Miller Township was the eighteenth township to be created in Perry County, erected by the State Legislature on March 11, 1852. Four distinct parallel ridges traverse Miller Township from east-northeast to west-southwest and determine the main features of its physical geography- Buffalo Hills, Limestone Ridge, Mahanoy Ridge, and Dick's Hill. No stream of any importance is found within its limits. The largest is Losh's Run, which drains its southern portion and of which one arm forms its dividing line from Wheatfield Township. The basin of this stream is bounded by Mahanoy Ridge and Limestone Ridge, and ends at Baileysburg.