What is 289 Area Code?

The 289 area code is a telephone area code in the North American Numbering Plan (NANP) serving Southern Ontario, Canada. Introduced in 2001 as an overlay to the 905 area code, it covers parts of the Greater Toronto Area and surrounding regions. The 289 code has become essential for businesses wanting to establish a trusted local presence in Ontario.

  • Province: Ontario, Canada
  • Major Cities: Hamilton, Mississauga, Oakville, Burlington, Niagara Falls, Oshawa, Vaughan
  • Time Zone: Eastern Standard Time (EST) / Eastern Daylight Time (EDT)
  • Established: 2001 (overlay of 905)
  • Overlay Area Codes: 365, 742
  • Region Population: Approx. 3.6 million
  • Primary Uses: Business phone lines, residential calls, VoIP, and mobile numbers

Population & Demographics of 289 Area Code

The 289 area code spans Southern Ontario, covering parts of the Greater Toronto Area, Hamilton, and the Niagara Peninsula. With a population of about 3.6 million, it includes families, students, professionals, and retirees in both urban and suburban communities.

The region is highly multicultural, with significant South Asian, Chinese, Black, Middle Eastern, and European populations. Large immigrant communities contribute to its cultural vibrancy and economic strength. Home to major universities and industries, the 289 area fosters a balance of youthful energy and professional growth, making it one of Canada’s most dynamic and diverse regions.

289 Area Code Time Zone

The 289 area code operates in the Eastern Time Zone (ET). This time zone follows the same hours as cities like New York, Toronto, and Montreal. Standard time is observed as UTC -5, and during daylight saving time, the offset shifts to UTC -4.