Greenland
The Pitcairn Islands have a population of around 50 making it the least populated jurisdiction in the world, although it is not a sovereign nation. The Vatican is the world's smallest and least populated country at about 920 people.
Monaco, Singapore and South Korea are the most densely populated countries in the world. Mongolia, Namibia and Australia are least densely populated
this is a very hard question and impossible to answer unless you have been to every city in the world i don't know the name it also depends on what you call a city therefore it is an impossible question
Australia is the worlds smallest continent; however the least populated is Antarctica. Technically Australia is not an island. If it was, so would every other place in the world as everything is surrounded by water. Continents are not islands. The largest island in the world is Greenland.
Vatican City
The Vatican City.
Could be Rannoch Moor
i would have to say Vatican city is the least populated with a population of 821 people.
china
Antarctica Antarctica
Vatican city