BLACKWELL, a city of Kay county (Okla.), U.S.A., mid way between Oklahoma City and Wichita, 15m. from the Kansas State boundary. It is on Federal highway 177; the Frisco and the Santa Fe railways; and the lighted airway from Chicago to Dallas. It has an intermediate landing field. The population in 1927, according to special Federal census was 11,878; in 1930 it was 9,521. Blackwell is surrounded by productive gas and oil fields. Stock-raising and agriculture are also important local in dustries. It has grain elevators, oil refineries, a zinc smelter, and glass factories. It was settled and incorporated in 1893, follow ing the opening of the Cherokee Strip.