Climbing Hill is an unincorporated community in Woodbury County, Iowa, United States. Its elevation is 1,135 feet (346 m). The community was named by C. E. Ostrander, the first settler and postmaster, whose home was on high ground and could not be reached except by climbing a hill. The name was kept, though the community was moved several times and was finally located on level land around 1867. Although it is unincorporated, it has a post office, with the ZIP code of 51015. The community is part of the Sioux City, IA–NE–SD Metropolitan Statistical Area.