| 
 | 
 
  | 
Rank | 
Country | 
2012Population
 | 
2050Expected Pop.
 |  
  | 
1 | 
China | 
1,343,239,923 | 
1,303,723,332 |  
  | 
2 | 
India | 
1,205,073,612 | 
1,656,553,632 |  
  | 
3 | 
United States | 
313,847,465 | 
439,010,253 |  
  | 
4 | 
Indonesia | 
248,645,008 | 
313,020,847 |  
  | 
5 | 
Brazil | 
193,946,886 | 
260,692,493 |  
  | 
6 | 
Pakistan | 
190,291,129 | 
276,428,758 |  
  | 
7 | 
Bangladesh | 
161,083,804 | 
233,587,279 |  
  | 
8 | 
Nigeria | 
170,123,740 | 
264,262,405 |  
  | 
9 | 
Russia | 
138,739,892 | 
109,187,353 |  
  | 
10 | 
Japan | 
127,368,088 | 
93,673,826 |  
 | 
 | 
 |