408 Area Code 🌍☎️

The most populous cities in area code 408 are: San Jose, Sunnyvale, Campbell, Los Gatos, and San Martin.

Other cities in the 408 area code include: Morgan Hill, Gilroy, Salinas, Milpitas, Saratoga, Fremont, Santa Clara, Mount Hamilton, Watsonville, and Hollister.

San Jose, officially the City of San José, is the economic, cultural, and political center of Silicon Valley and the largest city in Northern California. With an estimated 2015 population of 1,026,908, it is the third most populous city in California (after Los Angeles and San Diego) and the tenth most populous in United States. Located in the center of the Santa Clara Valley, on the southern shore of San Francisco Bay, San Jose covers an area of 179.97 square miles (466.109/km²). San Jose is the county seat of Santa Clara County, the most affluent county in California. San Jose is the largest city in both the San Francisco Bay Area and the San Jose-San Francisco-Oakland Combined Statistical Area, which contain 7.7 million and 8.7 million people respectively. Before the arrival of the Spanish, the area around San Jose was inhabited by the Ohlone people. San Jose was founded on November 29, 1777, as the Pueblo of San José de Guadalupe, the first civilian town founded in Spanish Alta California. When California gained statehood in 1850, San Jose became the state's first capital. Following World War II, San Jose experienced an economic boom, with a rapid population growth and aggressive annexation of nearby cities and communities carried out in the 1950s and 60s. The rapid growth of the high-technology and electronics industries further accelerated the transition from an agricultural center to an urbanized metropolitan area. Results of the 1990 U.S. Census indicated that San Jose had officially surpassed San Francisco as the most populous city in Northern California. By the 1990s, San Jose and the rest of Silicon Valley had become the global center for the high tech and internet industries.San Jose is considered to be a global city, notable for its affluence and high cost of living. San Jose's location within the booming high tech industry, as a cultural, political, and economic center has earned the city the nickname "Capital of Silicon Valley ". San Jose is one of the wealthiest major cities in the United States and the world, and has the third highest GDP per capita in the world (after Zurich, Switzerland and Oslo, Norway), according to the Brookings Institute. With a median home price of $1,085,000, San Jose has the most expensive housing market in the country and the fifth most expensive housing market in the world, according to the 2017 Demographia International Housing Affordability Survey. Major global tech companies including Cisco Systems, eBay, Adobe Systems, PayPal, Brocade, Samsung, Acer, and Western Digital maintain their headquarters in San Jose, in the center of Silicon Valley.

Sunnyvale is a city located in Santa Clara County, California. As of the 2010 United States Census, the population was 140,095.Sunnyvale is the seventh most populous city in the San Francisco Bay Area and one of the major cities comprising Silicon Valley. It is bordered by portions of San Jose to the north, Moffett Federal Airfield to the northwest, Mountain View to the west, Los Altos to the southwest, Cupertino to the south, and Santa Clara to the east. It lies along the historic El Camino Real and Highway 101.As part of California's high-tech area known as Silicon Valley, Sunnyvale is the headquarters location of companies including Juniper Networks, Fortinet, Advanced Micro Devices, NetApp, Spansion, Yahoo!, AppliedMicro, and Ariba. It is also home to several aerospace/defense companies: Lockheed Martin has a major facility in Sunnyvale, and Honeywell, Northrop Grumman Electronic Systems - Marine Systems (formerly Joshua Hendy Iron Works), Finisar, and Spirent also have offices there. Sunnyvale was also the home to Onizuka Air Force Station, often referred to as "the Blue Cube" due to the color and shape of its windowless main building. The facility, previously known as Sunnyvale Air Force Station, was named for the deceased Space Shuttle Challenger astronaut Ellison Onizuka. It served as an artificial satellite control facility of the United States armed forces until August 2010 and has since been decommissioned and demolished.Sunnyvale is one of the few U.S. cities to have a single unified Department of Public Safety, where all personnel are trained as firefighters, police officers, and EMTs, so they can respond to an emergency in any of the three roles.Library services for the city are provided by the Sunnyvale Public Library, located at the Sunnyvale Civic Center.

Campbell / ˈ k æ m b əl / is a city in Santa Clara County, California, and part of Silicon Valley, in the San Francisco Bay Area. As of the 2010 U.S. Census, Campbell's population is 39,349. Although not a major high-tech city like many of its neighbors, Campbell is the original home of eBay and of its creator, Pierre Omidyar. Campbell is home to the Pruneyard Shopping Center, a sprawling open-air retail complex which was involved in a famous U.S. Supreme Court case that established the extent of the right to free speech in California. Today the Pruneyard Shopping Center is home to the South Bay offices of the Federal Bureau of Investigation.

The 408 area code lies within the Pacific Daylight Time Zone (or PDT). The current time in Pacific Daylight Time is 09:15 PM on Mar 06, 2026.