Ireton, IA

ZIP code 51027 is located in the state of Iowa, in Woodbury County. One of the most important landmarks in this area is the Sergeant Floyd Monument, which honors the only fatality of the Lewis and Clark Expedition. Additionally, the Sioux City Lewis and Clark Interpretive Center provides exhibits and information about the historic expedition. The zip code encompasses parts of Sioux City, a bustling city along the Missouri River.