Boundary Street-Newberry Cotton Mills Historic District is a national historic district located at Newberry, Newberry County, South Carolina. The district encompasses 107 contributing buildings, 1 contributing site, and 1 contributing structure in Newberry. The district includes classical and vernacular inspired upper and middle class houses dating from 1857-1898. It also includes a relatively intact late-19th century mill village (c. 1884-1910) that surrounded the Newberry Cotton Mill (demolished).It was listed on the National Register of Historic Places in 1980.