There are 11 US Post Offices in Okaloosa County serving a total of 130,133 residents equating to 11,830 residents per post office. It's estimated that approximately 207,707 packages are handled across the 11 county post offices annually. Okaloosa County is a county located in the northwestern portion of the U.S. state of Florida, extending from the Gulf of Mexico to the Alabama state line. As of the 2010 census, the population was 180,822. Its county seat is Crestview. Okaloosa County is included in the Crestview-Fort Walton Beach-Destin, FL Metropolitan Statistical Area."