There are 4 US Post Offices in Juab County serving a total of 10,080 residents equating to 2,520 residents per post office. It's estimated that approximately 16,089 packages are handled across the 4 county post offices annually. Juab County /\u02c8d\u0292u\u02d0\u00e6b/ is a county located in the U.S. state of Utah. As of the 2010 census, the population was 10,246. Its county seat and largest city is Nephi. The county was named from a Native American word meaning thirsty valley, or possibly only valley. Juab County is part of the Provo\u2013Orem, UT Metropolitan Statistical Area, which is also included in the Salt Lake City-Provo-Orem, UT Combined Statistical Area."