Area Code 303-350 located in BROOMFIELD, BROOMFIELD, CO, more detail is as below. Place NPA (Numbering Plan Area) : 303 NXX (Local Number Prefix) : 350 City : BROOMFIELD County : BROOMFIELD State : CO (Colorado) NXX Use Type : Landline NXX Intro Version : 1999-10-13 FIPS (Federal Information Processing Standards) : 08014 LATA (Local Access Transport Area) : 656 Rate Center : DENVER ZIP Code Count : 3 ZIP Code Frequency : 11 ZIP Code : 80020 Other Information NPANXX : 303350 County Population : 0 Switch CLLI (Common Language Location Identifier) : DNVRCOMDCM8 MSA CBSA (Core Based Statistical Area) : Denver-Aurora, CO MSA CBSA Code (Core Based Statistical Area) : 19740 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 : DENVER Latitude : 39.7467 Longitude : -104.9948 ‹ previous : 303-350 next › : 303-350 Telephone Number List 303-350-0000 ~ 303-350-9999