Martin County FL Logo

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.
  • Country: United States
  • State: Florida
  • Founded: May 30, 1925
  • Named for: John W. Martin
  • Seat: Stuart
  • Largest community: Palm City
  • Congressional district: 21st
Data from: en.wikipedia.org