S.C. Code § 4-3-530
York County is bounded as follows: on the north by the North Carolina line; on the west by the eastern line of Cherokee County, mentioned in 4-3-110; on the south by Chester County from which it is divided by a line beginning at a hickory tree, on the southwest side of the Catawba River, and about 10 chains above the mouth of Ferrill's Creek, and running nearly S. 88° W., by an old line called and known by the name of the line of the new acquisition, to an ash and black gum on the bank of Broad River, on land now or formerly owned by Robert Elliott; on the east by the county of Lancaster and the North Carolina line; less the following territory transferred to Cherokee County by act of the General Assembly, approved February 11 1921, to wit: beginning at a stake in a road in the State line on top of a mountain at Burned Grocery and running thence S. 43 1/2 ° W. 224.00 chains to a large pine at the northeast end of Brown's Mountain; thence with the Cherokee County line N. 2 1/2 ° W. 152.00 chains to now or formerly B. O., E. A. Patterson's corner in the State line; thence S. 86° E. 165.00 chains with the State line to the beginning corner containing two square miles. The metes and bounds and location and lines are more accurately set forth on a plat bearing the name of A. P. Falls, surveyor, filed in the office of the Governor.
S.C. Code § 4-3-530