The state of Texas, USA is currently served by a total of 28 area codes:
These Texas area codes overlay (cover the same geographic area). The first code listed is the parent code. Overlay area codes are added when no more phone numbers are available in an existing Numbering Plan Area.
| City | County | Area code(s) |
|---|---|---|
| Abilene | Taylor | 325 |
| Allen | Collin | 214/972/469/945 |
| Amarillo | Randall | 806 |
| Arlington | Tarrant | 817/682 |
| Austin | Hays | 512/737 |
| Baytown | Harris | 713/281/832/346 |
| Beaumont | Jefferson | 409 |
| Bedford | Tarrant | 817/682 |
| Brownsville | Cameron | 956 |
| Bryan | Brazos | 979 |
| Burleson | Johnson | 817/682 |
| Carrollton | Dallas | 214/972/469/945 |
| Cedar Hill | Dallas | 214/972/469/945 |
| Cedar Park | Williamson | 512/737 |
| Channelview | Harris | 713/281/832/346 |
| Cibolo | Bexar/Guadalupe | 210/726 |
| Cleburne | Johnson | 817/682 |
| College Station | Brazos | 979 |
| Conroe | Montgomery | 936 |
| Copperas Cove | Coryell | 254 |
| Corpus Christi | Nueces | 361 |
| Dallas | Collin | 214/972/469/945 |
| Deer Park | Harris | 713/281/832/346 |
| Del Rio | Val Verde | 830 |
| Denton | Denton | 940 |
| Desoto | Dallas | 214/972/469/945 |
| Duncanville | Dallas | 214/972/469/945 |
| Edinburg | Hidalgo | 956 |
| El Paso | El Paso | 915 |
| Euless | Tarrant | 817/682 |
| Flower Mound | Denton | 214/972/469/945 |
| Fort Worth | Tarrant | 817/682 |
| Friendswood | Galveston | 713/281/832/346 |
| Frisco | Collin | 214/972/469/945 |
| Galveston | Galveston | 409 |
| Garland | Dallas | 214/972/469/945 |
| Georgetown | Williamson | 512/737 |
| Grand Prairie | Dallas | 214/972/469/945 |
| Grapevine | Tarrant | 817/682 |
| Haltom City | Tarrant | 817/682 |
| Harker Heights | Bell | 254 |
| Harlingen | Cameron | 956 |
| Houston | Harris | 713/281/832/346 |
| Huntsville | Walker | 936 |
| Hurst | Tarrant | 817/682 |
| Irving | Dallas | 214/972/469/945 |
| Keller | Tarrant | 817/682 |
| Killeen | Bell | 254 |
| Kyle | Hays | 512/737 |
| La Porte | Harris | 713/281/832/346 |
| Lancaster | Dallas | 214/972/469/945 |
| Laredo | Webb | 956 |
| League City | Galveston | 713/281/832/346 |
| Leander | Travis | 512/737 |
| Lewisville | Denton | 214/972/469/945 |
| Little Elm | Denton | 214/972/469/945 |
| Longview | Gregg | 903/430 |
| Lubbock | Lubbock | 806 |
| Lufkin | Angelina | 936 |
| Mansfield | Tarrant | 817/682 |
| McAllen | Hidalgo | 956 |
| McKinney | Collin | 214/972/469/945 |
| Mesquite | Dallas | 214/972/469/945 |
| Midland | Midland | 432 |
| Midlothian | Ellis | 214/972/469/945 |
| Mission | Hidalgo | 956 |
| Missouri City | Fort Bend | 713/281/832/346 |
| Nacogdoches | Nacogdoches | 936 |
| New Braunfels | Comal | 830 |
| North Richland Hills | Tarrant | 817/682 |
| Odessa | Ector | 432 |
| Pasadena | Harris | 713/281/832/346 |
| Pearland | Brazoria | 713/281/832/346 |
| Pflugerville | Travis | 512/737 |
| Pharr | Hidalgo | 956 |
| Plano | Collin | 214/972/469/945 |
| Port Arthur | Jefferson | 409 |
| Richardson | Dallas | 214/972/469/945 |
| Rockwall | Rockwall | 214/972/469/945 |
| Rosenberg | Fort Bend | 713/281/832/346 |
| Round Rock | Williamson | 512/737 |
| Rowlett | Dallas | 214/972/469/945 |
| San Angelo | Tom Green | 325 |
| San Antonio | Bexar | 210/726 |
| San Juan | Hidalgo | 956 |
| San Marcos | Hays | 512/737 |
| Schertz | Bexar/Comal/Guadalupe | 210/726 |
| Sherman | Grayson | 903/430 |
| Southlake | Tarrant | 817/682 |
| Spring | Harris | 713/281/832/346 |
| Sugar Land | Fort Bend | 713/281/832/346 |
| Temple | Bell | 254 |
| Texarkana | Bowie | 903/430 |
| Texas City | Galveston | 409 |
| The Colony | Denton | 214/972/469/945 |
| The Woodlands | Montgomery | 713/281/832/346 |
| Tyler | Smith | 903/430 |
| Victoria | Victoria | 361 |
| Waco | McLennan | 254 |
| Waxahachie | Ellis | 214/972/469/945 |
| Weatherford | Parker | 817/682 |
| Weslaco | Hidalgo | 956 |
| Wichita Falls | Wichita | 940 |
| Wylie | Collin | 214/972/469/945 |