 | County DETAILS |
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> United States > California > CA Counties > San Francisco
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| Website | https://sf.gov/ |
| Established | February 18, 1850 |
| Disbanded | Still Active |
| Last Modified | BrentinCO June 17, 2023 11:26am |
| Description | The City and County of San Francisco is a consolidated city-county, a status it has had since 1856. It is the only such consolidation in California. The mayor is also the county executive and the county board of supervisors acts as the city council. Because of its unique status, it exercises jurisdiction over property that would otherwise be located outside of its corporation limit. San Francisco International Airport, though located in San Mateo County, is owned and operated by the City and County of San Francisco. San Francisco was also granted a perpetual leasehold over the Hetch Hetchy Valley and watershed in Yosemite National Park by the Raker Act in 1913. |
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April 25, 1860 -
Between 1949 and 1959 (precise date unknown) SAN FRANCISCO gained a small area of the Alameda Naval Air Station when landfill expansion extended westward over the county line between SAN FRANCISCO and ALAMEDA in San Francisco Bay.
U.S.G.S., 7.5 Minute Series, Oakland West Quadrangle, "Edition of 1949" and "Edition of 1959"
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April 18, 1857 -
April 25, 1860
SAN FRANCISCO gained Angel Island in San Francisco Bay from MARIN
Calif. Stats. 1857, 8th sess., chs. 190, 192/pp. 209-210, 222-223
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July 01, 1856 -
April 18, 1857
SAN FRANCISCO lost to creation of SAN MATEO. Act passed 19 April 1856; took effect 1 July 1856.
Calif. Stats. 1856, 7th sess., ch. 125/pp. 145-146, 176-178
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May 15, 1854 -
July 01, 1856
SAN FRANCISCO lost "Island of Los Angeles" (Angel Island) in San Francisco Bay to MARIN
Calif. Stats. 1854, 5th sess., ch. 67/p. 121
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February 18, 1850 -
May 15, 1854
SAN FRANCISCO created from non-county area; southern boundary with BRANCIFORTE (now SANTA CRUZ) was in dispute when the counties disagreed over the interpretation of the boundary description.
Calif. Stats. 1849, 1st sess., ch. 15, sec. 8/pp. 59-60; Stanger, 88
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