Sewall's Point is a town located on the peninsula of the same name in Martin County, Florida, United States. The population was 1,991 at the 2020 census. Both the town and the peninsula are named for Capt. Henry Edwin Sewall. It is an eastern suburb of Stuart, which is the county seat of Martin County.

Martin County is a county located in the southeastern part of the state of Florida, in the United States. As of the 2020 census, the population was 158,431. Its county seat is Stuart. Martin County is in the Port St. Lucie, FL Metropolitan Statistical Area.