The bay district board shall be a board of directors consisting of members appointed pursuant to Section 40221.5 from each county included, in whole or in part, within the district on the basis of the population of that portion of the county, as determined by the latest estimate prepared by the Population Research Unit of the Department of Finance pursuant to Section 2227 of the Revenue and Taxation Code, included within the district.
Source:
Section 40220.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=40220.5..