Orefield is a small unincorporated community in Lehigh County, Pennsylvania. The community is split between North Whitehall and South Whitehall townships. Orefield is part of the Lehigh Valley, which has a population of 861,899 and is the 68th-most populous metropolitan area in the U.S. as of the 2020 census. Located along Pennsylvania Route 309, Orefield has the ZIP Code of 18069. Its name is derived from the extensive deposits of limonite once mined here.