The latest officially reported population of Mongolia was 3,568,978 in 2025 vs 12,025 people in Nauru in 2025. In 2026, based on the adjusted UN estimation, the current Mongolia's population is 3,630,744 people compared to 12,139 in Nauru.
Population statistics:
- Mongolia's population is 299.1 times bigger than Nauru's.
- Mongolia is ranked the 132nd most populous country in the world, while Nauru is the 195th.
- The countries together account for 0.04% of the world: 0.04% for Mongolia vs 0.0001% for Nauru.
- For the last 10 years, Mongolia has had an average growth rate of +1.71% per year vs +1.03% in Nauru.
- Since 2006, the population of Mongolia has increased from 2.57M people to 3.63M (41.4% growth), while Nauru has grown from 10K to 12.1K (21% growth).
Mongolia vs Nauru: population by year and forecast
| Year | Population | |
|---|---|---|
Mongolia
|
Nauru
|
|
| 2100 | 5,630,532 | 20,708 |
| 2099 | 5,624,298 | 20,677 |
| 2098 | 5,616,442 | 20,636 |
| 2097 | 5,607,739 | 20,596 |
| 2096 | 5,598,366 | 20,561 |
| 2095 | 5,587,141 | 20,526 |
| 2094 | 5,575,743 | 20,479 |
| 2093 | 5,563,600 | 20,423 |
| 2092 | 5,550,506 | 20,377 |
| 2091 | 5,537,031 | 20,332 |
| 2090 | 5,522,419 | 20,276 |
| 2089 | 5,507,083 | 20,210 |
| 2088 | 5,491,226 | 20,143 |
| 2087 | 5,475,425 | 20,087 |
| 2086 | 5,459,661 | 20,019 |
| 2085 | 5,442,388 | 19,950 |
| 2084 | 5,424,928 | 19,872 |
| 2083 | 5,406,747 | 19,787 |
| 2082 | 5,388,623 | 19,700 |
| 2081 | 5,369,593 | 19,603 |
| 2080 | 5,349,817 | 19,517 |
| 2079 | 5,329,240 | 19,411 |
| 2078 | 5,307,283 | 19,304 |
| 2077 | 5,286,383 | 19,198 |
| 2076 | 5,264,220 | 19,089 |
| 2075 | 5,241,700 | 18,978 |
| 2074 | 5,218,897 | 18,866 |
| 2073 | 5,195,622 | 18,750 |
| 2072 | 5,172,532 | 18,630 |
| 2071 | 5,149,066 | 18,527 |
| 2070 | 5,124,853 | 18,388 |
| 2069 | 5,101,195 | 18,281 |
| 2068 | 5,077,035 | 18,160 |
| 2067 | 5,052,818 | 18,017 |
| 2066 | 5,027,552 | 17,896 |
| 2065 | 5,002,655 | 17,769 |
| 2064 | 4,978,185 | 17,641 |
| 2063 | 4,953,806 | 17,516 |
| 2062 | 4,929,364 | 17,394 |
| 2061 | 4,904,690 | 17,260 |
| 2060 | 4,878,877 | 17,129 |
| 2059 | 4,852,963 | 17,006 |
| 2058 | 4,826,761 | 16,874 |
| 2057 | 4,799,120 | 16,745 |
| 2056 | 4,771,151 | 16,605 |
| 2055 | 4,742,184 | 16,465 |
| 2054 | 4,711,735 | 16,328 |
| 2053 | 4,679,745 | 16,186 |
| 2052 | 4,646,658 | 16,042 |
| 2051 | 4,612,090 | 15,881 |
| 2050 | 4,576,701 | 15,731 |
| 2049 | 4,539,215 | 15,565 |
| 2048 | 4,500,638 | 15,405 |
| 2047 | 4,460,511 | 15,234 |
| 2046 | 4,419,188 | 15,058 |
| 2045 | 4,376,222 | 14,888 |
| 2044 | 4,333,010 | 14,712 |
| 2043 | 4,289,776 | 14,539 |
| 2042 | 4,245,757 | 14,357 |
| 2041 | 4,201,838 | 14,174 |
| 2040 | 4,158,320 | 13,990 |
