Marion County is the largest county in Indiana with an estimated population of 903,393 as of the 2010 U.S. Census. Allen County is the largest county in Indiana with total land area of 657 square miles.
Clark County, Indiana covers approximately 375 square miles in total.
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.
Marion County has the largest county population in Indiana.
Shelby County is the largest county in Tennessee by square miles, covering an area of approximately 784 square miles.
The square mileage of Allen County, Indiana is approximately 660 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.
Posey County, Indiana consists of 419 square miles.
It is Ware County with 903 square miles.
Keweenaw County - 5,966 square miles.