Sloan, IA

Zip code 51055 covers the town of Onawa, Iowa, situated along the beautiful Loess Hills Scenic Byway. The most notable landmarks in this area include the Lewis and Clark State Park, offering camping, fishing, and hiking opportunities, as well as the Monona County Historical Museum, showcasing the history of the region. Visitors to Onawa can also enjoy the scenic views along the nearby Missouri River.