Texas, known for its vast size and diversity, has a complex system of area codes that reflect its expansive telecommunication needs. The state's first area code, 214, was introduced in 1947. As the population grew and technology advanced, more area codes were added. Texas now has over 25 area codes, including 210 for San Antonio, 512 for Austin, and 713 for Houston. The introduction of each new area code marks a significant development in the state's communication infrastructure, accommodating the growing demand for telephone numbers and services. This expansion not only supports the state's burgeoning population and business needs but also highlights the dynamic nature of telecommunication in the Lone Star State.
Despite being the largest state by area, Texas has one of the highest rates of adults who rely exclusively on mobile at 82.7%. Data from 2023 shows a gain of nearly 13 percentage points since 2019, when 69.9% of adults relied solely on mobile phones. Texas residents who primarily use a wireless phone make up 10.6%, while 2.9% use both mobile and landline. Those who mainly rely on landlines and those who depend solely on landlines have declined to 1.4% and 1.0% respectively—among the lowest in the nation. Adults without telephone service account for 1.3%. Texas's vast geography has not slowed its embrace of mobile-first communication.