| 2039 | 4,115,023 | 13,821 |
| 2038 | 4,072,646 | 13,666 |
| 2037 | 4,030,644 | 13,507 |
| 2036 | 3,989,867 | 13,358 |
| 2035 | 3,950,239 | 13,190 |
| 2034 | 3,911,316 | 13,035 |
| 2033 | 3,873,353 | 12,888 |
| 2032 | 3,836,311 | 12,753 |
| 2031 | 3,800,027 | 12,619 |
| 2030 | 3,763,374 | 12,499 |
| 2029 | 3,726,490 | 12,381 |
| 2028 | 3,688,767 | 12,286 |
| 2027 | 3,650,012 | 12,177 |
| 2026 | 3,610,395 | 12,100 |
| 2025 | 3,568,978 | 12,025 |
| 2024 | 3,524,788 | 11,947 |
| 2023 | 3,481,145 | 11,875 |
| 2022 | 3,433,748 | 11,801 |
| 2021 | 3,383,741 | 11,709 |
| 2020 | 3,327,204 | 11,643 |
| 2019 | 3,267,673 | 11,587 |
| 2018 | 3,208,189 | 11,477 |
| 2017 | 3,148,917 | 11,324 |
| 2016 | 3,088,856 | 11,150 |
| 2015 | 3,026,864 | 10,954 |
| 2014 | 2,963,113 | 10,742 |
| 2013 | 2,899,011 | 10,517 |
| 2012 | 2,839,705 | 10,267 |
| 2011 | 2,786,317 | 10,098 |
| 2010 | 2,738,622 | 10,043 |
| 2009 | 2,691,115 | 10,016 |
| 2008 | 2,643,201 | 10,009 |
| 2007 | 2,601,850 | 10,020 |
| 2006 | 2,567,168 | 10,034 |
| 2005 | 2,536,407 | 10,049 |
| 2004 | 2,508,412 | 10,060 |
| 2003 | 2,480,374 | 10,059 |
| 2002 | 2,449,027 | 10,082 |
| 2001 | 2,417,751 | 10,130 |
| 2000 | 2,388,299 | 10,168 |
| 1999 | 2,356,813 | 10,187 |
| 1998 | 2,323,809 | 10,198 |
| 1997 | 2,291,750 | 10,197 |
| 1996 | 2,259,507 | 10,183 |
| 1995 | 2,224,945 | 10,165 |
| 1994 | 2,189,395 | 10,137 |
| 1993 | 2,165,130 | 10,102 |
| 1992 | 2,167,790 | 10,021 |
| 1991 | 2,165,342 | 9,850 |
| 1990 | 2,098,710 | 9,622 |
| 1989 | 2,124,185 | 9,390 |
| 1988 | 2,076,322 | 9,165 |
| 1987 | 2,022,800 | 8,946 |
| 1986 | 1,970,965 | 8,742 |
| 1985 | 1,921,514 | 8,551 |
| 1984 | 1,874,349 | 8,377 |
| 1983 | 1,829,092 | 8,216 |
| 1982 | 1,785,364 | 8,040 |
| 1981 | 1,742,857 | 7,839 |
| 1980 | 1,701,335 | 7,649 |
| 1979 | 1,660,659 | 7,468 |
| 1978 | 1,619,468 | 7,298 |
| 1977 | 1,576,245 | 7,163 |
| 1976 | 1,531,945 | 7,064 |
| 1975 | 1,488,296 | 6,987 |
| 1974 | 1,446,050 | 6,923 |
| 1973 | 1,405,502 | 6,866 |
| 1972 | 1,366,821 | 6,812 |
| 1971 | 1,330,071 | 6,762 |
| 1970 | 1,295,272 | 6,710 |
| 1969 | 1,262,284 | 6,581 |
| 1968 | 1,229,930 | 6,328 |
| 1967 | 1,196,996 | 6,135 |
| 1966 | 1,163,754 | 6,043 |
| 1965 | 1,131,177 | 5,832 |
| 1964 | 1,100,234 | 5,515 |
| 1963 | 1,071,362 | 5,226 |
| 1962 | 1,041,444 | 4,979 |
| 1961 | 1,009,284 | 4,774 |
| 1960 | 977,595 | 4,607 |
Data sources: United Nations | World Population Prospects (2026–2100, retrieved 2026-07-08); World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/mongolia/nauru | CC BY 
From 2006 to 2016, the population of Mongolia increased by 521,688 people (a 20.3% growth), while Nauru gained 1,116 people (a 11.1% growth).
