There are 48 US Post Offices in Alameda County serving a total of 1,665,422 residents equating to 34,696 residents per post office. It's estimated that approximately 2,658,199 packages are handled across the 48 county post offices annually. Alameda County (/\u00e6l\u1d7b\u02c8mi\u02d0d\u0259/, al-uh-ME-duh) is a county in the state of California in the United States. As of the 2010 census, the population was 1,510,271, making it the 7th-most populous county in the state. Its county seat is Oakland. Alameda County is included in the San Francisco Bay Area, occupying much of the East Bay region."