| Rank | Country | Population | % of world | Date | Source (official or UN) |
| 1 | China | 1,404,810,000 | 18.0% | 11 Oct 2020 | National population clock |
| 2 | India | 1,368,266,736 | 17.5% | 11 Oct 2020 | National population clock |
| 3 | United States | 330,454,154 | 4.23% | 11 Oct 2020 | National population clock |
| 4 | Indonesia | 269,603,400 | 3.45% | 1 Jul 2020 | National annual projection |
| 5 | Pakistan | 220,892,331 | 2.83% | 1 Jul 2020 | UN Projection |
| 6 | Brazil | 212,184,009 | 2.71% | 11 Oct 2020 | National population clock |
| 7 | Nigeria | 206,139,587 | 2.64% | 1 Jul 2020 | UN Projection |
| 8 | Bangladesh | 169,452,112 | 2.17% | 11 Oct 2020 | National population clock |
| 9 | Russia | 146,748,590 | 1.88% | 1 Jan 2020 | National annual estimate |
| 10 | Mexico | 127,792,286 | 1.63% | 1 Jul 2020 | National annual projection |