Nye County is the largest county in Nevada in terms of size, covering approximately 18,147 square miles.
Kossuth County, Iowa is 973 square miles.
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The smallest county in Texas is Rockwall County, which is about 147 square miles in size.
Las Animas County at 4,775 square miles.
Pike County with a total area of 789 square miles.
The biggest county in Colorado is Las Animas County, which is approximately 4,773 square miles in size.
Alameda County has about 738 square miles of area.
Clay County, Alabama, USA - 606 square miles.
The largest size county that is located in the state of Hawaii is Hawaii county. The county is approximately 4028 square miles.
1000 square miles
Bergen County, NJ covers an area of approximately 247 square miles.