The latest officially reported population of Mongolia was 3,568,978 in 2025 vs 180,149 people in Saint Lucia in 2025. In 2026, based on the adjusted UN estimation, the current Mongolia's population is 3,630,744 people compared to 180,676 in Saint Lucia.
Population statistics:
- Mongolia's population is 20.1 times bigger than Saint Lucia's.
- Mongolia is ranked the 132nd most populous country in the world, while Saint Lucia is the 178th.
- The countries together account for 0.05% of the world: 0.04% for Mongolia vs 0.002% for Saint Lucia.
- For the last 10 years, Mongolia has had an average growth rate of +1.71% per year vs +0.31% in Saint Lucia.
- Since 2006, the population of Mongolia has increased from 2.57M people to 3.63M (41.4% growth), while Saint Lucia has grown from 167K to 181K (8.42% growth).
Mongolia vs Saint Lucia: population by year and forecast
| Year | Population | |
|---|---|---|
Mongolia
|
Saint Lucia
|
|
| 2100 | 5,630,532 | 108,837 |
| 2099 | 5,624,298 | 109,902 |
| 2098 | 5,616,442 | 110,987 |
| 2097 | 5,607,739 | 112,079 |
| 2096 | 5,598,366 | 113,197 |
| 2095 | 5,587,141 | 114,352 |
| 2094 | 5,575,743 | 115,520 |
| 2093 | 5,563,600 | 116,712 |
| 2092 | 5,550,506 | 117,943 |
| 2091 | 5,537,031 | 119,217 |
| 2090 | 5,522,419 | 120,487 |
| 2089 | 5,507,083 | 121,795 |
| 2088 | 5,491,226 | 123,153 |
| 2087 | 5,475,425 | 124,518 |
| 2086 | 5,459,661 | 125,900 |
| 2085 | 5,442,388 | 127,292 |
| 2084 | 5,424,928 | 128,725 |
| 2083 | 5,406,747 | 130,153 |
| 2082 | 5,388,623 | 131,599 |
| 2081 | 5,369,593 | 133,075 |
| 2080 | 5,349,817 | 134,563 |
| 2079 | 5,329,240 | 136,058 |
| 2078 | 5,307,283 | 137,536 |
| 2077 | 5,286,383 | 139,033 |
| 2076 | 5,264,220 | 140,538 |
| 2075 | 5,241,700 | 142,015 |
| 2074 | 5,218,897 | 143,519 |
| 2073 | 5,195,622 | 144,999 |
| 2072 | 5,172,532 | 146,447 |
| 2071 | 5,149,066 | 147,876 |
| 2070 | 5,124,853 | 149,289 |
| 2069 | 5,101,195 | 150,694 |
| 2068 | 5,077,035 | 152,083 |
| 2067 | 5,052,818 | 153,458 |
| 2066 | 5,027,552 | 154,825 |
| 2065 | 5,002,655 | 156,135 |
| 2064 | 4,978,185 | 157,438 |
| 2063 | 4,953,806 | 158,683 |
| 2062 | 4,929,364 | 159,905 |
| 2061 | 4,904,690 | 161,106 |
| 2060 | 4,878,877 | 162,327 |
| 2059 | 4,852,963 | 163,483 |
| 2058 | 4,826,761 | 164,600 |
| 2057 | 4,799,120 | 165,696 |
| 2056 | 4,771,151 | 166,752 |
| 2055 | 4,742,184 | 167,809 |
| 2054 | 4,711,735 | 168,844 |
| 2053 | 4,679,745 | 169,865 |
| 2052 | 4,646,658 | 170,854 |
| 2051 | 4,612,090 | 171,791 |
| 2050 | 4,576,701 | 172,723 |
| 2049 | 4,539,215 | 173,613 |
| 2048 | 4,500,638 | 174,493 |
| 2047 | 4,460,511 | 175,320 |
| 2046 | 4,419,188 | 176,064 |
| 2045 | 4,376,222 | 176,768 |
| 2044 | 4,333,010 | 177,462 |
| 2043 | 4,289,776 | 178,075 |
| 2042 | 4,245,757 | 178,659 |
