Millerstown is a borough in northeast Perry County, Pennsylvania, located along the Juniata River at the junction of Pennsylvania Route 17 and U.S. Routes 22/322.
Millerstown is a borough in northern Perry County, Pennsylvania, located 33 miles northwest of Harrisburg, Pennsylvania. Lying along the Juniata River, the borough sits at the junction of Pennsylvania Route 17 and U.S. Routes 22/322.