There are 3 US Post Offices in Dolores County serving a total of 2,010 residents equating to 670 residents per post office. It's estimated that approximately 3,208 packages are handled across the 3 county post offices annually. Dolores County is the seventh-least populous of the 64 counties of the U.S. state of Colorado. As of the 2010 census, the population was 2,064. The county seat is Dove Creek.