There are 8 US Post Offices in Logan County serving a total of 28,548 residents equating to 3,569 residents per post office. It's estimated that approximately 45,566 packages are handled across the 8 county post offices annually. Logan County is a county located in the U.S. state of Oklahoma. As of the 2010 census, the population was 41,848. Its county seat is Guthrie. Logan County is part of the Oklahoma City, OK Metropolitan Statistical Area. Guthrie served as the capital of Oklahoma Territory from 1890 until 1907 and of the state of Oklahoma from 1907 until 1910."