June 19, 2019 – County of San Diego

The motto of the County of San Diego is “The Noblest Motive is the Public Good”, which I really love.

The flag features the county seal on a field of white, bordered at the top by a band of red, and at the bottom by a band of green, significant of the territory of San Diego County having been under the control of King Charles of Spain, the Republic of Mexico, the Republic of California, and the United States of America.