Reference Data Rate Center Directory MILLERTON, IA Rate Center MILLERTON — IA Data last updated: March 10, 2026 LATA 632 State IA Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 40.84872755721951, -93.30536550800792 Area Codes 641 Top Carriers Carrier OCN NXX Count GRAND RIVER MUTUAL TEL CO 1888 1
