Chicago is 92% larger than Malta.
Area: 316 km2 World Factbook
Population: 412,655 (July 2014) World Factbook
Malta is a southern European country in the Mediterranean Sea. It lies 80 km south of Sicily, 284 km east of Tunisia, and 333 km north of Libya. The country covers just over 316 km², making it one of the world's smallest and most densely populated countries. Wikipedia
Area: 608 km2 calculated
Chicago is the third most populous city in the United States, after New York City and Los Angeles. With 2.7 million residents, it is the most populous city in both the U.S. state of Illinois and the American Midwest. Wikipedia