S.C. Code Ann. § 5-3-280: Reduction of corporate limits.

Whenever a petition is presented to a city or town council signed by a majority of the resident freeholders of the municipality asking for a reduction of the corporate limits of the city or town, the council shall order an election after not less than ten days' public advertisement. This advertisement shall describe the territory that is proposed to be cut off. If a majority of the qualified electors vote at the election in favor of the release of the territory, the council must issue an ordinance declaring the territory no longer a portion of the municipality and must notify the Secretary of State of the new boundaries of the municipality.