There are 14 US Post Offices in Lincoln County serving a total of 20,517 residents equating to 1,466 residents per post office. It's estimated that approximately 32,747 packages are handled across the 14 county post offices annually. Lincoln County is a county located in the U.S. state of New Mexico. As of the 2010 census, the population was 20,497. Its county seat is Carrizozo, while its largest community is Ruidoso."