Scotch-Irish (or Scots-Irish) Americans are American descendants of Ulster Protestants who immigrated from northern Ireland to America during the 18th and 19th centuries, whose ancestors had originally migrated mainly from the Scottish Lowlands and northern England (and sometimes from the Anglo-Scottish border). In the 2017 American Community Survey, 5.39 million (1.7% of the population) reported Scottish ancestry, an additional 3 million (0.9% of the population) identified more specifically with Scotch-Irish ancestry, and many people who claim "American ancestry" may actually be of Scotch-Irish ancestry. The term Scotch-Irish is used primarily in the United States, with people in Great Britain or Ireland who are of a similar ancestry identifying as Ulster Scots people. These included 200,000 Scottish Presbyterians who settled in Ireland between 1608 and 1697. Many English-born settlers of this period were also Presbyterians, although the denomination is today most strongly identified with Scotland. When King Charles I attempted to force these Presbyterians into the Church of England in the 1630s, many chose to re-emigrate to North America where religious liberty was greater.