There are 21 US Post Offices in Mendocino County serving a total of 84,437 residents equating to 4,021 residents per post office. It's estimated that approximately 134,771 packages are handled across the 21 county post offices annually. Mendocino County is a county located on the north coast of the U.S. state of California. As of the 2010 census, the population was 87,841. The county seat is Ukiah. Mendocino County comprises the Ukiah, CA Micropolitan Statistical Area. It is located north of the San Francisco Bay Area and west of the Central Valley. The county is noted for its distinctive Pacific Ocean coastline, Redwood forests, wine production, microbrews, and liberal views about the use of cannabis and support for its legalization. It is estimated that roughly one-third of the economy is based on the cultivation of marijuana. The notable historic and recreational attraction of the \"Skunk Train\" connects Fort Bragg with Willits in Mendocino County via a steam-locomotive engine, along with other vehicles."