Ireland, a large island in the Atlantic Ocean. It is divided into two parts: the Republic of Ireland, an independent country; and Northern Ireland, which is a part of the United Kingdom.
Ireland lies west of the island of Great Britain, from which it is separated by the North Channel, the Irish Sea, and St. George's Channel. It is the second largest of the British Isles. The total area is 32,587 square miles (84,400 km2). The northeast coast is about 13 miles (21 km) west of Scotland, across the North Channel. St. George's Channel, which separates the southeast coast from Wales, is 50 to 95 miles (80 to 153 km) wide. Ireland's greatest length (north to south) is 235 miles (378 km), its greatest width, about 175 miles (282 km).