S.C. Code Ann. § 4-3-250

Fairfield County is bounded as follows: on the north by Chester County from which it is divided by a line from the mouth of Rocky Creek on the Catawba River to the mouth of Sandy River on Broad River; on the west and southwest by Broad River by which it is separated from the counties of Union, Newberry and Lexington; on the south by Richland County from which it is separated by Little River from its mouth up to a point about one-half mile above the plantation now or formerly owned by Mr. Shaffer (one mile above the mouth of Shaffer's Creek) and the line running from thence in a direct course to new corner on the Fairfield-Richland line where it crosses the median line of Cedar Creek; thence up the median line of Cedar Creek with its various sources to Simmons' Creek; thence up the median line of Simmons' Creek to a point marked X 3 N. on the bank of Simmons' Fork on Cedar Creek; thence N. 72° 10' E. 23,800 feet to a stake on the Ridgeway-Blythewood Road; thence N. 82° 20' E. 41,338 feet to a stake on the dividing line between Fairfield and Kershaw Counties; on the east by the counties of Kershaw and Lancaster from which it is separated by a line drawn from the last-named point in a northeasterly direction to Wateree River where Cornell's Creek enters it; thence by the Wateree and Catawba Rivers as high as the mouth of Rocky Creek.