St. Johns County, Florida

St. Johns County
County
St. Johns County Courthouse
Flag Seal
Location within the U.S. state of Florida
Florida's location within the U.S.
Coordinates: 29°55′N 81°25′W / 29.91°N 81.41°W / 29.91; -81.41
Country	United States
State	Florida
Founded	July 21, 1821
Named for	San Juan del Puerto
Seat	St. Augustine
Largest community	St. Johns
Area
• Total	822 sq mi (2,130 km2)
• Land	601 sq mi (1,560 km2)
• Water	221 sq mi (570 km2)  26.9%
Population  (2020)[1]
• Total	273,425
• Density	455/sq mi (176/km2)
Time zone	UTC−5 (Eastern)
• Summer (DST)	UTC−4 (EDT)
Website	www.sjcfl.us

St. Johns County is a county in the U.S. state of Florida. It was formed on July 21, 1821. As of 2020, 273,425 people lived there.^[1] St. Johns County's seat is St. Augustine.

1. ↑ ^{1.0 1.1} "QuickFacts: St. Johns County, Florida". United States Census Bureau. Retrieved August 15, 2023.