There are 11 US Post Offices in Tehama County serving a total of 69,878 residents equating to 6,353 residents per post office. It's estimated that approximately 111,533 packages are handled across the 11 county post offices annually. Tehama County (/t\u0259\u02c8he\u026am\u0259/ t\u0259-HAY-m\u0259) is a county located in the northern part of the U.S. state of California. As of the 2010 census, the population was 63,463. The county seat and largest city is Red Bluff. Tehama County comprises the Red Bluff, CA Micropolitan Statistical Area, which is also included in the Redding-Red Bluff, CA Combined Statistical Area. The county is bisected by the Sacramento River."