Geography of Blanco County
Blanco County sits at roughly 30.27° N and 98.40° W in the Central Texas region of Texas, spanning 711 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 Johnson City, and the county shares boundaries with 7 neighboring counties.
Population & demographics
With approximately 13,581 residents across 711 square miles, Blanco County has a population density of about 19.1 people per square mile. Like much of West and South Texas, the county is sparsely populated, with wide-open country between settlements.
County seat: Johnson City
Johnson City serves as the seat of government for Blanco 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
Blanco County was established in 1858 and was named for The Blanco River. (Blanco is Spanish for "white"). It was carved from territory previously part of Burnet County, Comal County, Gillespie County and Hays County.
Blanco County, Texas — frequently asked questions
Quick answers about Blanco 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 Blanco County, Texas located?+
Blanco County is located in the Central Texas region of Texas at approximately 30.266° N, 98.400° W. It is one of the 254 counties of Texas and carries U.S. Census FIPS code 48031. The interactive map on this page renders the official U.S. Census TIGER boundary for Blanco County over real-world OpenStreetMap, Esri satellite, and topographic basemaps.
How big is Blanco County in square miles?+
Blanco County covers approximately 711 square miles of land in the Central Texas region — a mid-sized Texas county. By land area it ranks 212th 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 Blanco County, Texas?+
Blanco County has a population of approximately 13,581 residents. With 711 square miles of land, that works out to a population density of about 19.1 people per square mile, which is rural for a Texas county. That makes Blanco County the 147th most populous of the 254 counties in Texas.
What is the county seat of Blanco County?+
Johnson City is the county seat of Blanco County, Texas, which was organized in 1858 and named for The Blanco River. (Blanco is Spanish for "white"). Blanco County was originally carved out of Burnet County, Comal County, Gillespie County and Hays County. County government offices, courthouses, and most public records for Blanco County are located in Johnson City.
Which Texas counties border Blanco County?+
Blanco County shares borders with Travis, Hays, Comal, Kendall, Llano, Burnet, and Gillespie 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 Blanco County?+
A free, print-ready PDF map of Blanco 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 Blanco 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 Blanco County, Texas?+
The full 5-digit U.S. Census FIPS code for Blanco County is 48031, made up of Texas state code 48 and the 3-digit county code 031. 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.