604 Area Code: Vancouver, BC | Location & Time Zone

The 604 area code is one of British Columbia’s most recognizable telephone area codes, serving the greater Vancouver region and surrounding communities. As one of Canada’s original area codes established in 1947, the 604 area code has become synonymous with Vancouver and the Lower Mainland, covering some of the most densely populated areas in Western Canada. This comprehensive guide explores everything you need to know about the 604 area code, including its geographic coverage, time zone information, history, and how to dial numbers within this region.

What is the 604 Area Code?

The 604 area code is a telephone area code in the North American Numbering Plan (NANP) that serves the Lower Mainland region of British Columbia, Canada. Established as one of the original 86 area codes in October 1947, 604 initially covered the entire province of British Columbia. Today, after several splits and the addition of overlay codes, 604 primarily serves the metropolitan Vancouver area, including Vancouver city proper and surrounding municipalities such as Richmond, Burnaby, New Westminster, and the North Shore communities.

The 604 area code is considered a geographic area code, meaning it corresponds to a specific geographic region rather than being assigned to mobile services exclusively. However, both landline and mobile phone numbers can have the 604 area code. Due to population growth and increased demand for phone numbers, two overlay codes—778 and 236—were introduced to serve the same geographic area, allowing for more available phone numbers without requiring existing customers to change their numbers.

604 Area Code Location & Coverage

Cities and Regions Covered

The 604 area code covers a substantial portion of the Lower Mainland region of British Columbia. Major cities and municipalities within the 604 area code include:

Vancouver – British Columbia’s largest city and the primary city served by the 604 area code. Vancouver is a major metropolitan center known for its diverse population, thriving economy, and scenic coastal location.

Richmond – Located south of Vancouver, Richmond is home to Vancouver International Airport and has a significant population with diverse cultural communities.

Burnaby – Situated directly east of Vancouver, Burnaby is the third-largest city in British Columbia and serves as an important commercial and residential hub.

New Westminster – One of the oldest cities in Western Canada, New Westminster sits on the Fraser River and maintains historical significance in the region.

North Vancouver – Comprising both a city and a district municipality, North Vancouver sits across the Burrard Inlet from Vancouver and includes both urban areas and mountainous terrain.

West Vancouver – An affluent municipality on the north shore of the Burrard Inlet, West Vancouver is known for its scenic views and high property values.

Delta – Located south of Richmond, Delta includes multiple distinct communities and borders the United States.

Surrey (partial) – While Surrey now primarily uses the 778 and 236 area codes, some older numbers in northern Surrey may still carry the 604 area code.

Geographic Coverage Area

The 604 area code covers approximately 2,700 square kilometers (1,042 square miles) of the Lower Mainland region. This area stretches from the U.S.-Canada border in the south to the mountains in the north, and from the Strait of Georgia in the west to areas approaching the Fraser Valley in the east. The coverage area is characterized by diverse geography, including coastal regions, urban centers, suburban communities, and mountainous terrain. The region is bounded by natural features including the Pacific Ocean, the Fraser River, and the Coast Mountains.

Time Zone Information

The 604 area code operates in the Pacific Time Zone, which is the same time zone used along the west coast of North America. During standard time (typically November through March), the region observes Pacific Standard Time (PST), which is UTC-8. During daylight saving time (typically March through November), the region observes Pacific Daylight Time (PDT), which is UTC-7. British Columbia follows the same daylight saving time schedule as most of the United States, with clocks moving forward one hour in March and back one hour in November. For current local time information and timezone tools, visit CheckDateTime.com.

604 Area Code Details

History of 604 Area Code

When Was 604 Created?

The 604 area code was established in October 1947 as part of the original North American Numbering Plan implementation. When first introduced, 604 served the entire province of British Columbia, making it one of the largest geographic area codes in North America by land area. At the time of its creation, British Columbia’s population was significantly smaller, and a single area code was sufficient to serve all telephone subscribers throughout the province. The 604 area code remained the sole area code for British Columbia for nearly four decades, a testament to the relatively slow population growth and limited telephone service expansion during the mid-20th century.

Area Code Changes and Overlays

The first major change to the 604 area code came in 1996 when the province’s growing population necessitated a split. The 250 area code was introduced to serve all of British Columbia outside the Lower Mainland, effectively dividing the province between 604 (Lower Mainland) and 250 (rest of BC). This split reflected the concentration of population growth in the Vancouver metropolitan area.

As the Lower Mainland continued to experience rapid population growth and increased demand for telephone numbers due to the proliferation of mobile phones, fax machines, and internet connections, additional area codes became necessary. In 2001, the 778 area code was introduced as an overlay to 604, meaning both area codes serve the same geographic region. This overlay approach allowed telecommunications providers to assign new phone numbers without requiring existing customers to change their numbers.

By 2013, even the combination of 604 and 778 was approaching capacity. The 236 area code was introduced as a second overlay, providing yet another pool of available phone numbers for the same geographic area. Today, all three area codes (604, 778, and 236) serve the same Lower Mainland region, with new numbers being assigned from any of the three codes depending on availability.

How to Call 604 Area Code

Dialing Within the Area Code

When making local calls within the 604 area code region, you must use 10-digit dialing. This means you need to dial the full 10-digit phone number, including the area code, even when calling someone in the same area code. The format is: 604-XXX-XXXX. Ten-digit dialing became mandatory in the Lower Mainland after the introduction of overlay area codes, as the telecommunications system needs the area code to properly route calls when multiple area codes serve the same geographic area. You do not need to dial “1” before the area code for local calls within the region.

