Reference Data Rate Center Directory MILLER, IA Rate Center MILLER — IA Data last updated: March 10, 2026 LATA 632 State IA Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 43.18387920559194, -93.59969325958046 Area Codes 641 Top Carriers Carrier OCN NXX Count WINNEBAGO COOP. TEL. ASSN. - IA 1337 1
