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 the world, after Vatican City. Its 19,009 inhabitants per square kilometre (49,230/sq mi) make it the most densely-populated sovereign state in the world.

As per the UN World Population Prospects, the estimated population of  Monaco in 2023 is 36,298 (36 thousand)

Source: World Population Prospects