Hobe Sound is an unincorporated area and census-designated place (CDP) in Martin County, Florida, United States, located along Florida's Treasure Coast. The population was 11,521 at the 2010 census.
Hobe Sound is located at 27°04′36″N 80°08′31″W.
Hobe Sound is an exurban area in southern Martin County near the Atlantic Ocean. It stretches along the coast between Port Salerno and Jonathan Dickinson State Park and includes Jupiter Island. Hobe Sound is home to Hobe Sound Public Beach, one of Martin County's four guarded beaches.
Hobe Sound is the anglicized form of the name of a village of the Jaega, a Native American group that lived in the area before European settlement. The Spanish recorded the village name as Jobe or Jove [ˈxoβe]. Jonathan Dickinson, whose party was shipwrecked near the town in 1696, spelled the name of the village "Hoe-bey".
Parts of Hobe Sound were included in the 12,000 acres (49 km2) of the Gomez grant given by Spain to Don Eusebio in 1815. In 1821, Gomez sold 8,000 acres (32 km2), including Jupiter Island, to Joseph Delespine for $1 per acre.
Shortly after the turn of the 20th century, Henry Flagler built his railroad along the east coast of Florida passing through Hobe Sound.