Area Code 905-603 located in STREETSVILLE, , ON, more detail is as below. Place NPA (Numbering Plan Area) : 905 NXX (Local Number Prefix) : 603 City : STREETSVILLE State : ON (Ontario) NXX Use Type : Landline NXX Intro Version : 2001-06-30 LATA (Local Access Transport Area) : 851 ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. Other Information NPANXX : 905603 Coverage Area Name : STREETSVILLE Latitude : 43.5777 Longitude : -79.7105 ‹ previous : 905-602 next › : 905-604 Telephone Number List 905-603-0000 ~ 905-603-9999