For the next 10 years, from 2016 to 2026, Mongolia gained 541,888 people (a 17.5% growth), while Nauru's population increased by 989 people (a 8.87% growth).
Mongolia was ranked 137th most populous country in 2006 and is 132nd in 2026. Nauru was ranked 196th in 2006 and ranked 195th now.
The UN's World Population Prospects forecasts that in 24 years (in 2050) Mongolia's population will grow by 26.1% to 4,576,701 people with a rank change from 132nd to 130th. The population of Nauru will increase by 29.6% to 15,731 people and rank change from 195th to 194th.
Mongolia is projected to reach its peak in 2100 at 5.63M people compared to the peak of 20.7K people in 2100 for Nauru.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Mongolia
|
Nauru
|
|
| 2100 | 0.11% | 0.15% |
| 2099 | 0.14% | 0.2% |
| 2098 | 0.16% | 0.19% |
| 2097 | 0.17% | 0.17% |
| 2096 | 0.2% | 0.17% |
| 2095 | 0.2% | 0.23% |
| 2094 | 0.22% | 0.27% |
| 2093 | 0.24% | 0.23% |
| 2092 | 0.24% | 0.22% |
| 2091 | 0.26% | 0.28% |
| 2090 | 0.28% | 0.33% |
| 2089 | 0.29% | 0.33% |
| 2088 | 0.29% | 0.28% |
| 2087 | 0.29% | 0.34% |
| 2086 | 0.32% | 0.35% |
| 2085 | 0.32% | 0.39% |
| 2084 | 0.34% | 0.43% |
| 2083 | 0.34% | 0.44% |
| 2082 | 0.35% | 0.5% |
| 2081 | 0.37% | 0.44% |
| 2080 | 0.39% | 0.54% |
| 2079 | 0.41% | 0.56% |
| 2078 | 0.4% | 0.55% |
| 2077 | 0.42% | 0.57% |
| 2076 | 0.43% | 0.59% |
| 2075 | 0.44% | 0.6% |
| 2074 | 0.45% | 0.62% |
| 2073 | 0.45% | 0.65% |
| 2072 | 0.46% | 0.56% |
| 2071 | 0.47% | 0.75% |
| 2070 | 0.46% | 0.59% |
| 2069 | 0.48% | 0.66% |
| 2068 | 0.48% | 0.8% |
| 2067 | 0.5% | 0.68% |
| 2066 | 0.5% | 0.71% |
| 2065 | 0.49% | 0.73% |
| 2064 | 0.49% | 0.71% |
| 2063 | 0.5% | 0.7% |
| 2062 | 0.5% | 0.78% |
| 2061 | 0.53% | 0.76% |
| 2060 | 0.53% | 0.73% |
| 2059 | 0.54% | 0.78% |
| 2058 | 0.58% | 0.77% |
| 2057 | 0.59% | 0.85% |
| 2056 | 0.61% | 0.85% |
| 2055 | 0.65% | 0.84% |
| 2054 | 0.68% | 0.87% |
| 2053 | 0.71% | 0.9% |
| 2052 | 0.75% | 1.01% |
| 2051 | 0.77% | 0.96% |
| 2050 | 0.83% | 1.06% |
| 2049 | 0.86% | 1.04% |
| 2048 | 0.9% | 1.12% |
| 2047 | 0.94% | 1.17% |
| 2046 | 0.98% | 1.14% |
| 2045 | 1% | 1.2% |
| 2044 | 1.01% | 1.19% |
| 2043 | 1.04% | 1.27% |
