Area code 604 is one of Canada’s original area codes, assigned in 1947 to cover the entire province of British Columbia. Today, it primarily serves the Lower Mainland and Vancouver metro area. Due to high population growth, area codes 778, 236, and 672 have been overlaid, making ten-digit dialing standard. Vancouver is a major hub for technology, film, trade, and tourism. Despite the multiple overlays, 604 retains significant prestige and is often preferred in business and personal branding. It’s a deeply embedded part of the region’s identity.