The latest officially reported population of Mongolia was 3,568,978 in 2025 vs 240,254 people in Sao Tome and Principe in 2025. In 2026, based on the adjusted UN estimation, the current Mongolia's population is 3,630,744 people compared to 247,495 in Sao Tome and Principe.
Population statistics:
- Mongolia's population is 14.7 times bigger than Sao Tome and Principe's.
- Mongolia is ranked the 132nd most populous country in the world, while Sao Tome and Principe is the 176th.
- The countries together account for 0.05% of the world: 0.04% for Mongolia vs 0.003% for Sao Tome and Principe.
- For the last 10 years, Mongolia has had an average growth rate of +1.71% per year vs +1.83% in Sao Tome and Principe.
- Since 2006, the population of Mongolia has increased from 2.57M people to 3.63M (41.4% growth), while Sao Tome and Principe has grown from 166K to 247K (49.4% growth).
Mongolia vs Sao Tome and Principe: population by year and forecast
| Year | Population | |
|---|---|---|
Mongolia
|
Sao Tome
|
|
| 2100 | 5,630,532 | 538,656 |
| 2099 | 5,624,298 | 537,257 |
| 2098 | 5,616,442 | 535,715 |
| 2097 | 5,607,739 | 534,052 |
| 2096 | 5,598,366 | 532,281 |
| 2095 | 5,587,141 | 530,505 |
| 2094 | 5,575,743 | 528,585 |
| 2093 | 5,563,600 | 526,572 |
| 2092 | 5,550,506 | 524,436 |
| 2091 | 5,537,031 | 522,255 |
| 2090 | 5,522,419 | 519,929 |
| 2089 | 5,507,083 | 517,542 |
| 2088 | 5,491,226 | 515,028 |
| 2087 | 5,475,425 | 512,499 |
| 2086 | 5,459,661 | 509,949 |
| 2085 | 5,442,388 | 507,271 |
| 2084 | 5,424,928 | 504,516 |
| 2083 | 5,406,747 | 501,611 |
| 2082 | 5,388,623 | 498,655 |
| 2081 | 5,369,593 | 495,622 |
| 2080 | 5,349,817 | 492,416 |
| 2079 | 5,329,240 | 489,178 |
| 2078 | 5,307,283 | 485,864 |
| 2077 | 5,286,383 | 482,385 |
| 2076 | 5,264,220 | 478,877 |
| 2075 | 5,241,700 | 475,315 |
| 2074 | 5,218,897 | 471,700 |
| 2073 | 5,195,622 | 468,051 |
| 2072 | 5,172,532 | 464,286 |
| 2071 | 5,149,066 | 460,447 |
| 2070 | 5,124,853 | 456,490 |
| 2069 | 5,101,195 | 452,388 |
| 2068 | 5,077,035 | 448,306 |
| 2067 | 5,052,818 | 444,092 |
| 2066 | 5,027,552 | 439,773 |
| 2065 | 5,002,655 | 435,502 |
| 2064 | 4,978,185 | 431,068 |
| 2063 | 4,953,806 | 426,645 |
| 2062 | 4,929,364 | 422,127 |
| 2061 | 4,904,690 | 417,629 |
| 2060 | 4,878,877 | 413,061 |
| 2059 | 4,852,963 | 408,522 |
| 2058 | 4,826,761 | 403,970 |
| 2057 | 4,799,120 | 399,359 |
| 2056 | 4,771,151 | 394,790 |
| 2055 | 4,742,184 | 390,100 |
| 2054 | 4,711,735 | 385,416 |
| 2053 | 4,679,745 | 380,685 |
| 2052 | 4,646,658 | 375,964 |
| 2051 | 4,612,090 | 371,143 |
| 2050 | 4,576,701 | 366,347 |
| 2049 | 4,539,215 | 361,542 |
| 2048 | 4,500,638 | 356,694 |
| 2047 | 4,460,511 | 351,813 |
| 2046 | 4,419,188 | 346,841 |
| 2045 | 4,376,222 | 341,791 |
| 2044 | 4,333,010 | 336,747 |
| 2043 | 4,289,776 | 331,669 |
| 2042 | 4,245,757 | 326,608 |
| 2041 | 4,201,838 | 321,551 |
| 2040 | 4,158,320 | 316,415 |
| 2039 | 4,115,023 | 311,237 |
| 2038 | 4,072,646 | 306,029 |
| 2037 | 4,030,644 | 300,834 |
| 2036 | 3,989,867 | 295,584 |