| 2042 | 1.05% | 1.29% |
| 2041 | 1.05% | 1.32% |
| 2040 | 1.05% | 1.22% |
| 2039 | 1.04% | 1.14% |
| 2038 | 1.04% | 1.17% |
| 2037 | 1.02% | 1.12% |
| 2036 | 1% | 1.27% |
| 2035 | 1% | 1.19% |
| 2034 | 0.98% | 1.14% |
| 2033 | 0.97% | 1.06% |
| 2032 | 0.95% | 1.06% |
| 2031 | 0.97% | 0.96% |
| 2030 | 0.99% | 0.96% |
| 2029 | 1.02% | 0.77% |
| 2028 | 1.06% | 0.9% |
| 2027 | 1.1% | 0.64% |
| 2026 | 1.16% | 0.63% |
| 2025 | 1.25% | 0.65% |
| 2024 | 1.25% | 0.61% |
| 2023 | 1.38% | 0.63% |
| 2022 | 1.48% | 0.79% |
| 2021 | 1.7% | 0.57% |
| 2020 | 1.82% | 0.48% |
| 2019 | 1.85% | 0.96% |
| 2018 | 1.88% | 1.35% |
| 2017 | 1.94% | 1.56% |
| 2016 | 2.05% | 1.79% |
| 2015 | 2.15% | 1.97% |
| 2014 | 2.21% | 2.14% |
| 2013 | 2.09% | 2.43% |
| 2012 | 1.92% | 1.67% |
| 2011 | 1.74% | 0.55% |
| 2010 | 1.77% | 0.27% |
| 2009 | 1.81% | 0.07% |
| 2008 | 1.59% | -0.11% |
| 2007 | 1.35% | -0.14% |
| 2006 | 1.21% | -0.15% |
| 2005 | 1.12% | -0.11% |
| 2004 | 1.13% | 0.01% |
| 2003 | 1.28% | -0.23% |
| 2002 | 1.29% | -0.47% |
| 2001 | 1.23% | -0.37% |
| 2000 | 1.34% | -0.19% |
| 1999 | 1.42% | -0.11% |
| 1998 | 1.4% | 0.01% |
| 1997 | 1.43% | 0.14% |
| 1996 | 1.55% | 0.18% |
| 1995 | 1.62% | 0.28% |
| 1994 | 1.12% | 0.35% |
| 1993 | -0.12% | 0.81% |
| 1992 | 0.11% | 1.74% |
| 1991 | 3.17% | 2.37% |
| 1990 | -1.2% | 2.47% |
| 1989 | 2.31% | 2.45% |
| 1988 | 2.65% | 2.45% |
| 1987 | 2.63% | 2.33% |
| 1986 | 2.57% | 2.23% |
| 1985 | 2.52% | 2.08% |
| 1984 | 2.47% | 1.96% |
| 1983 | 2.45% | 2.19% |
| 1982 | 2.44% | 2.56% |
| 1981 | 2.44% | 2.48% |
| 1980 | 2.45% | 2.42% |
| 1979 | 2.54% | 2.33% |
| 1978 | 2.74% | 1.88% |
| 1977 | 2.89% | 1.4% |
| 1976 | 2.93% | 1.1% |
| 1975 | 2.92% | 0.92% |
| 1974 | 2.88% | 0.83% |
| 1973 | 2.83% | 0.79% |
| 1972 | 2.76% | 0.74% |
| 1971 | 2.69% | 0.77% |
| 1970 | 2.61% | 1.96% |
| 1969 | 2.63% | 4% |
| 1968 | 2.75% | 3.15% |
| 1967 | 2.86% | 1.52% |
| 1966 | 2.88% | 3.62% |
| 1965 | 2.81% | 5.75% |
| 1964 | 2.69% | 5.53% |
| 1963 | 2.87% | 4.96% |
| 1962 | 3.19% | 4.29% |
| 1961 | 3.24% | 3.62% |
Data sources: United Nations | World Population Prospects (2026–2100, retrieved 2026-07-08); World Bank | Health (1961–2025, retrieved 2026-07-08).
