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| City | Dialing Code | Area Code | |
| Abilene | +1 325 | 325 | |
| Allen | +1 972 | 972 | |
| Amarillo | +1 806 | 806 | |
| Arlington | +1 817 | 817 | |
| Austin | +1 512 | 512 | |
| Baytown | +1 832 | 832 | |
| Beaumont | +1 409 | 409 | |
| Bedford | +1 817 | 817 | |
| Brownsville | +1 956 | 956 | |
| Bryan | +1 979 | 979 | |
| Burleson | +1 817 | 817 | |
| Carrollton | +1 972 | 972 | |
| Cedar Hill | +1 972 | 972 | |
| Cedar Park | +1 512 | 512 | |
| Channelview | +1 832 | 832 | |
| College Station | +1 979 | 979 | |
| Conroe | +1 936 | 936 | |
| Corpus Christi | +1 361 | 361 | |
| Dallas | +1 214 | 214 | |
| Deer Park | +1 832 | 832 | |
| Del Rio | +1 830 | 830 | |
| Denton | +1 817 | 817 | |
| DeSoto | +1 214 | 214 | |
| Duncanville | +1 972 | 972 | |
| Edinburg | +1 956 | 956 | |
| El Paso | +1 915 | 915 | |
| Euless | +1 817 | 817 | |
| Flower Mound | +1 972 | 972 | |
| Fort Worth | +1 682 | 682 | |
| Friendswood | +1 832 | 832 | |
| Frisco | +1 972 | 972 | |
| Galveston | +1 409 | 409 | |
| Garland | +1 214 | 214 | |
| Georgetown | +1 512 | 512 | |
| Grand Prairie | +1 214 | 214 | |
| Grapevine | +1 817 | 817 | |
| Haltom City | +1 817 | 817 | |
| Harlingen | +1 956 | 956 | |
| Houston | +1 281 | 281 | |
| Huntsville | +1 256 | 256 | |
| Hurst | +1 817 | 817 | |
| Irving | +1 972 | 972 | |
| Keller | +1 817 | 817 | |
| La Porte | +1 832 | 832 | |
| Lancaster | +1 661 | 661 | |
| Laredo | +1 956 | 956 | |
| League City | +1 832 | 832 | |
| Lewisville | +1 972 | 972 | |
| Longview | +1 903 | 903 | |
| Lubbock | +1 806 | 806 | |
| Lufkin | +1 936 | 936 | |
| Mansfield | +1 817 | 817 | |
| McAllen | +1 956 | 956 | |
| McKinney | +1 972 | 972 | |
| Mesquite | +1 214 | 214 | |
| Midland | +1 432 | 432 | |
| Mission | +1 956 | 956 | |
| Missouri City | +1 832 | 832 | |
| Nacogdoches | +1 936 | 936 | |
| New Braunfels | +1 830 | 830 | |
| North Richland Hills | +1 817 | 817 | |
| Odessa | +1 432 | 432 | |
| Pasadena | +1 281 | 281 | |
| Pflugerville | +1 512 | 512 | |
| Pharr | +1 956 | 956 | |
| Plano | +1 214 | 214 | |
| Port Arthur | +1 409 | 409 | |
| Richardson | +1 972 | 972 | |
| Rockwall | +1 972 | 972 | |
| Round Rock | +1 512 | 512 | |
| Rowlett | +1 972 | 972 | |
| San Angelo | +1 325 | 325 | |
| San Antonio | +1 210 | 210 | |
| San Juan | +1 787 | 787 | |
| San Marcos | +1 512 | 512 | |
| Spring | +1 832 | 832 | |
| Sugar Land | +1 713 | 713 | |
| Temple | +1 254 | 254 | |
| Texarkana | +1 430 | 430 | |
| Texas City | +1 409 | 409 | |
| The Colony | +1 972 | 972 | |
| The Woodlands | +1 832 | 832 | |
| Tyler | +1 903 | 903 | |
| Victoria | +1 250 | 250 | |
| Waco | +1 254 | 254 | |
| Weslaco | +1 956 | 956 | |
| Wichita Falls | +1 940 | 940 | |
| Wylie | +1 972 | 972 | |
