How to call Canada from the USA:

dial 1 + area code + local phone number

Calling from another country?

The time in Ottawa, Canada is now 03:08:33pm

1 - Country Code for Canada
area code - 3 digit area codes
phone number - 7 digits
US to Canada dialing format: 1 ??? ??? ????
this country is part of the North American Numbering Plan - NANP (calling it works like a US state to state call)

Province	City	Area Code(s)
Alberta	Banff, Calgary, Lethbridge, Medicine Hat	403, 587, 825
Alberta	Edmonton, Grande Prairie, Jasper, Peace River	780, 587, 825
British Columbia	Abbotsford, Richmond, Vancouver, Whistler	604, 778, 236
British Columbia	Victoria	250, 778, 236
Manitoba	Winnipeg	204, 431
New Brunswick	Single code	506
Newfoundland	Single code	709
Northwest Territories	Single code	867
Nova Scotia	Single code	902
Nunavut	Single code	867
Ontario	Hamilton	905, 289, 365
	London, Windsor	519, 226, 548
	North Bay	705, 249
	Ottawa	613, 343
	Thunder Bay	807
	Toronto	416, 647, 437
Prince Edward Island	Single code	902
Quebec	Quebec City	418, 581
	Laval	450, 579
	Montreal	514, 438
	Gatineau, Sherbrooke	819, 873
Saskatchewan	Regina, Saskatoon	306, 639
Yukon Territory	Single code	867
Click here for a map of Canadian area codes