GeoRank.org/population/mongolia/nauru | CC BY
In 2025, the population of Mongolia grew by 1.25%, while Nauru's population grew by 0.65%.
Live population counters
|
Mongolia
|
Nauru
|
|
|---|---|---|
| Current population |
3630744
|
12139
|
| Population rank | 132/197 | 195/197 |
| Percent of world population | 0.04% | 0.0001% |
| One net population change |
11.9 minutes
|
4.69 days
|
| One birth every |
8.82 minutes
|
1.25 days
|
| One death every |
27.1 minutes
|
4.06 days
|
| Daily growth/decline | +121 | +0 |
| Annual growth/decline | +44,190 | +78 |
| Annual growth/decline rate | +1.25% | +0.65% |
| Population growth rate rank | 81/197 | 119/197 |
| One migration net change every |
4.63 days
|
3 days
|
| Annual migration change | +79 | -122 |
| Net migration rank | 74/196 | 82/196 |
| Foreign-born residents | 22,589 | 2,548 |
| Foreign-born residents rank | 169/195 | 191/195 |
| Foreign-born share of population | 0.6% | 21.3% |
| Foreign-born share rank | 171/195 | 29/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Mongolia
|
Nauru
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | 79 | - | -122 |
| 2024 | 40,182 | 83 | 203 | -121 |
| 2023 | 46,995 | 0 | 213 | -148 |
| 2022 | 47,730 | 0 | 226 | -144 |
| 2021 | 52,109 | 0 | 236 | -137 |
| 2020 | 60,888 | 0 | 246 | -214 |
| 2019 | 61,433 | 8,660 | 255 | -171 |
| 2018 | 60,635 | 7,811 | 265 | -131 |
| 2017 | 57,940 | 6,831 | 279 | -115 |
| 2016 | 62,086 | 5,633 | 289 | -105 |
| 2015 | 64,473 | 4,307 | 291 | -86 |
| 2014 | 66,078 | 2,921 | 290 | -69 |
| 2013 | 62,618 | 1,505 | 291 | -53 |
| 2012 | 55,942 | 351 | 292 | -38 |
| 2011 | 50,711 | -505 | 291 | -206 |
| 2010 | 44,914 | -6,444 | 281 | -246 |
| 2009 | 48,876 | -15,007 | 261 | -249 |
| 2008 | 45,843 | -17,277 | 240 | -243 |
| 2007 | 39,636 | -15,220 | 222 | -235 |
| 2006 | 33,609 | -11,934 | 209 | -224 |
| 2005 | 29,290 | -8,924 | 204 | -217 |
| 2004 | 28,418 | -8,148 | 202 | -210 |
| 2003 | 28,827 | -7,986 | 201 | -199 |
| 2002 | 30,439 | -8,934 | 200 | -247 |
| 2001 | 32,052 | -10,244 | 203 | -252 |
| 2000 | 32,753 | -11,241 | 207 | -236 |
| 1999 | 32,283 | -13,481 | 212 | -227 |
| 1998 | 31,757 | -10,315 | 214 | -217 |
| 1997 | 32,403 | -9,132 | 218 | -209 |
| 1996 | 33,741 | -8,626 | 221 | -204 |
| 1995 | 34,473 | -7,346 | 225 | -201 |
| 1994 | 34,711 | -5,449 | 229 | -196 |
| 1993 | 36,924 | -5,429 | 235 | -194 |
| 1992 | 42,437 | -8,404 | 237 | -121 |
| 1991 | 47,884 | -11,427 | 225 | 0 |
| 1990 | 49,443 | -11,881 | 214 | 20 |
| 1989 | 51,420 | -9,757 | 204 | 24 |
| 1988 | 51,588 | 2,459 | 195 | 29 |
| 1987 | 51,140 | 1,855 | 186 | 27 |
| 1986 | 50,329 | 354 | 178 | 21 |
