| Rank | Country | Population | Date | % of world | Language |
|---|---|---|---|---|---|
| 1 | China | 1,368,710,000 | March 14, 2015 | 18.9% | 中文 |
| 2 | India | 1,268,220,000 | March 14, 2015 | 17.5% | हिन्दी |
| 3 | United States | 320,583,000 | March 14, 2015 | 4.43% | English |
| 4 | Indonesia | 255,461,700 | July 1, 2015 | 3.53% | |
| 5 | Brazil | 204,014,000 | March 14, 2015 | 2.82% | |
| 6 | Pakistan | 189,223,000 | March 14, 2015 | 2.62% | |
| 7 | Nigeria | 183,523,000 | July 1, 2015 | 2.54% | |
| 8 | Bangladesh | 157,986,000 | March 14, 2015 | 2.18% | |
| 9 | Russia | 146,270,033 | January 1, 2015 | 2.02% | Русский |
| 10 | Japan | 126,970,000 | February 1, 2015 | 1.76% | 日本語 |