Renovo is a borough in Clinton County, Pennsylvania, United States, 28 miles northwest of Lock Haven. In 1900, 4,082 people lived there, and in 1910, 4,621 lived there, but in the 2010 census the borough population was 1,228. The borough is located on the West Branch Susquehanna River, and along Pennsylvania's Bucktail State Park Natural Area, centered on Pennsylvania Route 120, which winds through the surrounding mountains following the river.