| 2041 | 4,201,838 | 179,227 |
| 2040 | 4,158,320 | 179,727 |
| 2039 | 4,115,023 | 180,191 |
| 2038 | 4,072,646 | 180,634 |
| 2037 | 4,030,644 | 181,001 |
| 2036 | 3,989,867 | 181,267 |
| 2035 | 3,950,239 | 181,460 |
| 2034 | 3,911,316 | 181,613 |
| 2033 | 3,873,353 | 181,676 |
| 2032 | 3,836,311 | 181,680 |
| 2031 | 3,800,027 | 181,614 |
| 2030 | 3,763,374 | 181,477 |
| 2029 | 3,726,490 | 181,299 |
| 2028 | 3,688,767 | 181,079 |
| 2027 | 3,650,012 | 180,826 |
| 2026 | 3,610,395 | 180,519 |
| 2025 | 3,568,978 | 180,149 |
| 2024 | 3,524,788 | 179,744 |
| 2023 | 3,481,145 | 179,285 |
| 2022 | 3,433,748 | 178,781 |
| 2021 | 3,383,741 | 178,522 |
| 2020 | 3,327,204 | 178,250 |
| 2019 | 3,267,673 | 177,661 |
| 2018 | 3,208,189 | 177,017 |
| 2017 | 3,148,917 | 176,342 |
| 2016 | 3,088,856 | 175,646 |
| 2015 | 3,026,864 | 174,905 |
| 2014 | 2,963,113 | 174,138 |
| 2013 | 2,899,011 | 173,369 |
| 2012 | 2,839,705 | 172,587 |
| 2011 | 2,786,317 | 171,801 |
| 2010 | 2,738,622 | 170,906 |
| 2009 | 2,691,115 | 169,869 |
| 2008 | 2,643,201 | 168,808 |
| 2007 | 2,601,850 | 167,758 |
| 2006 | 2,567,168 | 166,639 |
| 2005 | 2,536,407 | 165,450 |
| 2004 | 2,508,412 | 164,239 |
| 2003 | 2,480,374 | 162,976 |
| 2002 | 2,449,027 | 161,641 |
| 2001 | 2,417,751 | 160,237 |
| 2000 | 2,388,299 | 158,616 |
| 1999 | 2,356,813 | 156,702 |
| 1998 | 2,323,809 | 154,677 |
| 1997 | 2,291,750 | 152,569 |
| 1996 | 2,259,507 | 150,436 |
| 1995 | 2,224,945 | 148,208 |
| 1994 | 2,189,395 | 145,890 |
| 1993 | 2,165,130 | 143,726 |
| 1992 | 2,167,790 | 141,617 |
| 1991 | 2,165,342 | 139,520 |
| 1990 | 2,098,710 | 137,857 |
| 1989 | 2,124,185 | 136,512 |
| 1988 | 2,076,322 | 135,000 |
| 1987 | 2,022,800 | 133,227 |
| 1986 | 1,970,965 | 131,239 |
| 1985 | 1,921,514 | 129,159 |
| 1984 | 1,874,349 | 127,067 |
| 1983 | 1,829,092 | 125,044 |
| 1982 | 1,785,364 | 123,087 |
| 1981 | 1,742,857 | 121,166 |
| 1980 | 1,701,335 | 119,290 |
| 1979 | 1,660,659 | 117,528 |
| 1978 | 1,619,468 | 115,834 |
| 1977 | 1,576,245 | 114,135 |
| 1976 | 1,531,945 | 112,425 |
| 1975 | 1,488,296 | 110,725 |
| 1974 | 1,446,050 | 109,076 |
| 1973 | 1,405,502 | 107,498 |
| 1972 | 1,366,821 | 106,002 |
| 1971 | 1,330,071 | 104,564 |
| 1970 | 1,295,272 | 103,165 |
| 1969 | 1,262,284 | 101,879 |
| 1968 | 1,229,930 | 100,675 |
| 1967 | 1,196,996 | 99,504 |
| 1966 | 1,163,754 | 98,463 |
| 1965 | 1,131,177 | 97,493 |
| 1964 | 1,100,234 | 96,505 |
| 1963 | 1,071,362 | 95,519 |
| 1962 | 1,041,444 | 94,505 |
| 1961 | 1,009,284 | 93,490 |
| 1960 | 977,595 | 92,585 |
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/saint-lucia | CC BY 
From 2006 to 2016, the population of Mongolia increased by 521,688 people (a 20.3% growth), while Saint Lucia gained 9,007 people (a 5.41% growth).
