Area Code 575-374 located in CLAYTON, UNION, NM, more detail is as below. Place NPA (Numbering Plan Area) : 575 NXX (Local Number Prefix) : 374 City : CLAYTON County : UNION State : NM (New Mexico) NXX Use Type : Landline FIPS (Federal Information Processing Standards) : 35059 LATA (Local Access Transport Area) : 664 Rate Center : CLAYTON ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 88415 Other Information NPANXX : 575374 County Population : 0 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : E.N.M.R. TELEPHONE COOPERATIVE OCN (Operating Company Number) : 2262 Coverage Area Name : CLAYTON Latitude : 36.4492 Longitude : -103.1834 ‹ previous : 575-373 next › : 575-375 Telephone Number List 575-374-0000 ~ 575-374-9999