Area Code 740-634 located in HILLSBORO, HIGHLAND, OH, more detail is as below. Place NPA (Numbering Plan Area) : 740 NXX (Local Number Prefix) : 634 City : HILLSBORO County : HIGHLAND State : OH (Ohio) NXX Use Type : Landline NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 39071 LATA (Local Access Transport Area) : 324 Rate Center : BAINBDG ZIP Code Count : 39 ZIP Code Frequency : 4 ZIP Code : 45133 Other Information NPANXX : 740634 Switch CLLI (Common Language Location Identifier) : BNBROHXARS1 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : CHILLICOTHE TELEPHONE CO. OCN (Operating Company Number) : 0597 Coverage Area Name : BAINBRIDGE Latitude : 39.2252 Longitude : -83.2657 ‹ previous : 740-634 next › : 740-634 Telephone Number List 740-634-0000 ~ 740-634-9999