| | | San Jacinto County | TX | 48407 | | Houston-Pasadena-The
Woodlands, TX 26420 | Houston-Pasadena, TX 288 | Outlying | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=SanJacintoCounty+TX |
| | | San Augustine County | TX | 48405 | | | | | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=SanAugustineCounty+TX |
| | | Sabine County | TX | 48403 | | | | | nonmetro county (rural) | manufacturing-dependent | https://maps.google.com/?q=SabineCounty+TX |
| | | Rusk County | TX | 48401 | | Longview, TX 30980 | | Outlying | metro county (urban) | mining-dependent | https://maps.google.com/?q=RuskCounty+Texas |
| | | Runnels County | TX | 48399 | | | | | nonmetro county (rural) | farm-dependent | https://maps.google.com/?q=RunnelsCounty+TX |
| | | Rockwall County | TX | 48397 | Dallas-Plano-Irving, TX 19124 | Dallas-Fort
Worth-Arlington, TX 19100 | Dallas-Fort Worth, TX-OK 206 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=RockwallCounty+TX |
| | | Robertson County | TX | 48395 | | College Station-Bryan, TX 17780 | | Outlying | metro county (urban) | mining-dependent | https://maps.google.com/?q=RobertsonCounty+TX |
| | | Roberts County | TX | 48393 | | Pampa, TX 37420 | | Outlying | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=RobertsCounty+TX |
| | | Refugio County | TX | 48391 | | | | | nonmetro county (rural) | mining-dependent | https://maps.google.com/?q=RefugioCounty+TX |
| | | Reeves County | TX | 48389 | | Town of Pecos, TX 45880 | | Central | nonmetro county (rural) | mining-dependent | https://maps.google.com/?q=ReevesCounty+Texas |