For the next 10 years, from 2016 to 2026, Mongolia gained 541,888 people (a 17.5% growth), while Saint Lucia's population increased by 5,030 people (a 2.86% growth).
Mongolia was ranked 137th most populous country in 2006 and is 132nd in 2026. Saint Lucia was ranked 177th in 2006 and ranked 178th 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 Saint Lucia will decrease by 4.4% to 172,723 people and rank change from 178th to 179th.
Mongolia is projected to reach its peak in 2100 at 5.63M people compared to the peak of 182K people in 2032 for Saint Lucia.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Mongolia
|
Saint Lucia
|
|
| 2100 | 0.11% | -0.97% |
| 2099 | 0.14% | -0.98% |
| 2098 | 0.16% | -0.97% |
| 2097 | 0.17% | -0.99% |
| 2096 | 0.2% | -1.01% |
| 2095 | 0.2% | -1.01% |
| 2094 | 0.22% | -1.02% |
| 2093 | 0.24% | -1.04% |
| 2092 | 0.24% | -1.07% |
| 2091 | 0.26% | -1.05% |
| 2090 | 0.28% | -1.07% |
| 2089 | 0.29% | -1.1% |
| 2088 | 0.29% | -1.1% |
| 2087 | 0.29% | -1.1% |
| 2086 | 0.32% | -1.09% |
| 2085 | 0.32% | -1.11% |
| 2084 | 0.34% | -1.1% |
| 2083 | 0.34% | -1.1% |
| 2082 | 0.35% | -1.11% |
| 2081 | 0.37% | -1.11% |
| 2080 | 0.39% | -1.1% |
| 2079 | 0.41% | -1.07% |
| 2078 | 0.4% | -1.08% |
| 2077 | 0.42% | -1.07% |
| 2076 | 0.43% | -1.04% |
| 2075 | 0.44% | -1.05% |
| 2074 | 0.45% | -1.02% |
| 2073 | 0.45% | -0.99% |
| 2072 | 0.46% | -0.97% |
| 2071 | 0.47% | -0.95% |
| 2070 | 0.46% | -0.93% |
| 2069 | 0.48% | -0.91% |
| 2068 | 0.48% | -0.9% |
| 2067 | 0.5% | -0.88% |
| 2066 | 0.5% | -0.84% |
| 2065 | 0.49% | -0.83% |
| 2064 | 0.49% | -0.78% |
| 2063 | 0.5% | -0.76% |
| 2062 | 0.5% | -0.75% |
| 2061 | 0.53% | -0.75% |
| 2060 | 0.53% | -0.71% |
| 2059 | 0.54% | -0.68% |
| 2058 | 0.58% | -0.66% |
| 2057 | 0.59% | -0.63% |
| 2056 | 0.61% | -0.63% |
| 2055 | 0.65% | -0.61% |
| 2054 | 0.68% | -0.6% |
| 2053 | 0.71% | -0.58% |
| 2052 | 0.75% | -0.55% |
| 2051 | 0.77% | -0.54% |
| 2050 | 0.83% | -0.51% |
| 2049 | 0.86% | -0.5% |
| 2048 | 0.9% | -0.47% |
| 2047 | 0.94% | -0.42% |
| 2046 | 0.98% | -0.4% |
| 2045 | 1% | -0.39% |
| 2044 | 1.01% | -0.34% |
| 2043 | 1.04% | -0.33% |
| 2042 | 1.05% | -0.32% |
| 2041 | 1.05% | -0.28% |
