There are 12 US Post Offices in Creek County serving a total of 62,448 residents equating to 5,204 residents per post office. It's estimated that approximately 99,674 packages are handled across the 12 county post offices annually. Creek County is a county located in the U.S. state of Oklahoma. As of the 2010 census, the population was 69,967. Its county seat is Sapulpa. Creek County is part of the Tulsa, OK Metropolitan Statistical Area."