There are nine municipalities within York County: Clover, Fort Mill, Hickory Grove, McConnells, Rock Hill, Sharon, Smyrna, Tega Cay and York. The City of Rock Hill is the commercial and financial center, while the City of York is the county seat.   Situated in the heart of the Carolina Piedmont, just across the South Carolina line from dynamic metro Charlotte, York County brings together the grace and charm of life in a small community with the opportunities and advantages of the big city. Please check out York County's listing of available industrial buildings and sites.