Jenks is a city in Tulsa County, Oklahoma, United States, and a suburb of Tulsa, in the northeastern part of the state. It is situated between the Arkansas River and U.S. Route 75. Jenks is one of the fastest-growing cities in Oklahoma. The city's population was 16,924 in the 2010 census, but by 2020, this had grown to 25,949. The Census estimated Jenks' population as 27,141 in 2022.

Tulsa County is located in the U.S. state of Oklahoma. As of the 2020 census, the population was 669,279, making it the second-most populous county in the state, behind only Oklahoma County. Its county seat and largest city is Tulsa, the second-largest city in the state. Founded at statehood, in 1907, it was named after the previously established city of Tulsa. Before statehood, the area was part of both the Creek Nation and the Cooweescoowee District of Cherokee Nation in Indian Territory.