Area Code 302-203 located in WILMINGTON, NEW CASTLE, DE, more detail is as below. Place NPA (Numbering Plan Area) : 302 NXX (Local Number Prefix) : 203 City : WILMINGTON County : NEW CASTLE State : DE (Delaware) NXX Use Type : Wireless NXX Intro Version : 11/28/2011 FIPS (Federal Information Processing Standards) : 10003 LATA (Local Access Transport Area) : 228 Rate Center : WILMINGTON ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 19802 Other Information NPANXX : 302203 County Population : 0 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 : VERIZON DELAWARE, INC. OCN (Operating Company Number) : 9210 Coverage Area Name : WILMINGTON Latitude : 39.7453 Longitude : -75.5447 ‹ previous : 302-200 next › : 302-204 Telephone Number List 302-203-0000 ~ 302-203-9999