County Sizes
The largest county in the United States is North Slope Borough, Alaska, which is 94,763 square miles (245,435 sq km).
The largest county in the continental United States is San Bernardino County, California, which is 20,057 square miles (51,961 sq km).
The smallest county in the United States is Kalawao County, Hawaii, which is only 13 square miles (34 sq km).
The smallest county in the continental United States is Bristol County, Rhode Island, at 25 square miles (65 sq mi).
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