Government Code section 23170

Every common boundary between counties which has been mutually recognized and used by the counties adjacent thereto for the purpose of the assessment and collection of taxes for a period of 25 years continuously prior to July 30, 1927, is confirmed, validated, and declared to be legally established.

Source: Section 23170, https://leginfo.­legislature.­ca.­gov/faces/codes_displaySection.­xhtml?lawCode=GOV§ionNum=23170.­ (updated Jan. 1, 1947; accessed Jun. 30, 2025).

Green check means up to date. Up to date

Verified:
Jun. 30, 2025

§ 23170's source at ca​.gov