The Berkeley County School District is a school district with in Berkeley County, South Carolina. It is based in Moncks Corner, South Carolina and serves suburbs of Charleston, South Carolina and northern portions of that city. Berkeley County is a county in the state of South Carolina. ... Moncks Corner is the county seat of Berkeley County, South Carolina. ... Flag Seal Nickname: The Holy City, The Palmetto City Motto: Aedes Mores Juraque Curat (She cares for her temples, customs, and rights) Location Location of Charleston in South Carolina. ...