Area Code 289-833 located in RICHMOND HILL, , ON, more detail is as below. Place NPA (Numbering Plan Area) : 289 NXX (Local Number Prefix) : 833 City : RICHMOND HILL State : ON (Ontario) NXX Use Type : Wireless NXX Intro Version : 2004-08-17 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 : 289833 County Population : 71220 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Coverage Area Name : RICHMOND HILL Latitude : 43.8747 Longitude : -79.4442 ‹ previous : 289-828 next › : 289-836 Telephone Number List 289-833-0000 ~ 289-833-9999