Area Code 303-500 located in HUDSON, WELD, CO, more detail is as below. Place NPA (Numbering Plan Area) : 303 NXX (Local Number Prefix) : 500 City : HUDSON County : WELD State : CO (Colorado) NXX Use Type : Landline NXX Intro Version : 2005-03-27 FIPS (Federal Information Processing Standards) : 08123 LATA (Local Access Transport Area) : 656 Rate Center : HUDSON ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 80642 Other Information NPANXX : 303500 County Population : 0 Switch CLLI (Common Language Location Identifier) : DNVRCOMAX5Y 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 : LEVEL 3 COMMUNICATIONS, LLC - CO OCN (Operating Company Number) : 6118 Coverage Area Name : HUDSON Latitude : 40.0742 Longitude : -104.6412 ‹ previous : 303-499 next › : 303-501 Telephone Number List 303-500-0000 ~ 303-500-9999