Pinellas Park is a city located in central Pinellas County, United States. The population was 53,093 at the 2020 census. The city is the fourth …Pinellas Park is a city located in central Pinellas County, United States. The population was 53,093 at the 2020 census. The city is the fourth largest city in Pinellas County. The City of Pinellas Park was incorporated in 1914. It is part of the Tampa–St. Petersburg–Clearwater Metropolitan Statistical Area, most commonly referred to as the Tampa Bay Area.