Area codes help identify specific geographic regions for telephone services. If you’re wondering where is area code 628, it serves San Francisco and nearby areas. This blog aims to explore the location and significance of area code 628, as well as provide information on where is area code 619 located and where is area code 602.
Where is Area Code 628 Located?

Introduction to Area Code 628
What is an area code?
An area code is a three-digit number that identifies a specific geographic region for telephone services. The North American Numbering Plan (NANP) introduced area codes to streamline the process of making phone calls. Each area code helps route calls to the correct location.
When was Area Code 628 established?
Area code 628 was established in 2015. The California Public Utilities Commission approved area code 628 as an overlay for area code 415. This decision aimed to address the growing demand for new phone numbers in the San Francisco Bay Area.
Geographical Coverage
Primary regions covered
Area code 628 serves most of San Francisco and its surrounding areas. The primary regions include the city of San Francisco and parts of Marin County. The overlay with area code 415 ensures comprehensive coverage for the region.
Major cities within Area Code 628
Several major cities fall under area code 628. These cities include:
San Francisco
Brisbane
Daly City
Belvedere
Corte Madera
Larkspur
Mill Valley
Fairfax
Novato
Ross
San Anselmo
San Rafael
Sausalito
Tiburon
Historical Context
History of area codes in the region
The history of area codes in the San Francisco Bay Area began with area code 415. Established in 1947, area code 415 initially covered a larger region. Over time, population growth and increased demand for phone numbers led to the creation of additional area codes.
Changes and developments over time
The introduction of area code 628 marked a significant development. The overlay allowed existing phone numbers to remain unchanged while providing new numbers for residents and businesses. This change ensured that the region could continue to grow without running out of available phone numbers.
Significance of Area Code 628

Economic Impact
Key industries in the region
Area code 628 encompasses a region known for diverse industries. Technology companies dominate the area, with many headquartered in San Francisco. Financial services also play a significant role, with numerous banks and investment firms operating within the area. Tourism contributes significantly to the local economy, attracting millions of visitors each year.
Business growth and development
Business growth in area code 628 has been substantial. The technology sector has seen rapid expansion, leading to increased job opportunities. Startups thrive in this environment, benefiting from access to venture capital. Established businesses continue to grow, contributing to the overall economic health of the region.
Cultural and Social Aspects
Demographics of the area
The demographics of area code 628 reflect a diverse population. Residents include a mix of ethnicities and cultures. The area attracts young professionals, families, and retirees. The population density is high, particularly in San Francisco.
Cultural landmarks and events
Cultural landmarks abound in area code 628. The Golden Gate Bridge stands as an iconic symbol. Alcatraz Island offers historical significance and attracts tourists. Annual events such as the San Francisco International Film Festival draw large crowds. The region hosts numerous cultural festivals celebrating various traditions.
Practical Information
How to Dial Area Code 628
Local dialing procedures
To dial a local number within area code 628, include the area code before the seven-digit phone number. For example, to call a number in San Francisco, dial 628 followed by the local number. This procedure ensures that the call routes correctly within the region.
International dialing procedures
To dial a number from outside the United States to area code 628, start with the international access code for the country. Next, dial the country code for the United States, which is 1. Then, enter the area code 628 followed by the seven-digit local number. For example, to call a number in San Francisco from Europe, dial the international access code, then 1-628, and finally the local number.
Area Code 628 in the Digital Age
Impact of technology on area codes
Technology has significantly impacted area codes like 628. The rise of mobile phones and internet-based communication has increased the demand for new numbers. Area code 628 helps meet this demand by providing additional numbers for residents and businesses. The overlay with area code 415 ensures that the region can continue to grow without running out of available numbers.
Future outlook for Area Code 628
The future outlook for area code 628 appears positive. The region continues to experience growth in population and business activities. The availability of new numbers under area code 628 supports this growth. Advances in technology will likely continue to influence the use and management of area codes. Area code 628 will remain an essential part of the communication infrastructure in the San Francisco Bay Area.
Area code 628 serves San Francisco and nearby areas. Understanding area codes helps navigate communication systems. Area code 628 supports the region’s growth and connectivity. The significance of area code 628 extends to economic, cultural, and social aspects. Readers should explore how area code 628 impacts their lives. Share experiences or ask questions about area code 628 in the comments.