Santa Catarina (Brazil) is 4.5 times larger than El Salvador.
Area: 21,041 km2 World Factbook
Population: 6,125,512 (July 2014) World Factbook
El Salvador, officially the Republic of El Salvador, is the smallest and the most densely populated country in Central America. The country's capital city and largest city is San Salvador. Important cultural and commercial centers for Central America on the whole include Santa Ana and San Miguel. Wikipedia
Santa Catarina is a state in southern Brazil. According to the Index of Economic Well-Being calculated between 2002 and 2008, Santa Catarina was the Brazilian state that revealed the highest economic well-being in relation to the others. Wikipedia