S.C. Code Ann. § 56-3-440

Cities having a population of seventy thousand or more may require the annual registration with the city treasurer of all motor vehicles owned by residents of such cities and may issue annually a sticker, seal, card or a plate of metal or other material without fee or charge, as evidence of such registration, and require its attachment to, and its display upon, such vehicles. Such cities may also require as a condition precedent to such registration the payment of any city taxes then due and payable thereon and may provide by ordinance that the operation on the streets of such cities of any such motor vehicle without the attachment and display thereon of such sticker, seal, card or plate shall be unlawful and impose a penalty for the violation of such ordinance not exceeding a fine of one hundred dollars or imprisonment for not more than thirty days.