Reference Data Rate Center Directory NEW HAVEN, IL Rate Center NEW HAVEN — IL Data last updated: March 10, 2026 LATA 978 State IL Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 37.90799691034738, -88.12745269410398 Area Codes 618 Top Carriers Carrier OCN NXX Count FRONTIER NORTH, INC. - IL 1036 1
