what county is owasso, ok in
Owasso, Oklahoma. Owasso is a city in Rogers and Tulsa Counties in the U.S. state of Oklahoma, and a northern suburb of Tulsa. The population was 28,915 at the 2010 census. Originally settled in 1881 in Indian Territory, the town incorporated in 1904 just prior to Oklahoma statehood and was chartered as a city in 1972.