Lamoni is a city in Decatur County, Iowa, United States. The population was 2,444 at the 2000 census. Lamoni is the home of Graceland University, affiliated with the Community of Christ.
The city is a significant historic area for the Community of Christ (formerly known as the Reorganized Church of Jesus Christ of Latter Day Saints), which operates a historic site in Lamoni, the Liberty Hall museum. In 1870 a stewardship association of church members, known as the Order of Enoch, purchased over three thousand acres (12 km²) of land in southern Iowa as a place for gathering.
The city was named after Lamoni, a pacifist king mentioned in the Book of Mormon. Church headquarters relocated to the emerging community in 1881 and Joseph Smith III made Liberty Hall his home. Four church presidents of the Community of Christ (then called the Reorganized Church of Jesus Christ of Latter Day Saints) lived in Liberty Hall. The church was headquartered in Lamoni, Iowa, and Liberty Hall was a center of social and religious life for the community. During the next 60 years, Liberty Hall served as a home for the aged, a farmhouse, CCC Headquarters, and a private residence. Now restored to its 1900-1905 Victorian style, Liberty Hall reflects the culture of the large, middle class Smith family living in a small, mid-western town as well as the heritage of Community of Christ. Tours are available March through December. Lamoni also is known as a center for the arts with at least six galleries open to the public (including three at Graceland University).