650 Area Code 🌍☎️

The most populous cities in area code 650 are: Palo Alto, San Mateo, Mountain View, Redwood City, and San Bruno.

Other cities in the 650 area code include: San Carlos, San Francisco, Half Moon Bay, Los Altos, Millbrae, Daly City, Pacifica, Pescadero, La Honda, South San Francisco, Brisbane, San Jose, Moss Beach, Stanford, Fremont, and Sunnyvale.

Palo Alto is a charter city located in the northwest corner of Santa Clara County, California, in the San Francisco Bay Area of the United States. The city shares its borders with East Palo Alto, Mountain View, Los Altos, Los Altos Hills, Stanford, Portola Valley, and Menlo Park. It is named after a coast redwood tree called El Palo Alto.Palo Alto was established by Leland Stanford Sr. when he founded Stanford University, following the death of his son, Leland Stanford Jr. The city includes portions of Stanford and is headquarters to a number of high-technology companies, including Hewlett-Packard (HP), Space Systems/Loral, VMware, Tesla Motors, Ford Research and Innovation Center, PARC, Ning, IDEO, Skype, and Palantir Technologies. It has also served as an incubator to several other high-technology companies such as Google, Facebook, Logitech, Intuit, Pinterest, and PayPal.As of the 2010 census, the city's total resident population is 64,403. Palo Alto is one of the most expensive cities in the United States and its residents are amongst the highest educated in the country.

San Mateo is a city in San Mateo County, California, in the high-tech enclave of Silicon Valley in the San Francisco Bay Area. With a population of 97,207 as of the 2010 census, it is one of the larger suburbs on the San Francisco Peninsula, located between Burlingame to the north, Foster City and San Francisco Bay to the east, Belmont to the south, and Highlands-Baywood Park and Hillsborough to the west. The 2015 population was estimated to be 103,536. San Mateo was incorporated in 1894.

Mountain View is a city located in Santa Clara County, California, United States, named for its views of the Santa Cruz Mountains. From its origins as a stagecoach stop, it grew to a large suburb with a pedestrian-friendly downtown, free wi-fi, and a population of 74,066. The city borders Palo Alto and the San Francisco Bay to the north, Los Altos to the south, and Moffett Federal Airfield and Sunnyvale to the east.Situated in the southern end of the San Francisco Peninsula in the San Francisco Bay Area, Mountain View is home to many high technology companies. In 1956, Shockley Semiconductor Laboratory, the first company to develop silicon semiconductor devices in what came to be known as Silicon Valley, was established in the city by William Shockley. Today, many of the largest technology companies in the world are headquartered in the city, including Google, Mozilla Foundation, Symantec, and Intuit. The original Byte Shop computer store was opened at 1063 El Camino Real, Mountain View by Paul Terrell, and the first 50 Apple I computers were sold from that location. The Santa Clara Valley Transportation Authority integrates the city with the neighboring cities of Palo Alto, Los Altos, and Sunnyvale.

The 650 area code lies within the Pacific Daylight Time Zone (or PDT). The current time in Pacific Daylight Time is 04:22 AM on Mar 10, 2026.