There are 46 counties in South Carolina. All counties are functioning governmental units, each governed by a county council.
There are 299 county subdivisions in South Carolina. They are all census county divisions (CCDs), which are delineated for statistical purposes, have no legal function, and are not governmental units.
South Carolina Counties - Populated Places in 46 Counties
Also see County: Census Data | Physical, Cultural & Historical Features | ZIP Codes | Land, Farms, & Ranches