| | Bryan County | OK | 40013 | | Durant, OK 20460 | Dallas-Fort Worth, TX-OK 206 | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=BryanCounty+OK |
| | Collin County | TX | 48085 | 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=CollinCounty+TX |
| | Cooke County | TX | 48097 | | Gainesville, TX 23620 | Dallas-Fort Worth, TX-OK 206 | Central | nonmetro county (rural) | mining-dependent | https://maps.google.com/?q=CookeCounty+TX |
| | Dallas County | TX | 48113 | 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=DallasCounty+TX |
| | Ellis County | TX | 48139 | Dallas-Plano-Irving, TX 19124 | Dallas-Fort
Worth-Arlington, TX 19100 | Dallas-Fort Worth, TX-OK 206 | Central | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=EllisCounty+TX |
| | Fannin County | TX | 48147 | | Bonham, TX 14300 | Dallas-Fort Worth, TX-OK 206 | Central | nonmetro county (rural) | federal/state
government-dependent | https://maps.google.com/?q=FanninCounty+TX |
| | Grayson County | TX | 48181 | | Sherman-Denison, TX 43300 | Dallas-Fort Worth, TX-OK 206 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=GraysonCounty+TX |
| | Henderson County | TX | 48213 | | Athens, TX 11980 | Dallas-Fort Worth, TX-OK 206 | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=HendersonCounty+TX |
| | Hood County | TX | 48221 | | Granbury, TX 24180 | Dallas-Fort Worth, TX-OK 206 | Central | metro county (urban) | mining-dependent | https://maps.google.com/?q=HoodCounty+TX |
| | Hopkins County | TX | 48223 | | Sulphur Springs, TX 44860 | Dallas-Fort Worth, TX-OK 206 | Central | nonmetro county (rural) | nonspecialized | https://maps.google.com/?q=HopkinsCounty+TX |