Hogg Rock is located in Linn County, in the U. S. state of Oregon. It is close to Santiam Pass, by the Hayrick Butte tuya, another feature produced from the interaction of volcanic eruptive materials with glaciers. It is close to the Mount Jefferson Wilderness, near where Oregon Route 22 and US Highway 20 intersect with the Cascade Range at Santiam Pass, and sits next to Oregon Route 126. Hogg Rock lies about north of Collier Cone, a cinder cone at the northern side of the base of the North Sister. The United States Geological Survey considers Hogg Rock part of the Three Fingered Jack quadrangle, while Siebert, Simkin, and Kimberly (2010) list it as a volcanic cone of Three Fingered Jack. Hogg Rock lies south of Three Fingered Jack and north of Hoodoo Butte and Hayrick Butte. According to the Geographic Names Information System, the volcano has an elevation of .