Swedish Americans are an American ethnic group of people who have ancestral roots from Sweden. They primarily include the 1.2 million Swedish immigrants during 1885–1915 and their descendants. They formed tight-knit communities, primarily in the American Midwest, and intermarried with other Swedish-Americans. Most were Lutheran Christians who were affiliated with predecessor bodies of what are now the Evangelical Lutheran Church in America (ELCA) or Lutheran Church-Missouri Synod or North American Lutheran Church (NALC); some were Methodists.