Reference Data Rate Center Directory NORTHFIELD, WI Rate Center NORTHFIELD — WI Data last updated: March 10, 2026 LATA 352 State WI Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 44.45894480973711, -91.09921401270316 Area Codes 715 Top Carriers Carrier OCN NXX Count TRI-COUNTY TEL. COOP., INC. 0960 1
