Monaco, officially the Principality of Monaco, is a sovereign city-state and microstate on the French Riviera close to the Italian region of Liguria, in Western Europe. With an area of 2.1 km2 (0.81 sq mi), it is the second smallest sovereign state in Europe, after Vatican City. Its 19,009 inhabitants per square kilometer (49,230/sq mi) make it the most densely-populated sovereign state in Europe.

As per the UN World Population Prospects, the population of  Monaco in 2024 is 39,778 (39 thousand)

Source: World Population Prospects 2019