There are 48 stations in San Francisco they are divided into 3 divisions and 10 battalions:
Fun fact... this year the SFFD brought back the 1940s tradition of decorating the station houses for the holidays to bring some holiday cheer in a year decimated by COVID-19.
Students from MHS Fire/EMS program were asked to act as judges.
Read more about it in this article from the SF Chronicle.
Here are some pictures from Dec 2020: