Reference Data Rate Center Directory WALNUT GRV, MN Rate Center WALNUT GRV — MN Data last updated: March 10, 2026 LATA 620 State MN Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 44.22277770591998, -95.46940738595072 Area Codes 507 Top Carriers Carrier OCN NXX Count REDWOOD COUNTY TEL. CO. 1472 1
