| | | Wharton County | TX | 48481 | | El Campo, TX 20900 | Houston-Pasadena, TX 288 | Central | not in metro; pop
>20k; metro-adjacent | nonspecialized | https://maps.google.com/?q=WhartonCounty+TX |
| | | Washington County | TX | 48477 | | Brenham, TX 14780 | Houston-Pasadena, TX 288 | Central | not in metro; pop > 5k
< 20k; metro-adjacent | manufacturing-dependent | https://maps.google.com/?q=WashingtonCounty+TX |
| | | Waller County | TX | 48473 | | Houston-Pasadena-The
Woodlands, TX 26420 | Houston-Pasadena, TX 288 | Central | in metro of > 1m | manufacturing-dependent | https://maps.google.com/?q=WallerCounty+TX |
| | | Walker County | TX | 48471 | | Huntsville, TX 26660 | Houston-Pasadena, TX 288 | Central | not in metro; pop
>20k; metro-adjacent | federal/state
government-dependent | https://maps.google.com/?q=WalkerCounty+TX |
| | | San Jacinto County | TX | 48407 | | Houston-Pasadena-The
Woodlands, TX 26420 | Houston-Pasadena, TX 288 | Outlying | in metro of > 1m | nonspecialized | https://maps.google.com/?q=SanJacintoCounty+TX |
| | | Montgomery County | TX | 48339 | | Houston-Pasadena-The
Woodlands, TX 26420 | Houston-Pasadena, TX 288 | Outlying | in metro of > 1m | nonspecialized | https://maps.google.com/?q=MontgomeryCounty+TX |
| | | Matagorda County | TX | 48321 | | Bay City, TX 13060 | Houston-Pasadena, TX 288 | Central | not in metro; pop > 5k
< 20k; metro-adjacent | nonspecialized | https://maps.google.com/?q=MatagordaCounty+TX |
| | | Liberty County | TX | 48291 | | Houston-Pasadena-The
Woodlands, TX 26420 | Houston-Pasadena, TX 288 | Outlying | in metro of > 1m | nonspecialized | https://maps.google.com/?q=LibertyCounty+TX |
| | | Harris County | TX | 48201 | | Houston-Pasadena-The
Woodlands, TX 26420 | Houston-Pasadena, TX 288 | Central | in metro of > 1m | mining-dependent | https://maps.google.com/?q=HarrisCounty+TX |
| | | Galveston County | TX | 48167 | | Houston-Pasadena-The
Woodlands, TX 26420 | Houston-Pasadena, TX 288 | Outlying | in metro of > 1m | federal/state
government-dependent | https://maps.google.com/?q=GalvestonCounty+TX |
