There are 12 US Post Offices in Eagle County serving a total of 50,029 residents equating to 4,169 residents per post office. It's estimated that approximately 79,852 packages are handled across the 12 county post offices annually. Eagle County is one of the 64 counties of the U.S. state of Colorado. As of the 2010 census, the population was 52,197. The county seat is the Town of Eagle. The county is named for the Eagle River. Eagle County comprises the Edwards, CO Micropolitan Statistical Area."