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Population in Mongolia compared to Nigeria: Trends, Charts, Rankings

Updated on by Georank

The latest officially reported population of Mongolia was 3,568,978 in 2025 vs 237,527,782 people in Nigeria in 2025. In 2026, based on the adjusted UN estimation, the current Mongolia's population is 3,630,744 people compared to 245,016,045 in Nigeria.

Population statistics:

  • Nigeria's population is 67.5 times bigger than Mongolia's.
  • Mongolia is ranked the 132nd most populous country in the world, while Nigeria is the 6th.
  • The countries together account for 2.99% of the world: 0.04% for Mongolia vs 2.95% for Nigeria.
  • For the last 10 years, Mongolia has had an average growth rate of +1.71% per year vs +2.25% in Nigeria.
  • Since 2006, the population of Mongolia has increased from 2.57M people to 3.63M (41.4% growth), while Nigeria has grown from 149M to 245M (64.4% growth).

Mongolia vs Nigeria: population by year and forecast

Mongolia
Factual

Projection
Nigeria
Factual

Projection
1x
Year Population
Mongolia Nigeria
2100 5,630,532 481,640,156
2099 5,624,298 481,456,918
2098 5,616,442 481,181,892
2097 5,607,739 480,838,161
2096 5,598,366 480,422,467
2095 5,587,141 479,938,579
2094 5,575,743 479,395,022
2093 5,563,600 478,769,369
2092 5,550,506 478,059,864
2091 5,537,031 477,236,907
2090 5,522,419 476,329,495
2089 5,507,083 475,326,347
2088 5,491,226 474,231,442
2087 5,475,425 473,035,563
2086 5,459,661 471,732,001
2085 5,442,388 470,328,175
2084 5,424,928 468,806,172
2083 5,406,747 467,187,453
2082 5,388,623 465,472,417
2081 5,369,593 463,643,190
2080 5,349,817 461,705,493
2079 5,329,240 459,644,523
2078 5,307,283 457,477,264
2077 5,286,383 455,218,871
2076 5,264,220 452,849,991
2075 5,241,700 450,367,356
2074 5,218,897 447,789,885
2073 5,195,622 445,117,028
2072 5,172,532 442,340,440
2071 5,149,066 439,464,323
2070 5,124,853 436,505,329
2069 5,101,195 433,437,998
2068 5,077,035 430,286,232
2067 5,052,818 427,032,499
2066 5,027,552 423,702,640
2065 5,002,655 420,285,359
2064 4,978,185 416,778,394
2063 4,953,806 413,198,800
2062 4,929,364 409,551,159
2061 4,904,690 405,827,482
2060 4,878,877 402,041,765
2059 4,852,963 398,197,311
2058 4,826,761 394,284,767
2057 4,799,120 390,311,065
2056 4,771,151 386,267,580
2055 4,742,184 382,162,992
2054 4,711,735 378,000,511
2053 4,679,745 373,769,779
2052 4,646,658 369,472,476
2051 4,612,090 365,120,741
