​SOUTH BETHLEHEM, now joined to Bethlehem, formerly a borough in Northampton co., Pa.; on the Philadelphia and Reading, the Lehigh Valley, and the Central of New Jersey railroads; 57 miles N. W. of Philadelphia. It contains Lehigh University, Moravian College for Women, St. Luke's Hospital, water-works, street railroad and electric lights, National and private banks, and several daily and weekly newspapers. Here are the Bethlehem Steel Works and manufactories of brass goods, machinery, coke, zinc, brick, etc. Pop. (1910) 19,973; (1920) 23,522.