Las Animas County at 4,775 square miles.
Las Animas County is the largest county in the state of Colorado. 4,775 square miles (12,368 km²)
In terms of population the 4 largest counties in Colorado are:El Paso - 622,263Denver - 600,158Arapahoe - 572,003Jefferson - 534,543In terms square miles it is:Las Animas - 4,773Moffat - 4,743Weld - 3,987Mesa - 3,329
The largest county in square miles in Kansas is Sedgwick County, with an area of approximately 998 square miles.
The largest is Berkeley County with 1,228 square miles.
The biggest county in Colorado is Las Animas County, which is approximately 4,773 square miles in size.
Shelby County is the largest county in Tennessee by square miles, covering an area of approximately 784 square miles.
The largest is Nye County with 18,147 square miles.
Osage County is the largest county in Oklahoma, measuring approximately 2,304 square miles.
Las Animas County at 4,773.27 square miles. Almost four Rhode Islands can be fitted into Las Animas County.
4,775 square miles
It is Ware County with 903 square miles.
Keweenaw County - 5,966 square miles.