2050 4,576,701 360,706,317
2049 4,539,215 356,243,287
2048 4,500,638 351,724,743
2047 4,460,511 347,142,279
2046 4,419,188 342,505,549
2045 4,376,222 337,807,869
2044 4,333,010 333,050,132
2043 4,289,776 328,230,652
2042 4,245,757 323,363,366
2041 4,201,838 318,443,989
2040 4,158,320 313,468,061
2039 4,115,023 308,450,008
2038 4,072,646 303,399,842
2037 4,030,644 298,327,800
2036 3,989,867 293,227,654
2035 3,950,239 288,115,630
2034 3,911,316 282,995,818
2033 3,873,353 277,875,880
2032 3,836,311 272,747,599
2031 3,800,027 267,645,657
2030 3,763,374 262,562,767
2029 3,726,490 257,484,616
2028 3,688,767 252,445,821
2027 3,650,012 247,437,680
2026 3,610,395 242,458,365
2025 3,568,978 237,527,782
2024 3,524,788 232,679,478
2023 3,481,145 227,882,945
2022 3,433,748 223,150,896
2021 3,383,741 218,529,286
2020 3,327,204 213,996,181
2019 3,267,673 209,485,641
2018 3,208,189 204,938,755
2017 3,148,917 200,254,579
2016 3,088,856 195,443,700
2015 3,026,864 190,671,878
2014 2,963,113 185,896,915
2013 2,899,011 181,049,443
2012 2,839,705 176,200,625
2011 2,786,317 171,379,598
2010 2,738,622 166,642,886
2009 2,691,115 162,049,464
2008 2,643,201 157,595,014
2007 2,601,850 153,267,261
2006 2,567,168 149,077,334
2005 2,536,407 145,017,253
2004 2,508,412 141,057,045
2003 2,480,374 137,202,644
2002 2,449,027 133,471,989
2001 2,417,751 129,862,595
2000 2,388,299 126,382,494
1999 2,356,813 123,047,320
1998 2,323,809 119,846,254
1997 2,291,750 116,754,792
1996 2,259,507 113,754,779
1995 2,224,945 110,819,428
1994 2,189,395 107,935,714
1993 2,165,130 105,122,069
1992 2,167,790 102,372,770
1991 2,165,342 99,720,162
1990 2,098,710 97,120,925
1989 2,124,185 94,531,014
1988 2,076,322 92,020,090
1987 2,022,800 89,591,716
1986 1,970,965 87,235,953
1985 1,921,514 84,897,973
1984 1,874,349 82,526,443
1983 1,829,092 80,438,260
1982 1,785,364 78,378,701
1981 1,742,857 76,068,103
1980 1,701,335 73,764,641
1979 1,660,659 71,498,242
1978 1,619,468 69,326,532
1977 1,576,245 67,234,590
1976 1,531,945 65,258,009
1975 1,488,296 63,410,815
1974 1,446,050 61,679,144
1973 1,405,502 60,082,139
1972 1,366,821 58,601,748
1971 1,330,071 57,214,684
1970 1,295,272 55,893,838
1969 1,262,284 54,631,914
1968 1,229,930 53,432,783
1967 1,196,996 52,293,065
1966 1,163,754 51,188,234
1965 1,131,177 50,086,764
1964 1,100,234 49,012,016
1963 1,071,362 47,973,575
1962 1,041,444 46,965,292
1961 1,009,284 45,989,310
1960 977,595 45,053,782

