Idaho (USA) is 3 times larger than Ireland.
Area: 70,273 km2 World Factbook
Population: 4,832,765 (July 2014) World Factbook
Ireland, also commonly referred to as the Republic of Ireland, is a sovereign state in Europe occupying about five-sixths of the island of Ireland. Wikipedia
Idaho is a state in the northwestern region of the United States. Idaho is the 14th largest, the 39th most populous, and the 7th least densely populated of the 50 United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Wikipedia