St. Marys, Georgia

St. Marys is a city in Camden County, Georgia, United States, located on the southern border of Camden County on the St. Marys River in the state's Low Country. It had a population of 18,256 at the 2020 census, up from 17,121 at the 2010 census. It is part of the Kingsland, Georgia Micropolitan Statistical Area. The Florida border is just to the south across the river, Cumberland Island National Seashore is to the northeast, and Kingsland, Georgia, is to the west. Jacksonville, Florida, is 38 miles south, and Savannah, Georgia, is 110 miles north.

St. Marys is the ferry departure point for the passenger ferry to Cumberland Island. Other attractions include the St. Marys Submarine Museum, Crooked River State Park, the history walk, and the waterfront park. It is bordered by Kings Bay Naval Submarine Base, home port for several Ohio-class submarines. The city hosts annual Mardi Gras events, an Independence Day Festival, St. Marys Seafood Festival and a Music in the Park Series.

The area was first explored in the mid-16th century by Spanish expeditions as part of the settlement of Spanish Florida. Through the decades, it also came under the colonial influence of Great Britain and finally the United States. By the 2020 census, the city had a population of 18,256.