Area Code 234-255 located in TRUMBULL, TRUMBULL, OH, more detail is as below. Place NPA (Numbering Plan Area) : 234 NXX (Local Number Prefix) : 255 City : TRUMBULL County : TRUMBULL State : OH (Ohio) NXX Intro Version : 3/5/2010 Rate Center : GIRARD ZIP Code Count : 0 ZIP Code Frequency : 0 Other Information NPANXX : 234255 County Population : 0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Latitude : None Longitude : None ‹ previous : 234-252 next › : 234-265 Telephone Number List 234-255-0000 ~ 234-255-9999