Lehighton is a borough in Carbon County, Pennsylvania, United States. It is part of Northeastern Pennsylvania. Due in part to water power from the Lehigh River, Lehighton was an early center for U.S. industrialization. The Lehigh Valley Railroad was for years a major employer up until the post-World War II era when railroad and industry restructuring led to job a…Lehighton is a borough in Carbon County, Pennsylvania, United States. It is part of Northeastern Pennsylvania. Due in part to water power from the Lehigh River, Lehighton was an early center for U.S. industrialization. The Lehigh Valley Railroad was for years a major employer up until the post-World War II era when railroad and industry restructuring led to job and population losses.