Original: Geography According to the U.S. Census Bureau , the county has a total area of 1,644 square miles ( 4,258 km ² ) , of which , 1,233 square miles ( 3,194 km ² ) of it is land and 411 square miles ( 1,064 km ² ) of it ( 25.0 % ) is water .
Simplified: Geography According to the U.S. Census Bureau , the county has a total area of , of which , of it is land and of it ( 25.00 % ) is water .