Shelby County is the largest county in Tennessee by square miles, covering an area of approximately 784 square miles.
There are 2,569 square miles in Lincoln County, Nevada.
The largest county in square miles in Kansas is Sedgwick County, with an area of approximately 998 square miles.
The smallest county in Texas is Rockwall County, which is about 147 square miles in size.
Lycoming County with an area of 1,244 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.
Jackson County in Florida covers approximately 917 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.
The are of Fulton County, Georgia is 535 square miles.