Hobe Sound is an unincorporated area

Unincorporated area

In law, an unincorporated area is a region of land that is not a part of any municipality.To "incorporate" in this context means to form a municipal corporation, a city, town, or village with its own government. An unincorporated community is usually not subject to or taxed by a municipal government...

 and census-designated place

Census-designated place

A census-designated place is a concentration of population identified by the United States Census Bureau for statistical purposes. CDPs are delineated for each decennial census as the statistical counterparts of incorporated places such as cities, towns and villages...

 (CDP) in Martin County

Martin County, Florida

Martin County is a county in the U.S. state of Florida. As of 2000, the population was 126,731. The U.S. Census Bureau 2008 estimate for the county is 138,660. Its county seat is Stuart, Florida.- History :...

, Florida

Florida

Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. The population was 11,376 at the 2000 census. It is part of the Port St. Lucie

Port St. Lucie, Florida

Port St. Lucie is a city in St. Lucie County, Florida, United States. The population of Port St. Lucie was 88,769 at the 2000 census but grew rapidly during the 2000s. In 2009 the State of Florida estimated the City's population at 155,251. Port St. Lucie forms part of a metropolitan area called...

 Metropolitan Statistical Area.
Hobe Sound is located at 27.076737°N 80.142076°W.

Hobe Sound is an exurban area in southern Martin County

Martin County, Florida

Martin County is a county in the U.S. state of Florida. As of 2000, the population was 126,731. The U.S. Census Bureau 2008 estimate for the county is 138,660. Its county seat is Stuart, Florida.- History :...

 near the Atlantic Ocean

Atlantic Ocean

The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

. It stretches along the coast between Port Salerno and Jonathan Dickinson State Park

Jonathan Dickinson State Park

Jonathan Dickinson State Park is a Florida State Park and historic site located in Martin County, Florida, between Hobe Sound and Tequesta. The park includes a variety of natural communities, such as sand pine scrub, pine flatwoods, mangroves, and river swamps. The Loxahatchee River, which was...

 but does include Jupiter Island

Jupiter Island

Jupiter Island is a barrier island on the coast of Martinand Palm Beach counties, Florida. It is bounded on the east by the Atlantic Ocean, on the north by the St. Lucie Inlet, on the west by the Indian River, and on the south by the Jupiter Inlet...

. Its western border is not clearly defined though most development drops off only a few miles inland at Powerline Road.

According to the United States Census Bureau

United States Census Bureau

The United States Census Bureau is the government agency that is responsible for the United States Census. It also gathers other national demographic and economic data...

, Hobe Sound has a total area of 5.7 square miles (14.8 km²)— 5.5 square miles (14.2 km²) of it is land and 0.3 square mile (0.776996433 km²) of it (4.71%) is water.

Hobe Sound has a subtropical climate.