Reference Data Rate Center Directory FLAT ROCK, IL Rate Center FLAT ROCK — IL Data last updated: March 10, 2026 LATA 978 State IL Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 38.90171100000001, -87.6716922 Area Codes 618 Top Carriers Carrier OCN NXX Count FLAT ROCK TEL. CO-OP, INC. 1012 1
