There are 33 US Post Offices in Oxford County serving a total of 57,920 residents equating to 1,755 residents per post office. It's estimated that approximately 92,447 packages are handled across the 33 county post offices annually. Oxford County is a county located in the state of Maine, in the United States. As of the 2010 Census, the county had a population of 57,833. Its county seat is the town of Paris. The county was formed on March 4, 1805 from northerly portions of York and Cumberland counties. It borders the Canadian province of Quebec. Part of Oxford County is included in the Lewiston-Auburn, Maine metropolitan New England City and Town Area while a different part of Oxford County is included in the Portland-South Portland-Biddeford, Maine metropolitan New England City and Town Area."