| 2035 | 3,950,239 | 290,361 |
| 2034 | 3,911,316 | 285,145 |
| 2033 | 3,873,353 | 279,952 |
| 2032 | 3,836,311 | 274,798 |
| 2031 | 3,800,027 | 269,704 |
| 2030 | 3,763,374 | 264,687 |
| 2029 | 3,726,490 | 259,670 |
| 2028 | 3,688,767 | 254,717 |
| 2027 | 3,650,012 | 249,827 |
| 2026 | 3,610,395 | 245,033 |
| 2025 | 3,568,978 | 240,254 |
| 2024 | 3,524,788 | 235,536 |
| 2023 | 3,481,145 | 230,871 |
| 2022 | 3,433,748 | 226,305 |
| 2021 | 3,383,741 | 221,961 |
| 2020 | 3,327,204 | 217,435 |
| 2019 | 3,267,673 | 213,392 |
| 2018 | 3,208,189 | 210,187 |
| 2017 | 3,148,917 | 206,970 |
| 2016 | 3,088,856 | 203,689 |
| 2015 | 3,026,864 | 200,291 |
| 2014 | 2,963,113 | 196,767 |
| 2013 | 2,899,011 | 193,148 |
| 2012 | 2,839,705 | 189,439 |
| 2011 | 2,786,317 | 185,649 |
| 2010 | 2,738,622 | 181,802 |
| 2009 | 2,691,115 | 177,853 |
| 2008 | 2,643,201 | 173,793 |
| 2007 | 2,601,850 | 169,700 |
| 2006 | 2,567,168 | 165,638 |
| 2005 | 2,536,407 | 161,639 |
| 2004 | 2,508,412 | 157,705 |
| 2003 | 2,480,374 | 153,814 |
| 2002 | 2,449,027 | 149,922 |
| 2001 | 2,417,751 | 146,375 |
| 2000 | 2,388,299 | 144,018 |
| 1999 | 2,356,813 | 142,442 |
| 1998 | 2,323,809 | 140,751 |
| 1997 | 2,291,750 | 138,922 |
| 1996 | 2,259,507 | 136,962 |
| 1995 | 2,224,945 | 134,895 |
| 1994 | 2,189,395 | 132,732 |
| 1993 | 2,165,130 | 130,467 |
| 1992 | 2,167,790 | 128,110 |
| 1991 | 2,165,342 | 125,697 |
| 1990 | 2,098,710 | 122,980 |
| 1989 | 2,124,185 | 119,979 |
| 1988 | 2,076,322 | 116,939 |
| 1987 | 2,022,800 | 113,919 |
| 1986 | 1,970,965 | 111,150 |
| 1985 | 1,921,514 | 108,658 |
| 1984 | 1,874,349 | 106,394 |
| 1983 | 1,829,092 | 104,380 |
| 1982 | 1,785,364 | 102,508 |
| 1981 | 1,742,857 | 100,615 |
| 1980 | 1,701,335 | 98,544 |
| 1979 | 1,660,659 | 96,252 |
| 1978 | 1,619,468 | 93,794 |
| 1977 | 1,576,245 | 91,301 |
| 1976 | 1,531,945 | 88,922 |
| 1975 | 1,488,296 | 86,708 |
| 1974 | 1,446,050 | 84,672 |
| 1973 | 1,405,502 | 82,798 |
| 1972 | 1,366,821 | 81,041 |
| 1971 | 1,330,071 | 79,330 |
| 1970 | 1,295,272 | 77,626 |
| 1969 | 1,262,284 | 76,083 |
| 1968 | 1,229,930 | 74,765 |
| 1967 | 1,196,996 | 73,596 |
| 1966 | 1,163,754 | 72,576 |
| 1965 | 1,131,177 | 71,680 |
| 1964 | 1,100,234 | 70,865 |
| 1963 | 1,071,362 | 70,112 |
| 1962 | 1,041,444 | 69,403 |
| 1961 | 1,009,284 | 68,707 |
| 1960 | 977,595 | 68,012 |
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/sao-tome-and-principe | CC BY 
From 2006 to 2016, the population of Mongolia increased by 521,688 people (a 20.3% growth), while Sao Tome and Principe gained 38,051 people (a 23% growth).
For the next 10 years, from 2016 to 2026, Mongolia gained 541,888 people (a 17.5% growth), while Sao Tome and Principe's population increased by 43,806 people (a 21.5% growth).
Mongolia was ranked 137th most populous country in 2006 and is 132nd in 2026. Sao Tome and Principe was ranked 178th in 2006 and ranked 176th 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 Sao Tome and Principe will increase by 48% to 366,347 people and rank change from 176th to 175th.
