Area Code 585-243 located in MOUNT MORRIS, LIVINGSTON, NY, more detail is as below. Place NPA (Numbering Plan Area) : 585 NXX (Local Number Prefix) : 243 City : MOUNT MORRIS County : LIVINGSTON State : NY (New York) NXX Use Type : Landline NXX Intro Version : 2002-02-13 FIPS (Federal Information Processing Standards) : 36051 LATA (Local Access Transport Area) : 974 Rate Center : GENESEO ZIP Code Count : 57 ZIP Code Frequency : 2 ZIP Code : 14510 Other Information NPANXX : 585243 County Population : 0 Switch CLLI (Common Language Location Identifier) : GENSNYXADS0 MSA CBSA (Core Based Statistical Area) : Rochester, NY MSA CBSA Code (Core Based Statistical Area) : 40380 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : FRONTIER TELEPHONE OF ROCHESTER INC OCN (Operating Company Number) : 0121 Coverage Area Name : GENESEO Latitude : 42.7961 Longitude : -77.8186 ‹ previous : 585-243 next › : 585-243 Telephone Number List 585-243-0000 ~ 585-243-9999