There are 36 US Post Offices in Orange County serving a total of 937,359 residents equating to 26,038 residents per post office. It's estimated that approximately 1,496,130 packages are handled across the 36 county post offices annually. Orange County is a county located in the state of Florida, in the United States. As of the 2010 census, the population was 1,145,956, making it the fifth-most populous county in Florida. The county seat is Orlando. Orange County is included in the Orlando-Kissimmee-Sanford, Florida Metropolitan Statistical Area."