Monaco, officially the Principality of Monaco, is a sovereign city-state, country, and microstate on the French Riviera in Western Europe. France borders the country on three sides while the other side borders the Mediterranean Sea. Monaco is about 15 km from the state border with Italy.
Monaco has an area of 2.020 km², making it the second-smallest country in the world after the Vatican. Its population as of 2018 is 38,682. With 19,009 inhabitants per square kilometre, it is the most densely-populated sovereign state in the world.