| 2040 | 1.05% | -0.26% |
| 2039 | 1.04% | -0.25% |
| 2038 | 1.04% | -0.2% |
| 2037 | 1.02% | -0.15% |
| 2036 | 1% | -0.11% |
| 2035 | 1% | -0.08% |
| 2034 | 0.98% | -0.03% |
| 2033 | 0.97% | -0.002% |
| 2032 | 0.95% | 0.04% |
| 2031 | 0.97% | 0.08% |
| 2030 | 0.99% | 0.1% |
| 2029 | 1.02% | 0.12% |
| 2028 | 1.06% | 0.14% |
| 2027 | 1.1% | 0.17% |
| 2026 | 1.16% | 0.21% |
| 2025 | 1.25% | 0.23% |
| 2024 | 1.25% | 0.26% |
| 2023 | 1.38% | 0.28% |
| 2022 | 1.48% | 0.15% |
| 2021 | 1.7% | 0.15% |
| 2020 | 1.82% | 0.33% |
| 2019 | 1.85% | 0.36% |
| 2018 | 1.88% | 0.38% |
| 2017 | 1.94% | 0.4% |
| 2016 | 2.05% | 0.42% |
| 2015 | 2.15% | 0.44% |
| 2014 | 2.21% | 0.44% |
| 2013 | 2.09% | 0.45% |
| 2012 | 1.92% | 0.46% |
| 2011 | 1.74% | 0.52% |
| 2010 | 1.77% | 0.61% |
| 2009 | 1.81% | 0.63% |
| 2008 | 1.59% | 0.63% |
| 2007 | 1.35% | 0.67% |
| 2006 | 1.21% | 0.72% |
| 2005 | 1.12% | 0.74% |
| 2004 | 1.13% | 0.77% |
| 2003 | 1.28% | 0.83% |
| 2002 | 1.29% | 0.88% |
| 2001 | 1.23% | 1.02% |
| 2000 | 1.34% | 1.22% |
| 1999 | 1.42% | 1.31% |
| 1998 | 1.4% | 1.38% |
| 1997 | 1.43% | 1.42% |
| 1996 | 1.55% | 1.5% |
| 1995 | 1.62% | 1.59% |
| 1994 | 1.12% | 1.51% |
| 1993 | -0.12% | 1.49% |
| 1992 | 0.11% | 1.5% |
| 1991 | 3.17% | 1.21% |
| 1990 | -1.2% | 0.99% |
| 1989 | 2.31% | 1.12% |
| 1988 | 2.65% | 1.33% |
| 1987 | 2.63% | 1.51% |
| 1986 | 2.57% | 1.61% |
| 1985 | 2.52% | 1.65% |
| 1984 | 2.47% | 1.62% |
| 1983 | 2.45% | 1.59% |
| 1982 | 2.44% | 1.59% |
| 1981 | 2.44% | 1.57% |
| 1980 | 2.45% | 1.5% |
| 1979 | 2.54% | 1.46% |
| 1978 | 2.74% | 1.49% |
| 1977 | 2.89% | 1.52% |
| 1976 | 2.93% | 1.54% |
| 1975 | 2.92% | 1.51% |
| 1974 | 2.88% | 1.47% |
| 1973 | 2.83% | 1.41% |
| 1972 | 2.76% | 1.38% |
| 1971 | 2.69% | 1.36% |
| 1970 | 2.61% | 1.26% |
| 1969 | 2.63% | 1.2% |
| 1968 | 2.75% | 1.18% |
| 1967 | 2.86% | 1.06% |
| 1966 | 2.88% | 0.99% |
| 1965 | 2.81% | 1.02% |
| 1964 | 2.69% | 1.03% |
| 1963 | 2.87% | 1.07% |
| 1962 | 3.19% | 1.09% |
| 1961 | 3.24% | 0.98% |
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/saint-lucia | CC BY
In 2025, the population of Mongolia grew by 1.25%, while Saint Lucia's population grew by 0.23%.