Dialing From Other Area Codes in Canada

When calling a 604 area code number from elsewhere in Canada (outside the local calling area), you must dial 1-604-XXX-XXXX. The “1” is the Canadian long-distance prefix, followed by the three-digit area code and the seven-digit local number. Long-distance charges may apply depending on your phone plan, though many modern mobile and home phone plans include unlimited Canada-wide calling.

International Dialing to 604

When calling a 604 area code number from outside Canada, you must use the international dialing format: +1-604-XXX-XXXX. The “+1” represents the country code for Canada and the United States (both countries share the same country code as they are part of the North American Numbering Plan). The exact dialing sequence depends on your country. In many countries, you dial “00” followed by “1” instead of the “+” symbol, making it 00-1-604-XXX-XXXX. Check with your local telecommunications provider for specific international dialing instructions and rates. You can use timer tools to track call durations for billing purposes.

Nearby Area Codes

Population & Demographics

The 604 area code serves a population of approximately 2.5 to 3 million people, making it one of Canada’s most densely populated area codes. The Vancouver metropolitan area, also known as Metro Vancouver or the Greater Vancouver Regional District, is the third-largest metropolitan area in Canada, after Toronto and Montreal. The region has experienced consistent population growth over the past several decades, driven by immigration, domestic migration, and natural population increase.

The demographic composition of the 604 area code region is notably diverse. Vancouver and the surrounding communities are home to significant populations of Chinese, South Asian, Filipino, and other ethnic communities. The region is known for being one of the most multicultural areas in Canada, with over 40% of residents identifying as visible minorities. English is the predominant language, but Chinese languages (Mandarin and Cantonese), Punjabi, Tagalog, and many other languages are widely spoken.

Economically, the 604 area code region is a major center for international trade, film and television production, technology, tourism, and natural resource industries. Vancouver serves as Canada’s primary Pacific gateway, with the Port of Vancouver being the largest port in Canada by tonnage. The region is home to numerous international companies, a thriving startup ecosystem, and world-class educational institutions including the University of British Columbia and Simon Fraser University. For more information about time-related topics and guides, visit the CheckDateTime guides section.

Frequently Asked Questions

Is 604 a Canadian area code?

Yes, the 604 area code is a Canadian area code that serves the Lower Mainland region of British Columbia, including Vancouver and surrounding communities. It is part of the North American Numbering Plan (NANP), which is why Canadian and U.S. phone numbers share similar formats and both use the country code +1.

What cities are in the 604 area code?

The 604 area code serves Vancouver, Richmond, Burnaby, New Westminster, North Vancouver, West Vancouver, Delta, and portions of other Lower Mainland communities. It covers the most densely populated region of British Columbia.

Do I need to dial 10 digits for local calls in the 604 area code?

Yes, 10-digit dialing is mandatory for all calls within the 604 area code region. You must dial the area code (604, 778, or 236) followed by the seven-digit phone number, even for local calls. You do not need to dial “1” before the area code for local calls.

What are the overlay area codes for 604?

The 604 area code has two overlay codes: 778 (introduced in 2001) and 236 (introduced in 2013). All three area codes serve the same geographic region in the Lower Mainland of British Columbia.

When was the 604 area code established?

The 604 area code was established in October 1947 as one of the original 86 area codes in the North American Numbering Plan. It initially served the entire province of British Columbia before being split in 1996 when the 250 area code was introduced for areas outside the Lower Mainland.

What time zone is the 604 area code in?

The 604 area code operates in the Pacific Time Zone (PT), observing Pacific Standard Time (PST, UTC-8) during winter months and Pacific Daylight Time (PDT, UTC-7) during summer months. British Columbia observes daylight saving time, with clocks moving forward in March and back in November.

Can I get a new 604 phone number?

While 604 numbers are still in use, they are increasingly scarce due to high demand. New phone numbers in the Lower Mainland are more commonly assigned from the 778 or 236 area codes. However, availability varies by telecommunications provider, and some 604 numbers may occasionally become available when they are released back into the pool of available numbers.

Are 604 numbers more valuable than 778 or 236 numbers?

Some people perceive 604 numbers as more desirable because 604 is the original and longest-established area code for Vancouver. Businesses sometimes prefer 604 numbers for branding and local recognition. However, all three area codes (604, 778, and 236) are functionally identical and serve the same region with equal legitimacy.

Conclusion

The 604 area code remains an iconic identifier for Vancouver and the Lower Mainland region of British Columbia. From its establishment in 1947 as British Columbia’s sole area code to its current status as one of three overlapping codes serving Canada’s third-largest metropolitan area, 604 has evolved alongside the region’s tremendous growth. Understanding the 604 area code, its coverage area, time zone, and proper dialing procedures is essential for residents, businesses, and anyone communicating with the Vancouver region. Whether you’re a longtime Vancouver resident with a coveted 604 number or a newcomer with a 778 or 236 number, all three area codes represent the vibrant, diverse, and economically dynamic Lower Mainland community. As the region continues to grow, these area codes will remain vital infrastructure supporting communication for millions of Canadians in one of the country’s most important regions.