There are 11 US Post Offices in Madera County serving a total of 150,927 residents equating to 13,721 residents per post office. It's estimated that approximately 240,896 packages are handled across the 11 county post offices annually. Madera County, officially the County of Madera, is a county at the geographic center of the U.S. state of California. As of the 2010 census, the population was 150,865. The county seat is Madera. Madera County comprises the Madera, CA Metropolitan Statistical Area, which is included in the Fresno-Madera, CA Combined Statistical Area. It is located in the eastern San Joaquin Valley and the central Sierra Nevada. The southeasternmost part of Yosemite National Park is located in the county's northeast."