Coos County, OR is 1,806 sq miles (4,678 km²).
Coos County, NH's area is 1,831 square miles.
Coos County which occupies all of the northern New Hamshire Panhandle and is the largest County in area has a total area of 1,831 square miles.
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There are 2,569 square miles in Lincoln County, Nevada.
The smallest county in Texas is Rockwall County, which is about 147 square miles in size.
Marquette County, Michigan is 3,425 square miles.
Darlington County, SC is 567 square miles.
Onondaga County, NY is 806 square miles.
Tillamook County, Oregon is 1,133 square miles.
Hennepin County, Minnesota is 606 square miles.
Jackson County in Florida covers approximately 917 square miles.
Baldwin County, AL's area is 2,027 square miles.