Area Code 734-205 located in ANN ARBOR, WASHTENAW, MI, more detail is as below. Place NPA (Numbering Plan Area) : 734 NXX (Local Number Prefix) : 205 City : ANN ARBOR County : WASHTENAW State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 26161 LATA (Local Access Transport Area) : 340 Rate Center : ANN ARBOR ZIP Code Count : 3 ZIP Code Frequency : 38 ZIP Code : 48108 Other Information NPANXX : 734205 Switch CLLI (Common Language Location Identifier) : DTRTMIDODS0 MSA CBSA (Core Based Statistical Area) : Ann Arbor, MI MSA CBSA Code (Core Based Statistical Area) : 11460 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : MCI WORLDCOM COMMUNICATIONS, INC. - MI OCN (Operating Company Number) : 7279 Coverage Area Name : ANN ARBOR Latitude : 42.2833 Longitude : -83.7403 ‹ previous : 734-205 next › : 734-206 Telephone Number List 734-205-0000 ~ 734-205-9999