Western Addition, San Francisco
A southern view from Alta Plaza Park, which is in the Pacific Heights neighborhood. Most of the valley in the central part of this image is in the Western Addition neighborhood.
|• Supervisor||Dean Preston|
|• State Assembly||David Chiu ( D) and Phil Ting ( D) |
|• State Senator||Scott Wiener ( D) |
|• U. S. Rep.||Nancy Pelosi ( D) |
|• Total||0.463 sq mi (1.20 km2)|
|• Land||0.463 sq mi (1.20 km2)|
|• Density||27,919/sq mi (10,780/km2)|
94102, 94109, 94115, 94117
Today, the term Western Addition is generally used in two ways: to denote either the development's original geographic area or the eastern portion of the neighborhood (also called the Fillmore District) that was redeveloped in the 1950s.
Those who use the term in the former sense generally consider its boundaries to be Van Ness Avenue on the east, Masonic on the west, California Street on the north, and Fell or Oak Street on the south. From there, it is usually divided into smaller neighborhoods such as Lower Pacific Heights, Cathedral Hill, Japantown, the Fillmore, Hayes Valley, Alamo Square, Anza Vista, and North Panhandle.
The San Francisco Association of Realtors defines the term more closely to the latter sense, treating it as "District 6D" (not to be confused with Board of Supervisors districts; much of the Western Addition is in supervisors District 5), bounded by Geary Boulevard in the north, McAllister and Fulton streets, and Golden Gate Avenue on the south, Van Ness Avenue in the east, and Divisadero Street on the west. By this definition, the Western Addition is roughly synonymous with the Fillmore and Cathedral Hill neighborhoods. 
Historically, the Western Addition was first platted during the 1850s as a result of the Van Ness Ordinance. This large tract encompassed some 500 blocks running west from Larkin Street (the city's previous western boundary) to Divisadero Street, (hence the name "Western Addition") creating Jefferson Square, Hamilton Square, Alamo Square, Alta Plaza, and Lafayette Square. The area was initially used for small-scale farming; but, following the invention of the cable car during the 1870s, the Western Addition developed as a Victorian streetcar suburb. It survived the 1906 San Francisco earthquake with its Victorian-style buildings largely intact.
After the Second World War, the Western Addition — particularly the Fillmore District — became a population base and a cultural center for San Francisco's African-American community, a consequence of opportune housing supply due to the internment of Japanese Americans.  Since then, urban renewal schemes  and San Francisco's changing demographics have led to major changes in the economic and ethnic makeup of the neighborhood, as the Fillmore District suffered from crime    and poverty while many other districts underwent significant gentrification. The Central Freeway used to run through the neighborhood to Turk Street, but that section of the freeway was closed immediately after the 1989 Loma Prieta earthquake and later demolished.
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- San_Francisco/Western Addition travel guide from Wikivoyage