Lake Blue Cypress is located at 27°45′15″N 80°44′37″W. It is the headwaters of the St. Johns River. The lake is 21 mi (34 km) in diameter and it is over 6,500 acres (26 km²) in size. It is directly west of Fellsmere, 11 miles away. To the north is Palm Bay, to the west is Yeehaw Junction, and to the east is Fellsmere.