{"data":{"id":"us-ca/gov-23138","jurisdiction":"us-ca","citation":"GOV § 23138","heading":"","body":"The boundaries of San Francisco city and county are as follows:\nBeginning 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. \u0026 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.","path":["Government Code - GOV","TITLE 3. GOVERNMENT OF COUNTIES [23000. - 33205.]","DIVISION 1. COUNTIES GENERALLY [23000. - 23732.]","CHAPTER 2. Boundaries [23070. - 23296.]","ARTICLE 2. Boundaries of the Several Counties [23100. - 23158.]"],"source_url":"https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zip","current_through":"2026-09-13","vintage":"","retrieved_at":"2026-09-14T05:56:33Z","sha256":"ba4383ca202a3071a0c401050cf15620fc311e8210f8b5ce7f1bc6b6d8b82855","source_id":"us-ca","stale":false,"prev":"us-ca/gov-23137","next":"us-ca/gov-23139"},"notice":"GroundRules: Original legal text. Not legal advice."}