Sapulpa is a city in Creek and Tulsa counties in the U.S. state of Oklahoma. The population was 21,929 at the time of the 2020 census, compared with 20,544 at the 2010 census. It is the county seat of Creek County.

Creek County is a county located in the U.S. state of Oklahoma. As of the 2020 census, the population was 71,754. Its county seat is Sapulpa.