Some of the cities in each region are listed below - if your city isn't in the list, you
or just pick the closest city.
Big Bend Country - El Paso, Midland, Odessa, Del Rio, Fort Stockton, Alpine, Marfa
Gulf Coast - Houston, Beaumont, Corpus Christi, Brownsville, Victoria, Kingsville
Hill Country - Austin, Fredericksburg, New Braunfels, Uvalde, Brownwood, Ozona
Panhandle Plains - Abilene, San Angelo, Wichita Falls, Amarillo, Lubbock, Mineral Wells
Piney Woods - Tyler, Longview, Palestine, Huntsville, Nacogdoches, Texarkana
Prairies & Lakes - Dallas, Fort Worth, Waco, Killeen, College Station, Brenham, Gonzales
South Texas Plains - San Antonio, Goliad, Laredo, McAllen, Eagle Pass