| 1985 | 49,944 | -1,719 | 171 | 8 |
| 1984 | 48,562 | -2,452 | 166 | -2 |
| 1983 | 46,919 | -2,522 | 163 | -5 |
| 1982 | 45,179 | -2,132 | 162 | 30 |
| 1981 | 43,588 | -1,615 | 157 | 44 |
| 1980 | 42,343 | -1,268 | 145 | 44 |
| 1979 | 41,568 | -1,296 | 130 | 48 |
| 1978 | 40,276 | 1,833 | 111 | 40 |
| 1977 | 38,995 | 5,354 | 89 | 32 |
| 1976 | 37,670 | 6,577 | 79 | 0 |
| 1975 | 36,490 | 6,556 | 70 | 0 |
| 1974 | 35,297 | 6,153 | 63 | 0 |
| 1973 | 33,993 | 5,647 | 57 | 0 |
| 1972 | 32,727 | 4,999 | 53 | 0 |
| 1971 | 31,536 | 4,238 | 50 | 0 |
| 1970 | 30,558 | 3,263 | 49 | 0 |
| 1969 | 29,781 | 2,366 | 71 | 132 |
| 1968 | 29,017 | 3,535 | 116 | 180 |
| 1967 | 28,178 | 5,139 | 117 | -28 |
| 1966 | 27,338 | 5,837 | 123 | -32 |
| 1965 | 26,364 | 5,610 | 113 | 218 |
| 1964 | 25,317 | 4,599 | 100 | 203 |
| 1963 | 24,142 | 3,687 | 88 | 181 |
| 1962 | 22,960 | 9,049 | 75 | 158 |
| 1961 | 21,873 | 10,440 | 70 | 120 |
| 1960 | 20,726 | 10,334 | 72 | 76 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/mongolia/nauru | CC BY
Over the last 10 years, 94.3% of the population change in Mongolia is from natural causes (a gain of 554,471 people) and 5.67% is from migration (a gain of 33,325 people). In Nauru 64.6% is from natural causes (a gain of 2,503 people) and 35.4% is from migration (a loss of 1,372 people).
As of 2024, 22,589 residents or 0.6% of the population were not native-born in Mongolia, compared to 2,548 people or 21.3% in Nauru.
Biggest cities by population
Compare countries by 7 more topics
Population differences between Mongolia and Nauru
|
Mongolia
|
Nauru
|
|
|---|---|---|
| Life expectancy | 72.5 years | 62.6 years |
| Average age | 29.9 years | 25.5 years |
| Median age | 27.9 years | 21.3 years |
| Male:Female ratio | 49.8:50.2 | 50.9:49.1 |
| Fertility rate | 2.5 births per woman | 3.29 births per woman |
| Population density | 6 ppl/mi² | 1,567 ppl/mi² |
Population map with other countries
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08); United Nations | World Population Prospects (1960–2026, retrieved 2026-07-08); U.S. Census Bureau (1960–2025, retrieved 2026-07-08); Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08).
GeoRank.org/population/mongolia/nauru | CC BY
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Data sources:
- World Bank | Health (1960–2025, retrieved 2026-07-08)
- United Nations | World Population Prospects (1960–2100, retrieved 2026-07-08)
- U.S. Census Bureau (1960–2025, retrieved 2026-07-08)
- Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08)
- Wikidata (2026, retrieved 2026-07-08)
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