The largest California county by size is San Bernardino County, which is 20,062 square miles.
Union County. 1,039 sq miles
Ware County 903 sq miles
King County, Washington, USA - 2,307 sq miles.
Adair County, KY is 412 sq miles (1,067 km²)
The two biggest countries in the world are: Russia17,075,400 sq km, (6,592,846 sq miles)Canada 9,330,970 sq km, (3,602,707 sq miles)
The five biggest countries in the world are: Russia17,075,400 sq km, (6,592,846 sq miles)Canada 9,330,970 sq km, (3,602,707 sq miles)China 9,326,410 sq km, (3,600,947 sq miles)USA 9.166,600 sq km, (3,539,242 sq miles)Brazil 8,456,510 sq km, (3,265,075 sq miles)
Gilpin county with 150.15 sq mi
1. Ware 903 sq miles 2. Burke 831 sq miles 3. Laurens 813 sq miles 4. Clinch 809 sq miles 5. Charlton 781 sq miles
The three biggest countries in the world are: Russia17,075,400 sq km, (6,592,846 sq miles)Canada 9,330,970 sq km, (3,602,707 sq miles)China 9,326,410 sq km, (3,600,947 sq miles)Russia - 17,098,242 km2Canada - 9,984,670 km2United States - 9,826,675 km2
Harney County, OR is 10,226 sq miles (26,485 km²).
Oglethorpe County, Georgia, USA - 442 square miles.
Cambridgeshire County, UK - 1,308.5 square miles