Area Code 289-237 located in HAMILTON, , ON, more detail is as below. Place NPA (Numbering Plan Area) : 289 NXX (Local Number Prefix) : 237 City : HAMILTON State : ON (Ontario) NXX Use Type : Wireless NXX Intro Version : 2002-05-01 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 : 289237 County Population : 14794 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Coverage Area Name : HAMILTON Latitude : 43.2527 Longitude : -79.8708 ‹ previous : 289-235 next › : 289-238 Telephone Number List 289-237-0000 ~ 289-237-9999