Area Code 937-203 located in DAYTON, MONTGOMERY, OH, more detail is as below. Place NPA (Numbering Plan Area) : 937 NXX (Local Number Prefix) : 203 City : DAYTON County : MONTGOMERY State : OH (Ohio) NXX Use Type : Wireless NXX Intro Version : 7/6/2010 FIPS (Federal Information Processing Standards) : 39113 LATA (Local Access Transport Area) : 328 Rate Center : DAYTON ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 45423 Other Information NPANXX : 937203 MSA CBSA (Core Based Statistical Area) : Dayton, OH MSA CBSA Code (Core Based Statistical Area) : 19380 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH OCN (Operating Company Number) : 6025 Coverage Area Name : DAYTON Latitude : 39.7586 Longitude : -84.2028 ‹ previous : 937-202 next › : 937-204 Telephone Number List 937-203-0000 ~ 937-203-9999