Greater Hickory Metro (Alexander,Burke,Catawba,Caldwell,Iredell)
This link sets Statesville apart as a seperate MSA from Hickory, Morganton and Lenoir (commonly referred to as the Unifour). And this link includes Lincolnton in Charlotte's MSA. Of the four sources I consulted each had different counties listed as part of the Charlotte Metro area.
<a href="http://eslmi12.esc.state.nc.us/oes/regions/regions_data/planning_region_f/divisions_planningregionf.html>This link</a> includes Iredell as part of the same planning region as Charlotte. Please note that these are all state of North Carolina links. (for some reason I can't make the html wokr for the last link-I've tried three times).