Singapore is 4.9 times larger than Sarajevo.
Area: 697 km2 World Factbook
Population: 5,567,301 (July 2014) World Factbook
Singapore, officially the Republic of Singapore, is a sovereign city-state and island country in Southeast Asia. It lies off the southern tip of the Malay Peninsula and is 137 kilometres north of the equator. Wikipedia
Area: 144 km2 calculated
Sarajevo is the capital and largest city of Bosnia and Herzegovina, with an estimated population of 369,534. The Sarajevo metropolitan area, including Sarajevo, East Sarajevo and surrounding municipalities, is home to 608,354 inhabitants. Wikipedia