Area Code 509-237 located in EPHRATA, GRANT, WA, more detail is as below. Place NPA (Numbering Plan Area) : 509 NXX (Local Number Prefix) : 237 City : EPHRATA County : GRANT State : WA (Washington) NXX Use Type : Landline NXX Intro Version : 2002-08-04 FIPS (Federal Information Processing Standards) : 53025 LATA (Local Access Transport Area) : 676 Rate Center : EPHRATA ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 98823 Other Information NPANXX : 509237 Switch CLLI (Common Language Location Identifier) : MLWDWAAA3MD MSA CBSA (Core Based Statistical Area) : Moses Lake, WA MSA CBSA Code (Core Based Statistical Area) : 34180 Time Zone : Pacific (GMT -08:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC OCN (Operating Company Number) : 6010 Coverage Area Name : EPHRATA Latitude : 47.3156 Longitude : -119.5561 ‹ previous : 509-236 next › : 509-238 Telephone Number List 509-237-0000 ~ 509-237-9999