Area Code 937-403 located in HILLSBORO, HIGHLAND, OH, more detail is as below. Place NPA (Numbering Plan Area) : 937 NXX (Local Number Prefix) : 403 City : HILLSBORO County : HIGHLAND State : OH (Ohio) NXX Use Type : Landline NXX Intro Version : 2001-10-31 FIPS (Federal Information Processing Standards) : 39071 LATA (Local Access Transport Area) : 328 Rate Center : HILLSBORO ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 45133 Other Information NPANXX : 937403 Switch CLLI (Common Language Location Identifier) : HRTPOHBL0MD Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC - IL OCN (Operating Company Number) : 6534 Coverage Area Name : HILLSBORO Latitude : 39.2007 Longitude : -83.6077 ‹ previous : 937-402 next › : 937-404 Telephone Number List 937-403-0000 ~ 937-403-9999