Panama is 48% larger than Costa Rica.
Area: 51,100 km2 World Factbook
Population: 4,755,234 (July 2014) World Factbook
Costa Rica, officially the Republic of Costa Rica, is a country in Central America, bordered by Nicaragua to the north, Panama to the southeast, the Pacific Ocean to the west, the Caribbean Sea to the east, and Ecuador to the south of Cocos Island. Wikipedia
Area: 75,420 km2 World Factbook
Population: 3,608,431 (July 2014) World Factbook
Panama, officially the Republic of Panama, is the southernmost country of Central America and the whole of North America. Wikipedia