Saudi Arabia is 4.9 times larger than Iraq.
Area: 438,317 km2 World Factbook
Population: 32,585,692 (July 2014) World Factbook
Iraq, officially the Republic of Iraq, is a country in the Middle East that borders Turkey to the north, Iran to the east, Kuwait to the southeast, Saudi Arabia to the south, Jordan to the southwest, and Syria to the west. The capital, Baghdad, is in the center of the country. Wikipedia
Area: 2,149,690 km2 World Factbook
Population: 27,345,986 (July 2014) World Factbook
Saudi Arabia, officially known as the Kingdom of Saudi Arabia, is the largest Arab state in Western Asia by land area and the second-largest in the Arab world after Algeria. Wikipedia