Napa County is inviting residents to participate in workshops on drawing new county supervisor districts for the next decade using updated data from the 2020 U.S. Census.
A Draft Map is being shown on the redistricting calendar for Nov 16: Draft Map (districtr format) Draft Map (pdf format)
(The Draft Map is good in that it allocates more vineyard land to District 2, and the disection of Napa City seems more straightforward than before.)