When 813 was created in 1953, it covered all of west Florida. Successive splits — 941 (1996) for Sarasota and southwest Florida, and 727 (1998) for Pinellas County (St. Petersburg, Clearwater) — reduced its territory to just Hillsborough County (Tampa). Unlike most major-metro codes, 813 has not been overlaid — making it one of the few preserved single-code city centers. A 813 number remains tightly identified with Tampa proper and the city's hospitality, port, and finance sectors.