San Juan County
There are 5 US Post Offices in San Juan County serving a total of 11,480 residents equating to 2,296 residents per post office. It's estimated that approximately 18,323 packages are handled across the 5 county post offices annually. San Juan County is a county located in the southeastern portion of the U.S. state of Utah. As of the 2010 census, the population was 14,746. Its county seat is Monticello, while its most populous city is Blanding. The county was named by the Utah State Legislature for the San Juan River, itself named by Spanish explorers (in honor of Saint John). San Juan County borders Arizona, Colorado, and New Mexico at the Four Corners."