Area Code 505-374 located in CLAYTON, UNION, NM, more detail is as below. Place NPA (Numbering Plan Area) : 505 NXX (Local Number Prefix) : 374 City : CLAYTON County : UNION State : NM (New Mexico) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 35059 Rate Center : CLAYTON ZIP Code Count : 1355 ZIP Code Frequency : 93 ZIP Code : 88415 Other Information NPANXX : 505374 Switch CLLI (Common Language Location Identifier) : CLYTNMMARS0 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Latitude : None Longitude : None ‹ previous : 505-374 next › : 505-375 Telephone Number List 505-374-0000 ~ 505-374-9999