Area Code 610-203 located in DEVON, CHESTER, PA, more detail is as below. Place NPA (Numbering Plan Area) : 610 NXX (Local Number Prefix) : 203 City : DEVON County : CHESTER State : PA (Pennsylvania) NXX Use Type : Wireless NXX Intro Version : 1997-04-01 FIPS (Federal Information Processing Standards) : 42029 LATA (Local Access Transport Area) : 228 Rate Center : PHPHSBZN26 ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 19333 Other Information NPANXX : 610203 Switch CLLI (Common Language Location Identifier) : WNRTPAAHCMA MSA CBSA (Core Based Statistical Area) : Philadelphia-Camden-Wilmington, PA-NJ-DE-MD MSA CBSA Code (Core Based Statistical Area) : 37980 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : OMNIPOINT COMMUNICATIONS ENTERPRISES, L.P. OCN (Operating Company Number) : 6626 Coverage Area Name : VILLANOVA Latitude : 40.0433 Longitude : -75.3805 ‹ previous : 610-203 next › : 610-204 Telephone Number List 610-203-0000 ~ 610-203-9999