 polygon.
What is the population of Tom Green County, Texas?+
Tom Green County has a population of approximately 120,602 residents. With 1,522 square miles of land, that works out to a population density of about 79.2 people per square mile, which is moderately populated for a Texas county. That makes Tom Green County the 41st most populous of the 254 counties in Texas.
What is the county seat of Tom Green County?+
San Angelo is the county seat of Tom Green County, Texas, which was organized in 1874 and named for Thomas Green (1814–1864), a Confederate brigadier general. Tom Green County was originally carved out of Bexar County. County government offices, courthouses, and most public records for Tom Green County are located in San Angelo.
Which Texas counties border Tom Green County?+
Tom Green County shares borders with Irion, Reagan, Schleicher, Sterling, Runnels, Coke, and Concho counties. These 7 neighboring counties are highlighted on the schematic boundary map and linked at the bottom of this page so you can quickly compare population, area, and county seats across the Central Texas region.
Where can I download or print a map of Tom Green County?+
A free, print-ready PDF map of Tom Green County is available from the "Download PDF" button at the top of this page. The printable layout uses authentic U.S. Census TIGER boundary geometry for Tom Green County, includes a Texas locator inset, and is sized for standard 8.5" × 11" Letter paper. For interactive use, the live Leaflet map on this page supports OpenStreetMap, Esri satellite, Esri topographic, and Carto light basemaps with zoom, scale bar, and fullscreen.
What is the FIPS code for Tom Green County, Texas?+
The full 5-digit U.S. Census FIPS code for Tom Green County is 48451, made up of Texas state code 48 and the 3-digit county code 451. This is the same FIPS code used by the U.S. Census Bureau TIGER/Line files, the American Community Survey, and most federal datasets that key on county.