'St. Johns County, FL' definitions:

St. Johns -- U.S. County in Florida

From: Gazetteer 2000
Name :
St. Johns -- U.S. County in Florida
Population (2000) :
123135
Housing Units (2000) :
58008
Land area (2000) :
609.009524 sq. miles (1577.327360 sq. km)
Water area (2000) :
212.417783 sq. miles (550.159510 sq. km)
Total area (2000) :
821.427307 sq. miles (2127.486870 sq. km)
Located within :
Florida (FL), FIPS 12
Location :
29.881862 N, 81.358139 W