Largest county by population : Miami-Dade, 2,376,014 (2005); Largest county by area: Palm Beach, 2,034 sq mi.
Coconino county 18,661 sq mi
Brewster County is the largest county in The Great State of Texas with 6,193 sq mi
The largest county in New York is St. Lawrence County, which covers an area of 2,821 square miles.
The largest county in Idaho is Idaho County, it is 8,485 sq mi, the county seat is Grangeville, and it is located in central Idaho.
coconino county with 18,661 sq mi
Beaverhead County 5547 sq mi
The largest county is Allen (657sq. mi., 1,702 km²)
Yes, Randolph County is the largest county in West Virginia at 1,040 sq mi (2,694 km²). It is followed closely by Greenbrier County at 1,024 sq mi (2,652 km²) and then Pocahontas County at 942 sq mi (2,440 km²).
Cherry County largest county with 5,961 sq mi and 6,148 pop Douglas County largest pop. 463,585 and only 331 sq miles
Palm Beach County with 2,034 sq mi
Palm beach County 2034 sq mi