| Country or Area | Year | Area | Sex | National and/or ethnic group | Record Type | Reliability | Source Year | Value | |
|---|
| Mongolia | 2020 | Total | Both Sexes | Total | Census - de jure - complete tabulation | Final figure, complete | 2021 | 3,174,565 |
| Mongolia | 2020 | Total | Both Sexes | Buryat-Bouriates | Census - de jure - complete tabulation | Final figure, complete | 2021 | 43,661 |
| Mongolia | 2020 | Total | Both Sexes | Chinese | Census - de jure - complete tabulation | Final figure, complete | 2021 | 5 |
| Mongolia | 2020 | Total | Both Sexes | Kazak | Census - de jure - complete tabulation | Final figure, complete | 2021 | 120,999 |
| Mongolia | 2020 | Total | Both Sexes | Russian | Census - de jure - complete tabulation | Final figure, complete | 2021 | 11 |
| Mongolia | 2020 | Total | Both Sexes | Tsakhur | Census - de jure - complete tabulation | Final figure, complete | 2021 | 11 |
| Mongolia | 2020 | Total | Both Sexes | Uzbek | Census - de jure - complete tabulation | Final figure, complete | 2021 | 202 |
| Mongolia | 2020 | Total | Both Sexes | Other | Census - de jure - complete tabulation | Final figure, complete | 2021 | 3,979 |
| Mongolia | 2020 | Total | Both Sexes | Barga | Census - de jure - complete tabulation | Final figure, complete | 2021 | 2,832 |
| Mongolia | 2020 | Total | Both Sexes | Bayad | Census - de jure - complete tabulation | Final figure, complete | 2021 | 63,775 |
| Mongolia | 2020 | Total | Both Sexes | Dariganga | Census - de jure - complete tabulation | Final figure, complete | 2021 | 36,419 |
| Mongolia | 2020 | Total | Both Sexes | Darkhad | Census - de jure - complete tabulation | Final figure, complete | 2021 | 24,549 |
| Mongolia | 2020 | Total | Both Sexes | Dorvod | Census - de jure - complete tabulation | Final figure, complete | 2021 | 83,719 |
| Mongolia | 2020 | Total | Both Sexes | Eljigen | Census - de jure - complete tabulation | Final figure, complete | 2021 | 1,034 |
| Mongolia | 2020 | Total | Both Sexes | Khalimag | Census - de jure - complete tabulation | Final figure, complete | 2021 | 16 |
| Mongolia | 2020 | Total | Both Sexes | Khalkh | Census - de jure - complete tabulation | Final figure, complete | 2021 | 2,659,985 |
| Mongolia | 2020 | Total | Both Sexes | Khamnigan | Census - de jure - complete tabulation | Final figure, complete | 2021 | 384 |
| Mongolia | 2020 | Total | Both Sexes | Kharchin | Census - de jure - complete tabulation | Final figure, complete | 2021 | 154 |
| Mongolia | 2020 | Total | Both Sexes | Khorchin | Census - de jure - complete tabulation | Final figure, complete | 2021 | 39 |
| Mongolia | 2020 | Total | Both Sexes | Khoshuud | Census - de jure - complete tabulation | Final figure, complete | 2021 | 382 |
| Mongolia | 2020 | Total | Both Sexes | Khotgoid | Census - de jure - complete tabulation | Final figure, complete | 2021 | 8,583 |
| Mongolia | 2020 | Total | Both Sexes | Khoton | Census - de jure - complete tabulation | Final figure, complete | 2021 | 12,057 |
| Mongolia | 2020 | Total | Both Sexes | Myangad | Census - de jure - complete tabulation | Final figure, complete | 2021 | 8,125 |
| Mongolia | 2020 | Total | Both Sexes | Sartuul | Census - de jure - complete tabulation | Final figure, complete | 2021 | 2,023 |
| Mongolia | 2020 | Total | Both Sexes | Torguud | Census - de jure - complete tabulation | Final figure, complete | 2021 | 15,596 |
| Mongolia | 2020 | Total | Both Sexes | Tsaatan | Census - de jure - complete tabulation | Final figure, complete | 2021 | 208 |
| Mongolia | 2020 | Total | Both Sexes | Tuva | Census - de jure - complete tabulation | Final figure, complete | 2021 | 2,354 |
| Mongolia | 2020 | Total | Both Sexes | Uriankhai | Census - de jure - complete tabulation | Final figure, complete | 2021 | 29,021 |
| Mongolia | 2020 | Total | Both Sexes | Uuld | Census - de jure - complete tabulation | Final figure, complete | 2021 | 14,666 |
| Mongolia | 2020 | Total | Both Sexes | Uzemchin | Census - de jure - complete tabulation | Final figure, complete | 2021 | 2,308 |
| Mongolia | 2020 | Total | Both Sexes | Zakhchin | Census - de jure - complete tabulation | Final figure, complete | 2021 | 37,407 |
| Mongolia | 2020 | Total | Both Sexes | Tumed | Census - de jure - complete tabulation | Final figure, complete | 2021 | 32 |
| Mongolia | 2020 | Total | Both Sexes | Tuved | Census - de jure - complete tabulation | Final figure, complete | 2021 | 1 |
| Mongolia | 2020 | Total | Both Sexes | Balba | Census - de jure - complete tabulation | Final figure, complete | 2021 | 14 |
| Mongolia | 2020 | Total | Both Sexes | Sunud | Census - de jure - complete tabulation | Final figure, complete | 2021 | 14 |