Reference DataRate Center DirectoryHILLS, IA Rate CenterHILLS — IAData last updated: October 30, 2026LATA635StateIAArea Codes1Exchanges (NXX)2Carriers2Coordinates41.55504290478176, -91.53340974669395Area Codes319Top CarriersCarrierOCNNXX CountSHARON TEL. CO.12931MCC TELEPHONY LLC593K1