Redistricting in South Carolina after the 2020 census From Ballotpedia Redistricting after the 2020 census Select your state: Redistricting is the process of drawing new congressional and state legislative district boundaries. Upon completion of the 2020 census, South Carolina will draft and enact new district maps. This article will chronicle the 2020 redistricting cycle in South Carolina. South Carolina's seven United States representatives and 170 state legislators are all elected from political divisions called districts. District lines are redrawn every 10 years following completion of the United States census. Federal law stipulates that districts must have nearly equal populations and must not discriminate on the basis of race or ethnicity.