- 3000 State Road 580 Clearwater, Florida 33761 Phone: (727) 725-7956 The Land of the Free and the Home of the Brave Remembering the Victims of September 11, 2001 Visitor number since Nov. 4, 1997 Countryside High School, is located in the northeastern portion of Pinellas County and serves the communities of Clearwater and Safety Harbor. In addition students from the Palm Harbor and East Lake ...www.webcoast.com/chs