Hillsborough County, Florida, USA - 1,266 square miles.
Putnam County, Florida has a total area of 827 square miles.
Miami-Dade County in Florida covers an area of approximately 2,431 square miles.
Jackson County in Florida covers approximately 917 square miles.
The largest county in Florida by area is Palm Beach County, at 2,578 square miles.
Duval County in Florida has a total area of 918 square miles.
Seminole County in Florida covers approximately 345 square miles.
Broward County in Florida covers approximately 1,322 square miles.
Palm Beach County is the largest county in Florida and, according the U.S. Census Bureau, measures 2,386 square miles (6,181 km²).
Broward County in Florida spans approximately 1,323 square miles.
Pine Island in Lee County, Florida is approximately 18 miles long and 2 miles wide, totaling around 33 square miles in size.
Jacksonville is 885 square miles.