Section 23138 Of Article 2. Boundaries Of The Several Counties From California Government Code >> Division 1. >> Title 3. >> Chapter 2. >> Article 2.
23138
. The boundaries of San Francisco city and county are as
follows:
Beginning at the southwest corner, being the northwest corner of
San Mateo, in the Pacific Ocean, on the extension of northern line of
T. 3 S., of Mount Diablo base; thence northerly along the Pacific
Coast, to its point of intersection with the westerly extension of
the low-water line on the northern side of the entrance to San
Francisco Bay, being the southwest corner of Marin and northwest
corner of San Francisco; thence easterly, through Point Bonita and
Point Cavallo, to the most southeastern point of Angel Island, all on
the line of Marin; thence northerly, along the easterly line of
Marin, to the northwest point of Golden Rock (also known as Red
Rock), being a common corner of Marin, Contra Costa, and San
Francisco; thence due southeast four and one-half statute miles to a
point established as the corner common to Contra Costa, Alameda, and
San Francisco; thence southeasterly, on the western line of Alameda
County to a point on the north line of T. 3 S., R. 4 W., M D. B. &
M.; thence westerly on the township lines and an extension thereof to
the place of beginning. The islands known as the Farralones
(Farallons) are a part of said city and county.