sentences:  Iredell County is included in the Charlotte–Concord–Gastonia, NC–SC Metropolitan Statistical Area, as defined in 2013 by the Office of Management and Budget with data from the U.S. Census Bureau.Prior to colonization, three Siouan-speaking tribes associated with a culture group called the Eastern Siouans probably inhabited the area that is now Iredell County.Broken into several smaller tribes, they were the Catawba, the Waccamaw Siouan, the Cheraw, the Winyaw, the Wateree and the Sugaree.