Callaway County, Missouri's total area is 847 square miles.
The largest county in South Carolina in terms of square miles is Horry County, with an area of around 1,134 square miles.
The largest county in square miles in Kansas is Sedgwick County, with an area of approximately 998 square miles.
Shelby County is the largest county in Tennessee by square miles, covering an area of approximately 784 square miles.
Nye County is the largest county in Nevada in terms of size, covering approximately 18,147 square miles.
Osage County is the largest county in Oklahoma, measuring approximately 2,304 square miles.
It is Ware County with 903 square miles.
Keweenaw County - 5,966 square miles.
Worcester County with 1,513 square miles.
Brewster County is the largest county in Texas at 6,193 square miles.
The largest county in the state of New York is St. Lawrence County which covers about 2,821 square miles.
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