4
760 sq miles (1,968 km²).
The largest is Berkeley County with 1,228 square miles.
Berkeley (1,230 square miles)
mecklenburg
819 square miles http://www.answers.com/Spartanburg+County%2C+South+Carolina?cat=travel&gwp=13
706 square miles.
819 square miles.
Sampson County's total area is 947 square miles (2,453 square kilometers).
New Hanover County in North Carolina covers approximately 327 square miles of land.
Union County with a population of about 123,000 and a total area of 640 square miles.
It contains 951 square miles.
That's a bit iffy. Technically, Dare County in the largest county in North Carolina by area, with a total area of 1562 square miles. However, only 384 square miles of that is land. Sampson County, on the other hand, has the largest land area of any county in North Carolina, with 945 square miles of land area (out of 947 miles of total area).