Richmond County, Virginia, USA - 216 square miles.
King County, Washington, has a total area of 2307 square miles.
Lycoming County with an area of 1,244 square miles.
Fulton County, GA's area is 534.75 square miles.
Baldwin County, AL's area is 2,027 square miles.
The smallest county in Utah as far as land area is Davis County. Davis County has 304 square miles of land area and 329 square miles of water. The total area of the county is 634 square miles. Morgan County is the smallest in terms of total area with 611 square miles of area, 609 square miles of land and 2 square miles of water. The above figures come from the U.S. Census Bureau.
Knox County which has Knoxville as its county seat has an area of about 526 square miles.
Meade County has an area of 3,482 square miles.
Bulloch County's area is 673 square miles.
Coweta County, GA's area is 446 square miles.
Montgomery County, MD's area is 507 square miles.
Travis County, TX's area is 1,022 square miles.
Pike County, KY's area is 789 square miles.