Classification: County
Located in: Oklahoma (OK)
Total Population (2000): 563299
Total Housing Units (2000): 243953
Land Area (square meters): 1477070950
Water Area (square meters): 43295979
Land Area (square miles): 570.300306
Water Area (square miles): 16.716672
Latitude (decimal degrees): 36.124761
Longitude (decimal degrees): -95.938999
FIPS Code: 40
Place FIPS Code: 143