Stiles is an unincorporated community and census-designated place (CDP) in Whitehall Township in Lehigh County, Pennsylvania. As of the 2010 census, the population was 1,113. It is part of the Lehigh Valley, which had a population of 861,899 and was the 68th most populous metropolitan area in the U.S. as of the 2020 census. It uses the Whitehall Township ZIP Code of 18052.