Masonboro was a census-designated place in New Hanover County, North Carolina. The last census count in 2000 was 11,812. Masonboro was located southeast of Wilmington near the Atlantic coast. The Grand Lodge of Ancient Free and Accepted Masons of North Carolina lists the existence of a Masonic Lodge in Masonborough, New Hanover county. The na…Masonboro was a census-designated place in New Hanover County, North Carolina. The last census count in 2000 was 11,812. Masonboro was located southeast of Wilmington near the Atlantic coast. The Grand Lodge of Ancient Free and Accepted Masons of North Carolina lists the existence of a Masonic Lodge in Masonborough, New Hanover county. The name is "Solomon" which was chartered by England in 1735. A post office called Masonboro operated from 1890 until 1891. A large share of the early settlers being Masons caused the name to be selected.