| | | Bosque County | TX | 48035 | | Waco, TX 47380 | | Outlying | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=BosqueCounty+TX |
| | | Brewster County | TX | 48043 | | | | | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=BrewsterCounty+TX |
| | | Briscoe County | TX | 48045 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=BriscoeCounty+TX |
| | | Brooks County | TX | 48047 | | Alice, TX 10860 | Corpus
Christi-Kingsville-Alice,
TX 204 | Outlying | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=BrooksCounty+TX |
| | | Brown County | TX | 48049 | | Brownwood, TX 15220 | | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=BrownCounty+TX |
| | | Burnet County | TX | 48053 | | | | | nonmetro county (rural) | recreation | https://maps.google.com/?q=BurnetCounty+TX |
| | | Calhoun County | TX | 48057 | | Port Lavaca, TX 38920 | Victoria-Port Lavaca, TX 544 | Central | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=CalhounCounty+TX |
| | | Camp County | TX | 48063 | | Mount Pleasant, TX 34420 | | Outlying | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=CampCounty+TX |
| | | Cass County | TX | 48067 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=CassCounty+TX |
| | | Castro County | TX | 48069 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=CastroCounty+TX |
