There are 17 US Post Offices in Licking County serving a total of 150,222 residents equating to 8,837 residents per post office. It's estimated that approximately 239,771 packages are handled across the 17 county post offices annually. Licking County is a county located in the U.S. state of Ohio. As of the 2010 census, the population was 166,492. Its county seat is Newark. The county was formed on January 30, 1808 from portions of Fairfield County. It is named for the salt licks that were in the area. Licking County is part of the Columbus, OH Metropolitan Statistical Area."