Cal. Sts. & Hy. Code § 2107.1
Any city or city and county may apply to the United States Bureau of Census to determine its population. Upon receipt from the bureau of its determination of population, the city or city and county may, at its option, file a certified copy of the determination with the Controller.
All apportionments made under Section 2107 and all payments under Section 11005 of the Revenue and Taxation Code for any apportionment made beginning with the month following the filing of the determination shall be based upon the population so determined until such time as a subsequent determination is made by the bureau and a certified copy is filed by the city or city and county with the Controller or a certified copy of a subsequent estimate or census result validated by the Department of Finance is filed with the Controller as provided in Section 2107.2. For the purposes of this section, a written or telegraphic certification from the Director of the Census to the Controller of the determination of population may be accepted by the Controller in lieu of the filing by the city or city and county of the certified copy of the determination.
The cost of any determination by the United States Bureau of Census or by the Department of Finance is a proper charge against the city or city and county applying therefor and shall be paid by it to the bureau or to the department.
This section does not apply to counties.
Ca. Sts. and High. Code § 2107.1