Mongolia is projected to reach its peak in 2100 at 5.63M people compared to the peak of 539K people in 2100 for Sao Tome and Principe.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Mongolia
|
Sao Tome
|
|
| 2100 | 0.11% | 0.26% |
| 2099 | 0.14% | 0.29% |
| 2098 | 0.16% | 0.31% |
| 2097 | 0.17% | 0.33% |
| 2096 | 0.2% | 0.33% |
| 2095 | 0.2% | 0.36% |
| 2094 | 0.22% | 0.38% |
| 2093 | 0.24% | 0.41% |
| 2092 | 0.24% | 0.42% |
| 2091 | 0.26% | 0.45% |
| 2090 | 0.28% | 0.46% |
| 2089 | 0.29% | 0.49% |
| 2088 | 0.29% | 0.49% |
| 2087 | 0.29% | 0.5% |
| 2086 | 0.32% | 0.53% |
| 2085 | 0.32% | 0.55% |
| 2084 | 0.34% | 0.58% |
| 2083 | 0.34% | 0.59% |
| 2082 | 0.35% | 0.61% |
| 2081 | 0.37% | 0.65% |
| 2080 | 0.39% | 0.66% |
| 2079 | 0.41% | 0.68% |
| 2078 | 0.4% | 0.72% |
| 2077 | 0.42% | 0.73% |
| 2076 | 0.43% | 0.75% |
| 2075 | 0.44% | 0.77% |
| 2074 | 0.45% | 0.78% |
| 2073 | 0.45% | 0.81% |
| 2072 | 0.46% | 0.83% |
| 2071 | 0.47% | 0.87% |
| 2070 | 0.46% | 0.91% |
| 2069 | 0.48% | 0.91% |
| 2068 | 0.48% | 0.95% |
| 2067 | 0.5% | 0.98% |
| 2066 | 0.5% | 0.98% |
| 2065 | 0.49% | 1.03% |
| 2064 | 0.49% | 1.04% |
| 2063 | 0.5% | 1.07% |
| 2062 | 0.5% | 1.08% |
| 2061 | 0.53% | 1.11% |
| 2060 | 0.53% | 1.11% |
| 2059 | 0.54% | 1.13% |
| 2058 | 0.58% | 1.15% |
| 2057 | 0.59% | 1.16% |
| 2056 | 0.61% | 1.2% |
| 2055 | 0.65% | 1.22% |
| 2054 | 0.68% | 1.24% |
| 2053 | 0.71% | 1.26% |
| 2052 | 0.75% | 1.3% |
| 2051 | 0.77% | 1.31% |
| 2050 | 0.83% | 1.33% |
| 2049 | 0.86% | 1.36% |
| 2048 | 0.9% | 1.39% |
| 2047 | 0.94% | 1.43% |
| 2046 | 0.98% | 1.48% |
| 2045 | 1% | 1.5% |
| 2044 | 1.01% | 1.53% |
| 2043 | 1.04% | 1.55% |
| 2042 | 1.05% | 1.57% |
| 2041 | 1.05% | 1.62% |
| 2040 | 1.05% | 1.66% |
| 2039 | 1.04% | 1.7% |
| 2038 | 1.04% | 1.73% |
| 2037 | 1.02% | 1.78% |
| 2036 | 1% | 1.8% |
| 2035 | 1% | 1.83% |
| 2034 | 0.98% | 1.85% |
| 2033 | 0.97% | 1.88% |
| 2032 | 0.95% | 1.89% |
| 2031 | 0.97% | 1.9% |
| 2030 | 0.99% | 1.93% |
| 2029 | 1.02% | 1.94% |
| 2028 | 1.06% | 1.96% |
| 2027 | 1.1% | 1.96% |
| 2026 | 1.16% | 1.99% |
| 2025 | 1.25% | 2% |
| 2024 | 1.25% | 2.02% |
| 2023 | 1.38% | 2.02% |
| 2022 | 1.48% | 1.96% |
| 2021 | 1.7% | 2.08% |
| 2020 | 1.82% | 1.89% |
| 2019 | 1.85% | 1.52% |
| 2018 | 1.88% | 1.55% |
| 2017 | 1.94% | 1.61% |
| 2016 | 2.05% | 1.7% |
| 2015 | 2.15% | 1.79% |
| 2014 | 2.21% | 1.87% |
| 2013 | 2.09% | 1.96% |
| 2012 | 1.92% | 2.04% |
| 2011 | 1.74% | 2.12% |
| 2010 | 1.77% | 2.22% |
| 2009 | 1.81% | 2.34% |
| 2008 | 1.59% | 2.41% |
| 2007 | 1.35% | 2.45% |
| 2006 | 1.21% | 2.47% |
| 2005 | 1.12% | 2.49% |
| 2004 | 1.13% | 2.53% |
| 2003 | 1.28% | 2.6% |
| 2002 | 1.29% | 2.42% |
| 2001 | 1.23% | 1.64% |
| 2000 | 1.34% | 1.11% |
| 1999 | 1.42% | 1.2% |
| 1998 | 1.4% | 1.32% |
| 1997 | 1.43% | 1.43% |
| 1996 | 1.55% | 1.53% |
| 1995 | 1.62% | 1.63% |
| 1994 | 1.12% | 1.74% |
| 1993 | -0.12% | 1.84% |
