| | | Aransas County | TX | 48007 | | Corpus Christi, TX 18580 | Corpus
Christi-Kingsville-Alice,
TX 204 | Outlying | metro county (urban) | recreation | https://maps.google.com/?q=AransasCounty+TX |
| | | Archer County | TX | 48009 | | Wichita Falls, TX 48660 | | Outlying | metro county (urban) | mining-dependent | https://maps.google.com/?q=ArcherCounty+TX |
| | | Armstrong County | TX | 48011 | | Amarillo, TX 11100 | Amarillo-Borger, TX 108 | Outlying | metro county (urban) | farm-dependent | https://maps.google.com/?q=ArmstrongCounty+TX |
| | | Atascosa County | TX | 48013 | | San Antonio-New
Braunfels, TX 41700 | San Antonio-New
Braunfels-Kerrville, TX 484 | Outlying | metro county (urban) | mining-dependent | https://maps.google.com/?q=AtascosaCounty+TX |
| | | Austin County | TX | 48015 | | Houston-Pasadena-The
Woodlands, TX 26420 | Houston-Pasadena, TX 288 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=AustinCounty+TX |
| | | Bandera County | TX | 48019 | | San Antonio-New
Braunfels, TX 41700 | San Antonio-New
Braunfels-Kerrville, TX 484 | Outlying | metro county (urban) | recreation | https://maps.google.com/?q=BanderaCounty+TX |
| | | Bastrop County | TX | 48021 | | Austin-Round Rock-San
Marcos, TX 12420 | | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=BastropCounty+TX |
| | | Bell County | TX | 48027 | | Killeen-Temple, TX 28660 | | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=BellCounty+TX |
| | | Bexar County | TX | 48029 | | San Antonio-New
Braunfels, TX 41700 | San Antonio-New
Braunfels-Kerrville, TX 484 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=BexarCounty+TX |
| | | Bowie County | TX | 48037 | | Texarkana, TX-AR 45500 | | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=BowieCounty+TX |
