Area code 604

Area code 604 is an area code for British Columbia. It was one of the earliest area codes created in 1947. It initially covered the entire province of British Columbia, but after being split by 250 in 1997, it now covers the entire Lower Mainland in British Columbia, including Vancouver. It was overlaid by 778 in 2001, 236 in 2013, and 672 in 2019.