United States is 254,100 times larger than Norfolk Island.
Area: 36 km2 World Factbook
Population: 2,210 (July 2014) World Factbook
Norfolk Island is a small island in the Pacific Ocean located between Australia, New Zealand and New Caledonia, 1,412 kilometres directly east of mainland Australia's Evans Head, and about 900 kilometres from Lord Howe Island. Wikipedia
The United States of America, commonly referred to as the United States, America, and sometimes the States, is a federal republic consisting of 50 states and a federal district. The 48 contiguous states and Washington, D.C., are in central North America between Canada and Mexico. Wikipedia