Seligman is a city in Sugar Creek Township, Barry County, Missouri, United States. The population was 851 at the 2010 census. The tow…Seligman is a city in Sugar Creek Township, Barry County, Missouri, United States. The population was 851 at the 2010 census. The town is named after Joseph Seligman, a prominent 19th-century businessman. The name Seligman is of Yiddish derivation and means "a jolly, cheerful person".