Where does the greatest cluster of people live in Russia?

The greatest cluster of people in Russia live in the western part of the country, in and around the capital city of Moscow. This region is home to over 100 million people, which is more than a third of the country's total population. The Moscow metropolitan area is one of the largest urban areas in the world, with a population of over 15 million people. The city of Moscow itself is home to over 12 million people, making it the most populous city in Russia. The Moscow region is also home to a number of other large cities, including Saint Petersburg, Kazan, and Nizhny Novgorod.