S.C. Code Ann. § 7-7-390
In McCormick County there are voting precincts numbered and named as follows: Number 1--Mt. Carmel; Number 2--Willington; Number 3- Savannah; Number 4--McCormick No. 1; Number 5--Bethany; Number 6--McCormick No. 2; Number 7--Plum Branch; Number 8--Parksville; Number 9--Modoc; and Number 10- Clarks Hill.
The precinct lines defining the above precincts are as shown on official maps on file with the Division of Research and Statistical Services of the State Budget and Control Board and as shown on certified copies provided to the State Election Commission and the McCormick County Board of Voter Registration by the Division.
Polling places must be determined by the McCormick County Election Commission with the approval of the McCormick County Legislative Delegation.