Live population counters
|
Mongolia
|
Saint Lucia
|
|
|---|---|---|
| Current population |
3630744
|
180676
|
| Population rank | 132/197 | 178/197 |
| Percent of world population | 0.04% | 0.002% |
| One net population change |
11.9 minutes
|
21.7 hours
|
| One birth every |
8.82 minutes
|
4.35 hours
|
| One death every |
27.1 minutes
|
5.6 hours
|
| Daily growth/decline | +121 | +1 |
| Annual growth/decline | +44,190 | +405 |
| Annual growth/decline rate | +1.25% | +0.23% |
| Population growth rate rank | 81/197 | 150/197 |
| One migration net change every |
4.63 days
|
2.27 weeks
|
| Annual migration change | +79 | -23 |
| Net migration rank | 74/196 | 79/196 |
| Foreign-born residents | 22,589 | 8,079 |
| Foreign-born residents rank | 169/195 | 180/195 |
| Foreign-born share of population | 0.6% | 4.5% |
| Foreign-born share rank | 171/195 | 98/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Mongolia
|
Saint Lucia
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | 79 | - | -23 |
| 2024 | 40,182 | 83 | 449 | -7 |
| 2023 | 46,995 | 0 | 475 | 0 |
| 2022 | 47,730 | 0 | 530 | 0 |
| 2021 | 52,109 | 0 | -15 | 0 |
| 2020 | 60,888 | 0 | 562 | 0 |
| 2019 | 61,433 | 8,660 | 609 | 0 |
| 2018 | 60,635 | 7,811 | 694 | -18 |
| 2017 | 57,940 | 6,831 | 724 | -38 |
| 2016 | 62,086 | 5,633 | 767 | -57 |
| 2015 | 64,473 | 4,307 | 841 | -69 |
| 2014 | 66,078 | 2,921 | 852 | -90 |
| 2013 | 62,618 | 1,505 | 892 | -114 |
| 2012 | 55,942 | 351 | 916 | -135 |
| 2011 | 50,711 | -505 | 934 | -150 |
| 2010 | 44,914 | -6,444 | 1,176 | -170 |
| 2009 | 48,876 | -15,007 | 1,349 | -276 |
| 2008 | 45,843 | -17,277 | 1,369 | -331 |
| 2007 | 39,636 | -15,220 | 1,422 | -352 |
| 2006 | 33,609 | -11,934 | 1,511 | -339 |
| 2005 | 29,290 | -8,924 | 1,553 | -358 |
| 2004 | 28,418 | -8,148 | 1,615 | -378 |
| 2003 | 28,827 | -7,986 | 1,694 | -397 |
| 2002 | 30,439 | -8,934 | 1,774 | -409 |
| 2001 | 32,052 | -10,244 | 1,860 | -416 |
| 2000 | 32,753 | -11,241 | 1,967 | -176 |
| 1999 | 32,283 | -13,481 | 2,389 | -361 |
| 1998 | 31,757 | -10,315 | 2,294 | -268 |
| 1997 | 32,403 | -9,132 | 2,709 | -519 |
| 1996 | 33,741 | -8,626 | 2,649 | -571 |
| 1995 | 34,473 | -7,346 | 3,019 | -638 |
| 1994 | 34,711 | -5,449 | 2,976 | -721 |
| 1993 | 36,924 | -5,429 | 2,899 | -824 |
| 1992 | 42,437 | -8,404 | 2,981 | -834 |
| 1991 | 47,884 | -11,427 | 3,009 | -963 |
| 1990 | 49,443 | -11,881 | 3,061 | -1,790 |
| 1989 | 51,420 | -9,757 | 3,146 | -1,734 |
| 1988 | 51,588 | 2,459 | 3,229 | -1,606 |
| 1987 | 51,140 | 1,855 | 3,351 | -1,423 |
