Daniel Mathias (D. M.) Bare laid out Roaring Spring's first 50 building lots in 1865 after he and two partners decided to locate the region's first paper mill near the spring. These lots were located within and around the so-called village "triangle" defined by West Main, Spang, and East Main Streets. By 1873, the borough contained about 170 lots and 50 buildings, which included the paper and grist mills, three churches, a company store, a schoolhouse, and one hotel. The population stood at about 100. The triangle remained the industrial, commercial and retailing core of the town until 1957 when the bypass of East Main Street, PA Rt. 36, was built to the east of town through Taylor Township. As is true of many American small towns, many village merchants along with new businesses have since relocated to the new highway. The village core retains only a few shops and professional offices, but still holds the Roaring Spring Blank Book Company and Roaring Spring Water Bottling Company, all of the historic church buildings, the public library (the former Eldon Inn), the borough building, and the post office.