Martin County, Florida

county in Florida, United States

Martin County is a county in the U.S. state of Florida, and was formed on June 13, 1915. As of 2020, 158,431 people lived there.[1] Martin County's seat is Stuart. The county is named after John W. Martin. The state park Jonathan Dickinson State Park is in this county.

Martin County
Martin County Courthouse
Martin County Courthouse
Official seal of Martin County
Map of Florida highlighting Martin County
Location within the U.S. state of Florida
Map of the United States highlighting Florida
Florida's location within the U.S.
Coordinates: 27°05′N 80°24′W / 27.08°N 80.4°W / 27.08; -80.4
Country United States
State Florida
FoundedMay 30, 1925
Named forJohn W. Martin
Largest communityPalm City
 • Total753 sq mi (1,950 km2)
 • Land543 sq mi (1,410 km2)
 • Water209 sq mi (540 km2)  27.8%
 • Total158,431
 • Density292/sq mi (113/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)


  1. 1.0 1.1 "QuickFacts: Martin County, Florida". United States Census Bureau. Retrieved August 10, 2023.

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