The population of Mongolia is expected to grow by 35,000 in 2025 and reach 3,436,000 in 2026. Migration (including immigration and emigration) decreases population by 3,000 people yearly. On average there are 60,637 births and 22,763 deaths in Mongolia per year. Rate of natural increase is approximately 1.11 percent per year. The population density of Mongolia has changed from 1.1 in 1980 to 2.1 in 2023.
| Current population | 3,420,630 people at present (Saturday 19th of July 2025) | |
| Median Age | 30.7 years |
| Life expectancy | 70.9 years | |
| Population density | 2.2 per km2 |
| Year | Population | Year change | Migrants | Median age | Fertility rate | Density (Ppl/km2) | Urban population |
|---|---|---|---|---|---|---|---|
| 2025 | 3,402,000 | 35,000 (1.0%) | -3,000 | 30.7 | 2.46 | 2 | 2,666,000 (78.4%) |
| 2024 | 3,367,000 | 37,000 (1.1%) | -3,000 | 30.4 | 2 | 2,622,000 (77.9%) | |
| 2023 | 3,330,000 | 39,000 (1.2%) | -3,000 | 30.2 | 2 | 2,576,000 (77.3%) | |
| 2022 | 3,291,000 | 40,000 (1.2%) | -3,000 | 30.0 | 2 | 2,528,000 (76.8%) | |
| 2021 | 3,251,000 | 42,000 (1.3%) | -3,000 | 29.8 | 2 | 2,478,000 (76.2%) | |
| 2020 | 3,209,000 | 43,000 (1.3%) | -3,000 | 29.5 | 2.59 | 2 | 2,426,000 (75.6%) |
| 2019 | 0 | 0 (0.0%) | -3,000 | 29.3 | 2.63 | 2 | 2,373,000 (75.0%) |
| 2018 | 0 | 0 (0.0%) | -3,000 | 29.1 | 2.67 | 2 | 2,319,000 (74.3%) |
| 2017 | 0 | 0 (0.0%) | -3,000 | 28.9 | 2.71 | 2 | 2,263,000 (73.6%) |
| 2016 | 0 | 0 (0.0%) | -3,000 | 28.7 | 2.75 | 2 | 2,204,642 (72.8%) |
| 2015 | 2,976,877 | 52,981 (1.8%) | -3,000 | 28.6 | 2.79 | 2 | 2,144,542 (72.0%) |
| 2010 | 2,712,650 | 44,361 (1.6%) | -3,000 | 28.0 | 2.64 | 2 | 1,832,856 (67.6%) |
| 2005 | 2,526,446 | 29,614 (1.2%) | -3,000 | 26.9 | 2.17 | 2 | 1,578,877 (62.5%) |
| 2000 | 2,397,436 | 21,274 (0.9%) | -3,000 | 25.3 | 2.14 | 2 | 1,369,727 (57.1%) |
| 1995 | 2,298,039 | 17,543 (0.8%) | -10,493 | 24.1 | 2.74 | 1 | 1,305,401 (56.8%) |
| 1990 | 2,184,145 | 43,137 (2.0%) | -17,686 | 23.7 | 4.05 | 1 | 1,245,683 (57.0%) |
| 1985 | 1,921,881 | 50,791 (2.6%) | 23.5 | 5.35 | 1 | 1,057,803 (55.0%) | |
| 1980 | 1,689,622 | 43,331 (2.6%) | 23.5 | 6.21 | 1 | 880,006 (52.1%) | |
| 1975 | 1,479,651 | 41,226 (2.8%) | 23.8 | 7.14 | 1 | 719,939 (48.7%) | |
| 1970 | 1,278,825 | 36,611 (2.9%) | 24.4 | 7.57 | 1 | 576,136 (45.1%) | |
| 1965 | 1,107,124 | 32,610 (3.0%) | 25.4 | 7.59 | 1 | 466,254 (42.1%) | |
| 1960 | 955,505 | 26,673 (2.7%) | 26.8 | 6.95 | 1 | 340,915 (35.7%) |
In 2024 the population of Mongolia was 3,367,000 and the average age increased from 26.8 in 1960 to 30.4. Urban population has increased from 1,369,727 (57.1%) in 2000 to 2,666,000 (78.4%) in the current year. The population density of Mongolia has changed from 1.1 in 1980 to 2.1 in 2023.
| Year | Population | Year change | Migrants | Median age | Fertility rate | Density (Ppl/km2) | Urban population |
|---|---|---|---|---|---|---|---|
| 2020 | 0 | 0 (0.0%) | -3,000 | 29.5 | 2.59 | 2 | 2,426,000 (75.6%) |
| 2025 | 3,402,000 | 35,000 (1.0%) | -3,000 | 30.7 | 2.46 | 2 | 2,666,000 (78.4%) |
| 2030 | 3,561,000 | 30,000 (0.8%) | -3,000 | 32.0 | 2.36 | 2 | 2,864,000 (80.4%) |
| 2035 | 3,698,000 | 26,000 (0.7%) | -3,000 | 33.3 | 2.27 | 2 | 3,028,000 (81.9%) |
| 2040 | 3,827,000 | 26,000 (0.7%) | -3,000 | 34.4 | 2.20 | 3 | 3,172,000 (82.9%) |
| 2045 | 3,954,000 | 25,000 (0.6%) | -3,000 | 35.3 | 2.14 | 3 | 3,316,000 (83.9%) |
| 2050 | 4,075,000 | 23,000 (0.6%) | -3,000 | 36.0 | 2.10 | 3 | 3,454,000 (84.8%) |
The life expectancy at birth should reach 75.0 (71.1 years for male and 79.2 years for females). Population density will go up to 2.6 people per square kilometer.
The demographics of Mongolia constitutes of 1,727,000 women and 1,676,000 men, which means there are 971 men per 1000 women. As far as age distribution goes, 37.6% of population (1,278,131) is 19 or younger, 56.9% of population (1,936,759) is between age 20 and 64 and 5.4% of population (185,069) is over 65.