Orange Beach is located on Perdido Key along the Gulf of Mexico, and is the easternmost community on Alabama’s Gulf Coast, with the community of Perdido Key, Florida bordering it to the east. The city of Gulf Shores is to the west.
According to the United States Census Bureau, the city has a total area of 15.931 square miles (41.26 km2), of which 14.716 square miles (38.11 km2) is land and 1.215 square miles (3.15 km2) is water.

