New Mexico (USA) is 3.2 times larger than Korea (South).
Area: 99,720 km2 World Factbook
Population: 49,039,986 (July 2014) World Factbook
South Korea, officially the Republic of Korea, is a country in East Asia, constituting the southern part of the Korean Peninsula. The name Korea is derived from Goryeo (also spelt Koryo), a dynasty which ruled in the Middle Ages. Wikipedia
New Mexico is a state located in the southwest and western regions of the United States. It is usually considered one of the Mountain States. New Mexico is the 5th most extensive, the 36th most populous, and the 6th least densely populated of the 50 United States. Wikipedia