| 1992 | 0.11% | 1.92% |
| 1991 | 3.17% | 2.21% |
| 1990 | -1.2% | 2.5% |
| 1989 | 2.31% | 2.6% |
| 1988 | 2.65% | 2.65% |
| 1987 | 2.63% | 2.49% |
| 1986 | 2.57% | 2.29% |
| 1985 | 2.52% | 2.13% |
| 1984 | 2.47% | 1.93% |
| 1983 | 2.45% | 1.83% |
| 1982 | 2.44% | 1.88% |
| 1981 | 2.44% | 2.1% |
| 1980 | 2.45% | 2.38% |
| 1979 | 2.54% | 2.62% |
| 1978 | 2.74% | 2.73% |
| 1977 | 2.89% | 2.68% |
| 1976 | 2.93% | 2.55% |
| 1975 | 2.92% | 2.4% |
| 1974 | 2.88% | 2.26% |
| 1973 | 2.83% | 2.17% |
| 1972 | 2.76% | 2.16% |
| 1971 | 2.69% | 2.2% |
| 1970 | 2.61% | 2.03% |
| 1969 | 2.63% | 1.76% |
| 1968 | 2.75% | 1.59% |
| 1967 | 2.86% | 1.41% |
| 1966 | 2.88% | 1.25% |
| 1965 | 2.81% | 1.15% |
| 1964 | 2.69% | 1.07% |
| 1963 | 2.87% | 1.02% |
| 1962 | 3.19% | 1.01% |
| 1961 | 3.24% | 1.02% |
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/sao-tome-and-principe | CC BY
In 2025, the population of Mongolia grew by 1.25%, while Sao Tome and Principe's population grew by 2%.
Live population counters
|
Mongolia
|
Sao Tome
|
|
|---|---|---|
| Current population |
3630744
|
247495
|
| Population rank | 132/197 | 176/197 |
| Percent of world population | 0.04% | 0.003% |
| One net population change |
11.9 minutes
|
1.86 hours
|
| One birth every |
8.82 minutes
|
1.32 hours
|
| One death every |
27.1 minutes
|
6.73 hours
|
| Daily growth/decline | +121 | +13 |
| Annual growth/decline | +44,190 | +4,718 |
| Annual growth/decline rate | +1.25% | +2% |
| Population growth rate rank | 81/197 | 50/197 |
| One migration net change every |
4.63 days
|
13.5 hours
|
| Annual migration change | +79 | -650 |
| Net migration rank | 74/196 | 90/196 |
| Foreign-born residents | 22,589 | 1,955 |
| Foreign-born residents rank | 169/195 | 194/195 |
| Foreign-born share of population | 0.6% | 0.8% |
| Foreign-born share rank | 171/195 | 162/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Mongolia
|
Sao Tome
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | 79 | - | -650 |
| 2024 | 40,182 | 83 | 5,315 | -604 |
| 2023 | 46,995 | 0 | 5,221 | -592 |
| 2022 | 47,730 | 0 | 5,102 | -592 |
| 2021 | 52,109 | 0 | 4,954 | -782 |
| 2020 | 60,888 | 0 | 4,874 | 0 |
| 2019 | 61,433 | 8,660 | 4,932 | -1,716 |
| 2018 | 60,635 | 7,811 | 4,957 | -1,757 |
| 2017 | 57,940 | 6,831 | 5,007 | -1,779 |
| 2016 | 62,086 | 5,633 | 5,125 | -1,793 |
| 2015 | 64,473 | 4,307 | 5,269 | -1,809 |
| 2014 | 66,078 | 2,921 | 5,381 | -1,801 |
| 2013 | 62,618 | 1,505 | 5,449 | -1,787 |
| 2012 | 55,942 | 351 | 5,501 | -1,739 |
| 2011 | 50,711 | -505 | 5,445 | -1,616 |
| 2010 | 44,914 | -6,444 | 5,391 | -1,529 |
| 2009 | 48,876 | -15,007 | 5,349 | -1,328 |
| 2008 | 45,843 | -17,277 | 5,297 | -1,203 |
| 2007 | 39,636 | -15,220 | 5,226 | -1,127 |
| 2006 | 33,609 | -11,934 | 5,057 | -1,031 |
| 2005 | 29,290 | -8,924 | 4,897 | -941 |
| 2004 | 28,418 | -8,148 | 4,810 | -894 |
