Geography of Dimmit County
Dimmit County sits at roughly 28.42° N and 99.76° W in the South Texas region of Texas, spanning 1,331 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 Carrizo Springs, and the county shares boundaries with 5 neighboring counties.
Population & demographics
With approximately 8,024 residents across 1,331 square miles, Dimmit County has a population density of about 6.0 people per square mile. Like much of West and South Texas, the county is sparsely populated, with wide-open country between settlements.
County seat: Carrizo Springs
Carrizo Springs serves as the seat of government for Dimmit 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
Dimmit County was established in 1858 and was named for Philip Dimmitt, a major figure in the Texas Revolution. It was carved from territory previously part of Bexar County, Maverick County, Uvalde County and Webb County.
Dimmit County, Texas — frequently asked questions
Quick answers about Dimmit 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 Dimmit County, Texas located?+
Dimmit County is located in the South Texas region of Texas at approximately 28.422° N, 99.757° W. It is one of the 254 counties of Texas and carries U.S. Census FIPS code 48127. The interactive map on this page renders the official U.S. Census TIGER boundary for Dimmit County over real-world OpenStreetMap, Esri satellite, and topographic basemaps.
How big is Dimmit County in square miles?+
Dimmit County covers approximately 1,331 square miles of land in the South Texas region — a mid-sized Texas county. By land area it ranks 29th 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 Dimmit County, Texas?+
Dimmit County has a population of approximately 8,024 residents. With 1,331 square miles of land, that works out to a population density of about 6.0 people per square mile, which is sparsely populated for a Texas county. That makes Dimmit County the 176th most populous of the 254 counties in Texas.
What is the county seat of Dimmit County?+
Carrizo Springs is the county seat of Dimmit County, Texas, which was organized in 1858 and named for Philip Dimmitt, a major figure in the Texas Revolution. Dimmit County was originally carved out of Bexar County, Maverick County, Uvalde County and Webb County. County government offices, courthouses, and most public records for Dimmit County are located in Carrizo Springs.
Which Texas counties border Dimmit County?+
Dimmit County shares borders with Zavala, Maverick, La Salle, Webb, and Frio counties. These 5 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 South Texas region.
Where can I download or print a map of Dimmit County?+
A free, print-ready PDF map of Dimmit 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 Dimmit 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 Dimmit County, Texas?+
The full 5-digit U.S. Census FIPS code for Dimmit County is 48127, made up of Texas state code 48 and the 3-digit county code 127. 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.