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  2. Area codes 415 and 628 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_415_and_628

    Area code 415 has been split three times due to the Bay Area's rapid economic growth and demand for telecommunication services: On March 1, 1959, area code 707 was created from the northern part, and area code 408 was created for San Jose, the South Bay, the Monterey Bay, and the Salinas Valley.

  3. List of California area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_California_area_codes

    San Francisco, San Rafael, Novato; all of San Francisco County, most of Marin County and a small portion of northern San Mateo County: October 1947; split numerous times since then; overlaid by 628 effective March 21, 2015 [2] 424: overlay with 310: started service on August 26, 2006. 442: overlay with 760: started service on October 24, 2009. 510

  4. List of neighborhoods in San Francisco - Wikipedia

    en.wikipedia.org/wiki/List_of_neighborhoods_in...

    The housing stock was overwhelming single family (95% vs. 68% citywide) and owner- occupied (72% vs. 31% citywide), while the population was mostly African American (63% compared with 13% citywide). In recent years, the OMI has witnessed an influx of Asian-American and other ethnic groups, making it one of San Francisco's most diverse ...

  5. Telephone exchange names - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange_names

    Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]

  6. List of North American Numbering Plan area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American...

    area code 387 is reserved as a fifth code for the region; 648: not in use; available for geographic assignment 649: The Turks and Caicos Islands (all) June 1, 1997: split of 809; 650: California (Daly City, South San Francisco, Palo Alto, Redwood City, Menlo Park, Mountain View, San Mateo, Santa Clara) August 2, 1997: split of 415; 651

  7. List of cities and towns in the San Francisco Bay Area

    en.wikipedia.org/wiki/List_of_cities_and_towns...

    San Francisco Bay Area. The San Francisco Bay Area, commonly known as the Bay Area, is a metropolitan region surrounding the San Francisco Bay estuaries in Northern California. According to the 2010 United States Census, the region has over 7.1 million inhabitants and approximately 6,900 square miles (18,000 km 2) of land. [1]

  8. List of companies based in the San Francisco Bay Area

    en.wikipedia.org/wiki/List_of_companies_based_in...

    As of 2020, 38 Fortune 500 companies had headquarters in the San Francisco Bay Area. [1] San Francisco-based businesses are not listed here; the subset of San Francisco-based businesses by type is at the list of companies based in San Francisco. This list includes extant businesses formerly located in the Bay Area, which have moved, or been ...

  9. Chinatown, San Francisco - Wikipedia

    en.wikipedia.org/wiki/Chinatown,_San_Francisco

    Washington Street in Chinatown with Transamerica Pyramid in the background.. Officially, Chinatown is located in downtown San Francisco, covers 24 square blocks, [10] and overlaps five postal ZIP codes (94108, 94133, 94111, 94102, and 94109).