| 2003 | 28,827 | -7,986 | 4,702 | -816 |
| 2002 | 30,439 | -8,934 | 4,591 | -690 |
| 2001 | 32,052 | -10,244 | 4,471 | -1,289 |
| 2000 | 32,753 | -11,241 | 4,334 | -2,798 |
| 1999 | 32,283 | -13,481 | 4,221 | -2,594 |
| 1998 | 31,757 | -10,315 | 4,120 | -2,364 |
| 1997 | 32,403 | -9,132 | 4,041 | -2,153 |
| 1996 | 33,741 | -8,626 | 3,993 | -1,974 |
| 1995 | 34,473 | -7,346 | 3,948 | -1,829 |
| 1994 | 34,711 | -5,449 | 3,860 | -1,644 |
| 1993 | 36,924 | -5,429 | 3,841 | -1,527 |
| 1992 | 42,437 | -8,404 | 3,822 | -1,432 |
| 1991 | 47,884 | -11,427 | 3,801 | -1,362 |
| 1990 | 49,443 | -11,881 | 3,719 | -727 |
| 1989 | 51,420 | -9,757 | 3,576 | -571 |
| 1988 | 51,588 | 2,459 | 3,544 | -465 |
| 1987 | 51,140 | 1,855 | 3,440 | -470 |
| 1986 | 50,329 | 354 | 3,180 | -614 |
| 1985 | 49,944 | -1,719 | 3,242 | -828 |
| 1984 | 48,562 | -2,452 | 3,163 | -1,041 |
| 1983 | 46,919 | -2,522 | 3,100 | -1,203 |
| 1982 | 45,179 | -2,132 | 3,047 | -1,203 |
| 1981 | 43,588 | -1,615 | 3,015 | -1,067 |
| 1980 | 42,343 | -1,268 | 2,965 | -770 |
| 1979 | 41,568 | -1,296 | 2,893 | -491 |
| 1978 | 40,276 | 1,833 | 2,800 | -279 |
| 1977 | 38,995 | 5,354 | 2,705 | -255 |
| 1976 | 37,670 | 6,577 | 2,608 | -302 |
| 1975 | 36,490 | 6,556 | 2,515 | -392 |
| 1974 | 35,297 | 6,153 | 2,422 | -474 |
| 1973 | 33,993 | 5,647 | 2,329 | -525 |
| 1972 | 32,727 | 4,999 | 2,232 | -517 |
| 1971 | 31,536 | 4,238 | 2,127 | -430 |
| 1970 | 30,558 | 3,263 | 1,980 | -279 |
| 1969 | 29,781 | 2,366 | 1,862 | -469 |
| 1968 | 29,017 | 3,535 | 1,767 | -520 |
| 1967 | 28,178 | 5,139 | 1,693 | -606 |
| 1966 | 27,338 | 5,837 | 1,642 | -688 |
| 1965 | 26,364 | 5,610 | 1,611 | -765 |
| 1964 | 25,317 | 4,599 | 1,600 | -819 |
| 1963 | 24,142 | 3,687 | 1,609 | -886 |
| 1962 | 22,960 | 9,049 | 1,625 | -927 |
| 1961 | 21,873 | 10,440 | 1,657 | -960 |
| 1960 | 20,726 | 10,334 | 1,547 | -860 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/mongolia/sao-tome-and-principe | 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 Sao Tome and Principe 81.6% is from natural causes (a gain of 50,756 people) and 18.4% is from migration (a loss of 11,424 people).
As of 2024, 22,589 residents or 0.6% of the population were not native-born in Mongolia, compared to 1,955 people or 0.8% in Sao Tome and Principe.
Biggest cities by population
Compare countries by 7 more topics
Population differences between Mongolia and Sao Tome and Principe
|
Mongolia
|
Sao Tome
|
|
|---|---|---|
| Life expectancy | 72.5 years | 70.3 years |
| Average age | 29.9 years | 25.2 years |
| Median age | 27.9 years | 20.5 years |
| Male:Female ratio | 49.8:50.2 | 49.7:50.3 |
| Fertility rate | 2.5 births per woman | 3.6 births per woman |
| Population density | 6 ppl/mi² | 661 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/sao-tome-and-principe | 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.