The CDP is in eastern Blair County, in the northwestern part of
Woodbury Township. It is bordered to the north by the
Frankstown Branch Juniata River and to the west by its tributary, Piney Creek.
Catharine Township is to the north across the Frankstown Branch.
Pennsylvania Route 866 forms the northeastern border of the Ganister CDP; it leads southeast (downriver) to
Williamsburg and northwest, upriver through the Lock Mountain / Short Mountain
water gap, to
U.S. Route 22 near
Point View. The
limestone quarry in Ganister is currently owned by Grannas Brothers, Inc. ==Demographics==