Locations Meridian serves a geographic area that is largely rural and sparsely populated, encompassing 7,442 square miles with a population of over 543,000 people in Alachua, Baker, Braford, Columbia, Dixie, Gilchrist, Hamilton, Lafayette, Levy, Suwannee and Union Counties. Administrative Offices (Alachua)1565 SW Williston RoadGainesville, FL, 32608 Outpatient Gainesville Office (Alachua)4300 ....