Hobe Sound, Florida, United States [CDP]; population was 11,507 in 1990; housing units was 5,866 in 1990; location is 27°4'N 80°8'W; land area is 5.47 square miles (3,501 acres); water area is 0.26 square miles (170 acres); FIPS code is 30975 [SourceCBP]