. "2.12897e+09"^^ . "217919"^^ . . "140.155"^^ . . "26.9"^^ . "St. Johns County"@en . "1.55658e+09"^^ . "2014Z"^^ . "5.72387e+08"^^ . . . "community" . . "1821-07-21Z"^^ . . "St. Johns County is a county of the U.S. state of Florida. As of the 2010 United States Census, the county's population was 190,039. The county seat and largest incorporated city is St. Augustine.The county was established in 1821. It is one of the two original counties established after Florida was ceded to the United States, at the start of the Florida Territorial period, and corresponded roughly with the former colonial province of East Florida. It was named for the St."@en .