Beach at Boca Grande. Boca Grande is a small residential community on Gasparilla Island, in southwest Florida. Gasparilla Island is a part of both Charlotte and Lee Counties, while the actual village of Boca Grande, which is home to many seasonal and some year-round residents, is entirely in the Lee County portion of the island. It is part of the Cape Coral–Fort Myers Metropolitan Statistical Area. Boca Grande is known for its charming authentic downtown, sugar sand beaches, blue water and world class fishing.