Boone County » Directory Boone County » Directory Go back to directory. Add to Address Book. Boone County Boone CountyGIS Department Contact: Nathan Mattox, GIS Manager, MGISAC Immediate Past Chair Information Technology Department 801 E Walnut, Rm 220 Columbia MO 65201 work Work Phone: 573-886-4325work Work Email: nmattox@boonecountymo.orgINTERNET Categories: County Updated 3 weeks ago.