Analysis of demographic situation in Russia, India and Nigeria

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world, ranks ninth by population with nearly 146.75 million residents as of

January 1, 2020.
Most of them lived in the Central Federal District, where Moscow, the capital, is located, while the Far Eastern Federal District was the least populated. Besides Russians, the country is home to many other ethnic groups, including Tatars, Ukrainians, and Bashkirs.
Russia faces a demographic crisis, as its population shrinks and ages year-on-year and the number of deaths exceeds the number of births.

years (2018 est.)
-female: 61.1 years (2018 est.)
total population: 52.05 years
-male: 48.95 years

-female: 55.33 years (2012 est.)
total population: 46.94 years
male: 46.16 years
female: 47.76 years (2009 est.)
total population: 51.56 years
-male: 51.58 years
-female: 51.55 years (2000 est.)

with approximately 200 million people in an area of 920,000 km2 (360,000 sq mi), and

is also the country with the largest population in Africa[2] and the seventh largest population in the world.
-Approximately 50% of Nigerians are urban dwellers, with the rate of urbanization being estimated at 4.3%.
 -Nigeria is home to over 250 ethnic groups, with over 500 languages, and the variety of customs, and traditions among them gives the country great cultural diversity.
-The three largest ethnic groups are the Hausa 27.4% of the population; along with the Yoruba 21% and Igbo 14.1%. The Efik, Ibibio, Annang, and Ijaw constitute other Southeastern populations. The Urhobo-Isoko, Edo and Itsekiri constitute Nigerian's Midwest.
-Most of the population is a young population, with 42.54% between the ages of 0–14.[2
There is also a very high dependency ratio of the country at 88.2 dependants per 100 non-dependants.