Area Code 610-204 located in ALLENTOWN, LEHIGH, PA, more detail is as below. Place NPA (Numbering Plan Area) : 610 NXX (Local Number Prefix) : 204 City : ALLENTOWN County : LEHIGH State : PA (Pennsylvania) NXX Use Type : Wireless NXX Intro Version : 1996-10-15 FIPS (Federal Information Processing Standards) : 42077 LATA (Local Access Transport Area) : 228 Rate Center : ALLENTOWN ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 18109 Other Information NPANXX : 610204 Switch CLLI (Common Language Location Identifier) : WBRTPAPPCM8 MSA CBSA (Core Based Statistical Area) : Allentown-Bethlehem-Easton, PA-NJ MSA CBSA Code (Core Based Statistical Area) : 10900 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : SCHUYLKILL MOBILE FONE, INC. OCN (Operating Company Number) : 6739 Coverage Area Name : ALLENTOWN Latitude : 40.6045 Longitude : -75.4677 ‹ previous : 610-204 next › : 610-205 Telephone Number List 610-204-0000 ~ 610-204-9999