Reference Data GREENDALE, UT Rate Center GREENDALE — UT Data last updated: March 10, 2026 LATA 660 State UT Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 40.88449055485233, -109.4601062865778 Area Codes 435 Top Carriers Carrier OCN NXX Count UNION TEL. CO. 2297 1
