There are 22 US Post Offices in Ventura County serving a total of 882,280 residents equating to 40,104 residents per post office. It's estimated that approximately 1,408,217 packages are handled across the 22 county post offices annually. Ventura County is a county in the southern part of the U.S. state of California. As of the 2010 census, the population was 823,318. The county seat is Ventura. Ventura County comprises the Oxnard-Thousand Oaks-Ventura, CA Metropolitan Statistical Area, which is also included in the Los Angeles-Long Beach, CA Combined Statistical Area. It is also considered the southernmost county along the California Central Coast."