St. Marys is a city in Camden County, Georgia, United States — located on the southern border of Camden County on the St. Marys River, with the Florida border just to the south across the river; Cumberland Island National Seashore to the northeast; Kingsland, Georgia to the west; Jacksonville, Florida 38 miles to the south and Savannah, Georgia 110 miles to the north. The city is home to The National Seashore's visitor center and boat access; the... Show more

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