Crook county, named after General George Crook, for services performed in Indian campaigns in eastern Oregon, was cut off from the south end of Wasco county, by legislative act, October 9, 1882. The north line is drawn west from the bend of the John Day River, and east up the centre of the Wasco channel of said river to the west boundary of Grant county, thence on the line between Grant and Wasco counties to the south-east corner of Wasco, thence west to the summits of the Cascade Mountains, and thence along them to the intersection of the north line. It lies in the hilly region where the Blue Mountains intersect the foot-hills of the Cascade Range, and for years has been the grazing-ground of immense herds of cattle. There are also many valleys fit for agriculture. Prineville is the county seat. It is situated on Ochoco River, near its junction with Crooked River, a fork of Des Chutes, and has a population of several hundred. It was incorporated in 1880. Ochoco, Willoughby, Bridge Creek, and Scissorsville are the subordinate towns.