Pasco County, Florida in the context of Dade City, Florida

The Tampa Bay area is a major metropolitan area surrounding Tampa Bay on the Gulf Coast of Florida in the United States. It includes the main cities of Tampa, St. Petersburg, and Clearwater. It is the 17th-largest metropolitan area in the United States, with a population of 3,175,275 as of the 2020 U.S. census.

The exact boundaries of the metro area can differ in different contexts. Hillsborough County and Pinellas County (including the cities of Tampa, St. Petersburg, Clearwater, and various smaller communities) make up the most limited definition. This area includes most of the Tampa Bay bayfront, aside from the far southern portion which lies in Manatee County. The U.S. Office of Management and Budget (OMB) defines the Tampa–St. Petersburg–Clearwater Metropolitan Statistical Area (MSA) as including Hillsborough and Pinellas Counties as well as Hernando and Pasco Counties to the north; and it is the 18th-most populous MSA in the country. The MSA was first defined in 1950 as the Tampa-St. Petersburg, Florida Standard Metropolitan Area, and included Hillsborough and Pinellas counties. Pasco County was added to the MSA in 1973. In 1983, Hernando County was added to the MSA and Clearwater was added to the MSA name. The OMB has designated Tampa, St. Petersburg, Clearwater, Largo, and Pinellas Park as the principal cities of the MSA. Unlike most large metropolitan areas, Tampa does not belong to any combined statistical area and is the largest MSA in the United States not to belong to one.

Pinellas is the name of a peninsula located roughly halfway down the west coast of Florida. It forms the western boundary of Tampa Bay and comprises the bulk of Pinellas County. There is a city named Pinellas Park in south Pinellas. The peninsula is bounded on the north by Pasco County, Florida, on the northeast by Hillsborough County, and on the east and south by Tampa Bay. It is bounded on the west by the Intracoastal Waterway and the Gulf of Mexico. The Pinellas peninsula connects to the south with Manatee County via the Sunshine Skyway Bridge and connects with Hillsborough County on the east via the Courtney Campbell Causeway, the Howard Frankland Bridge, and the Gandy Bridge.