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  2. 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

  3. 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]

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

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

    537 reserved as a fifth area code for the region. 906: Michigan (Upper Peninsula: Sault Ste. Marie, Escanaba, Houghton, Iron Mountain, Marquette, Menominee, etc.) March 19, 1961: split of 616; 907: Alaska (all, except the lone border town of Hyder which uses the BC, Canada area codes of 236, 250, 672, or 778 depending on its assigned number ...

  5. Area code 302 - Wikipedia

    en.wikipedia.org/wiki/Area_code_302

    Area code 302 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Delaware. It is Delaware's only area code, and was assigned in 1947 as one of the original North American area codes .

  6. 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.

  7. Westwood Highlands, San Francisco - Wikipedia

    en.wikipedia.org/wiki/Westwood_Highlands,_San...

    Mt. Davidson, the highest point in San Francisco, lays just northeast. Westwood Highlands covers an area of 0.178 square miles, with a population of 1,782 as of 2009. [3] The median household income in Westwood Highlands is $116,573, compared to a median of $70,770 for the city of San Francisco. [3]

  8. Market Street (San Francisco) - Wikipedia

    en.wikipedia.org/wiki/Market_Street_(San_Francisco)

    City and County of San Francisco: Maintained by: San Francisco DPW: Length: 3 mi (4.8 km) Location: San Francisco, California: Nearest metro station: Embarcadero Station Montgomery Street Station Powell Street Station Civic Center/UN Plaza station: North East end: The Embarcadero: South West end: Portola Drive: Construction; Commissioned: 1847 ...

  9. Diamond Heights, San Francisco - Wikipedia

    en.wikipedia.org/wiki/Diamond_Heights,_San_Francisco

    1895-built house on Gold Mine Drive. Diamond Heights was a San Francisco Redevelopment Agency project active from 1948 until 1978. [6] It was also the first project of the San Francisco Planning and Urban Research Association, intended to use its redevelopment powers for land on the hills in the center of the city to be developed with, rather than against, the topography.