| 1986 | 50,329 | 354 | 3,496 | -1,453 |
| 1985 | 49,944 | -1,719 | 3,591 | -1,465 |
| 1984 | 48,562 | -2,452 | 3,526 | -1,468 |
| 1983 | 46,919 | -2,522 | 3,443 | -1,462 |
| 1982 | 45,179 | -2,132 | 3,360 | -1,423 |
| 1981 | 43,588 | -1,615 | 3,306 | -1,403 |
| 1980 | 42,343 | -1,268 | 3,275 | -1,422 |
| 1979 | 41,568 | -1,296 | 3,301 | -1,625 |
| 1978 | 40,276 | 1,833 | 3,340 | -1,635 |
| 1977 | 38,995 | 5,354 | 3,240 | -1,543 |
| 1976 | 37,670 | 6,577 | 3,166 | -1,444 |
| 1975 | 36,490 | 6,556 | 3,126 | -1,454 |
| 1974 | 35,297 | 6,153 | 3,106 | -1,472 |
| 1973 | 33,993 | 5,647 | 3,033 | -1,513 |
| 1972 | 32,727 | 4,999 | 3,028 | -1,566 |
| 1971 | 31,536 | 4,238 | 3,046 | -1,625 |
| 1970 | 30,558 | 3,263 | 3,093 | -1,709 |
| 1969 | 29,781 | 2,366 | 3,143 | -1,954 |
| 1968 | 29,017 | 3,535 | 3,154 | -1,937 |
| 1967 | 28,178 | 5,139 | 3,113 | -1,997 |
| 1966 | 27,338 | 5,837 | 3,028 | -2,065 |
| 1965 | 26,364 | 5,610 | 3,042 | -2,067 |
| 1964 | 25,317 | 4,599 | 3,074 | -2,079 |
| 1963 | 24,142 | 3,687 | 3,048 | -2,060 |
| 1962 | 22,960 | 9,049 | 3,124 | -2,082 |
| 1961 | 21,873 | 10,440 | 3,173 | -2,189 |
| 1960 | 20,726 | 10,334 | 3,202 | -2,366 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/mongolia/saint-lucia | 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 Saint Lucia 96.8% is from natural causes (a gain of 5,636 people) and 3.24% is from migration (a loss of 189 people).
As of 2024, 22,589 residents or 0.6% of the population were not native-born in Mongolia, compared to 8,079 people or 4.5% in Saint Lucia.
Biggest cities by population
|
Mongolia
|
|
|---|---|
| City | Population |
| Ulaanbaatar | 1.4M |
| Bulgan | 12.3K |
|
Saint Lucia
|
|
|---|---|
| City | Population |
| Castries | 20K |
| Vieux Fort | 15.8K |
Compare countries by 7 more topics
Population differences between Mongolia and Saint Lucia
|
Mongolia
|
Saint Lucia
|
|
|---|---|---|
| Life expectancy | 72.5 years | 73.2 years |
| Average age | 29.9 years | 36.8 years |
| Median age | 27.9 years | 35.7 years |
| Male:Female ratio | 49.8:50.2 | 49.3:50.7 |
| Fertility rate | 2.5 births per woman | 1.39 births per woman |
| Population density | 6 ppl/mi² | 766 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/saint-lucia | 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)
Creative Commons Attribution (CC BY) — you’re free to copy, share, remix, adapt, and use even commercially as long as you give appropriate credit and clearly indicate if you made changes. Other sources may be subject to different license terms.