Geography of Hamilton County
Hamilton County sits at roughly 31.70° N and 98.11° W in the Central Texas region of Texas, spanning 836 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 Hamilton, and the county shares boundaries with 6 neighboring counties.
Population & demographics
With approximately 8,680 residents across 836 square miles, Hamilton County has a population density of about 10.4 people per square mile. Like much of West and South Texas, the county is sparsely populated, with wide-open country between settlements.
County seat: Hamilton
Hamilton serves as the seat of government for Hamilton 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
Hamilton County was established in 1856 and was named for James Hamilton Jr., governor of South Carolina (1830–1832) who gave financial aid to the Republic of Texas. It was carved from territory previously part of Bosque County, Comanche County and Lampasas County.
Hamilton County, Texas — frequently asked questions
Quick answers about Hamilton 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 Hamilton County, Texas located?+
Hamilton County is located in the Central Texas region of Texas at approximately 31.705° N, 98.111° W. It is one of the 254 counties of Texas and carries U.S. Census FIPS code 48193. The interactive map on this page renders the official U.S. Census TIGER boundary for Hamilton County over real-world OpenStreetMap, Esri satellite, and topographic basemaps.
How big is Hamilton County in square miles?+
Hamilton County covers approximately 836 square miles of land in the Central Texas region — a mid-sized Texas county. By land area it ranks 189th 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 Hamilton County, Texas?+
Hamilton County has a population of approximately 8,680 residents. With 836 square miles of land, that works out to a population density of about 10.4 people per square mile, which is rural for a Texas county. That makes Hamilton County the 175th most populous of the 254 counties in Texas.
What is the county seat of Hamilton County?+
Hamilton is the county seat of Hamilton County, Texas, which was organized in 1856 and named for James Hamilton Jr., governor of South Carolina (1830–1832) who gave financial aid to the Republic of Texas. Hamilton County was originally carved out of Bosque County, Comanche County and Lampasas County. County government offices, courthouses, and most public records for Hamilton County are located in Hamilton.
Which Texas counties border Hamilton County?+
Hamilton County shares borders with Mills, Bosque, Lampasas, Coryell, Comanche, and Erath counties. These 6 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 Hamilton County?+
A free, print-ready PDF map of Hamilton 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 Hamilton 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 Hamilton County, Texas?+
The full 5-digit U.S. Census FIPS code for Hamilton County is 48193, made up of Texas state code 48 and the 3-digit county code 193. 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.