There are 44 US Post Offices in Fresno County serving a total of 619,672 residents equating to 14,083 residents per post office. It's estimated that approximately 989,066 packages are handled across the 44 county post offices annually. Fresno County, officially the County of Fresno, is a county located in the U.S. state of California. As of the 2010 census, the population was 930,450. The county seat is Fresno, the fifth-largest city in California. Fresno County comprises the Fresno, CA Metropolitan Statistical Area, which is included in the Fresno-Madera, CA Combined Statistical Area. It is located in the Central Valley, south of Stockton and north of Bakersfield."