Area Code 740-378 located in COOLVILLE, ATHENS, OH, more detail is as below. Place NPA (Numbering Plan Area) : 740 NXX (Local Number Prefix) : 378 City : COOLVILLE County : ATHENS State : OH (Ohio) NXX Use Type : Landline NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 39009 LATA (Local Access Transport Area) : 324 Rate Center : COOLVILLE ZIP Code Count : 55 ZIP Code Frequency : 22 ZIP Code : 45723 Other Information NPANXX : 740378 Switch CLLI (Common Language Location Identifier) : RDVLOHXARS1 MSA CBSA (Core Based Statistical Area) : Athens, OH MSA CBSA Code (Core Based Statistical Area) : 11900 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : WINDSTREAM WESTERN RESERVE, INC. OCN (Operating Company Number) : 0666 Coverage Area Name : COOLVILLE Latitude : 39.2244 Longitude : -81.8006 ‹ previous : 740-377 next › : 740-378 Telephone Number List 740-378-0000 ~ 740-378-9999