What is what area code is 813?

The area code 813 is located in the state of Florida in the United States. It covers the central western part of the state, including the city of Tampa and its surrounding suburbs. Area code 813 was first introduced in 1965 as part of the original North American Numbering Plan. It is one of the original area codes established in Florida. Over the years, the area code has remained an important and heavily populated region in the state, serving a large number of residents and businesses in the Tampa area.