There are 6 US Post Offices in Saguache County serving a total of 6,419 residents equating to 1,070 residents per post office. It's estimated that approximately 10,245 packages are handled across the 6 county post offices annually. Saguache County /s\u0259\u02c8w\u0251\u02d0t\u0283/ is one of the 64 counties in the U.S. state of Colorado. As of the 2010 census, the population was 6,108. The county seat is Saguache."