Amelia is an unincorporated community and former village in Pierce and Batavia townships in Clermont County, Ohio, United States. The population was 12,575 at the 2020 census. Amelia incorporated in 1900. In November 2019, residents voted to dissolve the village over the imposition of a local income tax. Amelia was by far the most populous village in state history to be dissolved and the first to be partitioned between two townships.