Area Code 303-304 located in FORT LUPTON, WELD, CO, more detail is as below. Place NPA (Numbering Plan Area) : 303 NXX (Local Number Prefix) : 304 City : FORT LUPTON County : WELD State : CO (Colorado) NXX Use Type : Wireless NXX Intro Version : 2005-03-27 FIPS (Federal Information Processing Standards) : 08123 LATA (Local Access Transport Area) : 656 Rate Center : FORTLUPTON ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 80621 Other Information NPANXX : 303304 County Population : 0 Switch CLLI (Common Language Location Identifier) : DNVRCOMDCM8 MSA CBSA (Core Based Statistical Area) : Greeley, CO MSA CBSA Code (Core Based Statistical Area) : 24540 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC OCN (Operating Company Number) : 6010 Coverage Area Name : FORT LUPTON Latitude : 40.0839 Longitude : -104.8061 ‹ previous : 303-302 next › : 303-305 Telephone Number List 303-304-0000 ~ 303-304-9999