Top 10 Countries by Population

Present: 


1. China 
2. India 
3. USA 
4. Indonesia 
5. Brazil 
6. Pakistan 
7. Russia 
8-9. Bangladesh or Japan? 
10. Nigeria 


Future (2050): 


1. India 
2. China 
3-4. Pakistan or USA? 
5. Indonesia 
6. Nigeria 
7. Brazil 
8. Bangladesh 
9. Russia 
10. Gemany or Mexico? (Possibly Japan might be out of the top 10)

Read more: http://wiki.answers.com/Q/What_are_the_top_ten_biggest_population_countries#ixzz1DMCm89NI