Macao is 14 times larger than Monaco.
Area: 28 km2 World Factbook
Population: 587,914 (July 2014) World Factbook
Macau, also spelled Macao, is one of the two Special Administrative Regions of the People's Republic of China, the other being Hong Kong. Wikipedia
Area: 2 km2 World Factbook
Population: 30,508 (July 2014) World Factbook
Monaco, officially the Principality of Monaco, is a sovereign city-state and microstate, located on the French Riviera in Western Europe. It is bordered by France on three sides; one side borders the Mediterranean Sea. Wikipedia