Reference Data Rate Center Directory UNIONVILLE, MI Rate Center UNIONVILLE — MI Data last updated: March 10, 2026 LATA 344 State MI Area Codes 1 Exchanges (NXX) 2 Carriers 1 Coordinates 43.65327839941958, -83.46594740471009 Area Codes 989 Top Carriers Carrier OCN NXX Count MICHIGAN BELL TEL CO 9323 2
