S.C. Code Ann. § 4-7-60: Composition of commission.

The commission shall consist of one person of discretion from each of the old counties, who is opposed to the new county, if there be any opposition, and an equal number of citizens who favor the formation of the new county, to be taken from within the territory of the proposed new county. The representation of the proposed new county and the old county or counties from which the new county is proposed to be formed must be equal in number on the commission.