Area code 909 covers parts of Southern California’s Inland Empire, including cities like San Bernardino, Ontario, Chino, and Rancho Cucamonga. Introduced in 1992 as a split from the 714 area code, 909 services a rapidly urbanizing region that lies east of Los Angeles and Orange County. Once seen as a suburban outlier, the Inland Empire has grown into a densely populated and economically important area, with expanding logistics centers, warehouses, distribution hubs, and residential development. While traditionally known for its working-class roots, the area now hosts corporate campuses, universities (such as Cal State San Bernardino), and significant real estate growth. The 909 area code has even been referenced in pop culture as representing “the IE” lifestyle—once unfairly stereotyped, but increasingly seen as affordable and dynamic. As of 2004, part of the original 909 area was split into 951 to meet demand, but 909 remains in wide use and strongly associated with the San Bernardino Valley. For locals and businesses, a 909 number signifies deep roots in the Inland Empire’s ongoing transformation. It remains a marker of resilience, opportunity, and Southern California’s ever-shifting geography of growth.