| | | Denton County | TX | 48121 | Dallas-Plano-Irving, TX 19124 | Dallas-Fort
Worth-Arlington, TX 19100 | Dallas-Fort Worth, TX-OK 206 | Outlying | Metro > 1m | nonspecialized | https://maps.google.com/?q=DentonCounty+TX |
| | | DeWitt County | TX | 48123 | | | | | Non-metro > 5k <
20k metro-adjacent | nonspecialized | https://maps.google.com/?q=DeWittCounty+TX |
| | | Dickens County | TX | 48125 | | | | | Non-metro < 5k
metro-adjacent | farm-dependent | https://maps.google.com/?q=DickensCounty+TX |
| | | Dimmit County | TX | 48127 | | | | | Non-metro > 5K <
20k non-metro-adjacent | mining-dependent | https://maps.google.com/?q=DimmitCounty+TX |
| | | Donley County | TX | 48129 | | | | | Non-metro < 5k
metro-adjacent | farm-dependent | https://maps.google.com/?q=DonleyCounty+TX |
| | | Duval County | TX | 48131 | | | | | Non-metro < 5k
non-metro-adjacent | mining-dependent | https://maps.google.com/?q=DuvalCounty+TX |
| | | Eastland County | TX | 48133 | | | | | Non-metro < 5k
metro-adjacent | mining-dependent | https://maps.google.com/?q=EastlandCounty+TX |
| | | Ector County | TX | 48135 | | Odessa, TX 36220 | Midland-Odessa-Andrews,
TX 372 | Central | Metro < 250k | mining-dependent | https://maps.google.com/?q=EctorCounty+TX |
| | | Edwards County | TX | 48137 | | | | | Non-metro < 5k
non-metro-adjacent | federal/state
government-dependent | https://maps.google.com/?q=EdwardsCounty+TX |
| | | El Paso County | TX | 48141 | | El Paso, TX 21340 | El Paso-Las Cruces, TX-NM 238 | Central | Metro > 250k < 1m | nonspecialized | https://maps.google.com/?q=ElPasoCounty+TX |
