Blackwell is a city in Kay County, Oklahoma, United States, located at the intersection of U.S. Highway 177 and State Highway 11 along Interst…Blackwell is a city in Kay County, Oklahoma, United States, located at the intersection of U.S. Highway 177 and State Highway 11 along Interstate 35. The population was 6,085 as of the 2020 census. Blackwell was established following the September 16, 1893 Cherokee Outlet land run by A. J. Blackwell. Blackwell has an agricultural and fossil fuel based economy.
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