Area Code 303-439 located in BROOMFIELD, BROOMFIELD, CO, more detail is as below. Place NPA (Numbering Plan Area) : 303 NXX (Local Number Prefix) : 439 City : BROOMFIELD County : BROOMFIELD State : CO (Colorado) NXX Use Type : Landline NXX Intro Version : 1994-09-11 FIPS (Federal Information Processing Standards) : 08014 LATA (Local Access Transport Area) : 656 Rate Center : DENVER ZIP Code Count : 1012 ZIP Code Frequency : 56 ZIP Code : 80020 Other Information NPANXX : 303439 County Population : 0 Switch CLLI (Common Language Location Identifier) : BRFDCOMADS0 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 : QWEST CORPORATION OCN (Operating Company Number) : 9636 Coverage Area Name : DENVER Latitude : 39.9148 Longitude : -105.0535 ‹ previous : 303-439 next › : 303-440 Telephone Number List 303-439-0000 ~ 303-439-9999