Odenton is a census-designated place (CDP) in Anne Arundel County, Maryland, United States. The population was 20,534 at the 2000 census. According to the 2010 Census the town's population has grown to 37,132. Its population grew by 80.8% and had the fastest population growth of any single town in western Anne Arundel County from 2000-2010. The town is named after former Governor of Maryland, Oden Bowie.