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/nigeria | CC BY

From 2006 to 2016, the population of Mongolia increased by 521,688 people (a 20.3% growth), while Nigeria gained 46,366,366 people (a 31.1% growth).

For the next 10 years, from 2016 to 2026, Mongolia gained 541,888 people (a 17.5% growth), while Nigeria's population increased by 49,572,345 people (a 25.4% growth).

Mongolia was ranked 137th most populous country in 2006 and is 132nd in 2026. Nigeria was ranked 7th in 2006 and ranked 6th 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 Nigeria will increase by 47.2% to 360,706,317 people and rank change from 6th to 5th.

Mongolia is projected to reach its peak in 2100 at 5.63M people compared to the peak of 482M people in 2100 for Nigeria.

Population growth rate by year

Mongolia
Factual

Projection
Nigeria
Factual

Projection
1x
Year Growth rate
Mongolia Nigeria
2100 0.11% 0.04%
2099 0.14% 0.06%
2098 0.16% 0.07%
2097 0.17% 0.09%
2096 0.2% 0.1%
2095 0.2% 0.11%
2094 0.22% 0.13%
2093 0.24% 0.15%
2092 0.24% 0.17%
2091 0.26% 0.19%
2090 0.28% 0.21%
2089 0.29% 0.23%
2088 0.29% 0.25%
2087 0.29% 0.28%
2086 0.32% 0.3%
2085 0.32% 0.32%
2084 0.34% 0.35%
2083 0.34% 0.37%
2082 0.35% 0.39%
2081 0.37% 0.42%
2080 0.39% 0.45%
2079 0.41% 0.47%
2078 0.4% 0.5%
2077 0.42% 0.52%
2076 0.43% 0.55%
2075 0.44% 0.58%
2074 0.45% 0.6%
2073 0.45% 0.63%
2072 0.46% 0.65%
2071 0.47% 0.68%
2070 0.46% 0.71%
2069 0.48% 0.73%
2068 0.48% 0.76%
2067 0.5% 0.79%
2066 0.5% 0.81%
2065 0.49% 0.84%
2064 0.49% 0.87%
2063 0.5% 0.89%
2062 0.5% 0.92%
2061 0.53% 0.94%
2060 0.53% 0.97%
2059 0.54% 0.99%
2058 0.58% 1.02%
2057 0.59% 1.05%
2056 0.61% 1.07%
2055 0.65% 1.1%
2054 0.68% 1.13%
2053 0.71% 1.16%
2052 0.75% 1.19%
2051 0.77% 1.22%
2050 0.83% 1.25%
2049 0.86% 1.28%
2048 0.9% 1.32%
2047 0.94% 1.35%
2046 0.98% 1.39%
2045 1% 1.43%
2044 1.01% 1.47%
2043 1.04% 1.51%
2042 1.05% 1.54%
2041 1.05% 1.59%
2040 1.05% 1.63%
2039 1.04% 1.66%
2038 1.04% 1.7%
2037 1.02% 1.74%
2036 1% 1.77%
2035 1% 1.81%
2034 0.98% 1.84%
2033 0.97% 1.88%
2032 0.95% 1.91%
2031 0.97% 1.94%
2030 0.99% 1.97%
2029 1.02% 2%
2028 1.06% 2.02%
2027 1.1% 2.05%
2026 1.16% 2.08%
2025 1.25% 2.08%
2024 1.25% 2.1%
2023 1.38% 2.12%
2022 1.48% 2.11%
2021 1.7% 2.12%
2020 1.82% 2.15%
2019 1.85% 2.22%
2018 1.88% 2.34%
2017 1.94% 2.46%
2016 2.05% 2.5%
2015 2.15% 2.57%
2014 2.21% 2.68%
2013 2.09% 2.75%
2012 1.92% 2.81%
2011 1.74% 2.84%
2010 1.77% 2.83%
2009 1.81% 2.83%
2008 1.59% 2.82%
2007 1.35% 2.81%
2006 1.21% 2.8%
2005 1.12% 2.81%
2004 1.13% 2.81%
2003 1.28% 2.8%
2002 1.29% 2.78%
2001 1.23% 2.75%
2000 1.34% 2.71%
1999 1.42% 2.67%
1998 1.4% 2.65%
1997 1.43% 2.64%
1996 1.55% 2.65%
1995 1.62% 2.67%
1994 1.12% 2.68%
1993 -0.12% 2.69%
1992 0.11% 2.66%
1991 3.17% 2.68%
1990 -1.2% 2.74%
1989 2.31% 2.73%
1988 2.65% 2.71%
1987 2.63% 2.7%
1986 2.57% 2.75%
1985 2.52% 2.87%
1984 2.47% 2.6%
1983 2.45% 2.63%
1982 2.44% 3.04%
1981 2.44% 3.12%
1980 2.45% 3.17%
1979 2.54% 3.13%
1978 2.74% 3.11%
1977 2.89% 3.03%
1976 2.93% 2.91%
1975 2.92% 2.81%
1974 2.88% 2.66%
1973 2.83% 2.53%
1972 2.76% 2.42%
1971 2.69% 2.36%
1970 2.61% 2.31%
1969 2.63% 2.24%
1968 2.75% 2.18%
1967 2.86% 2.16%
1966 2.88% 2.2%
1965 2.81% 2.19%
1964 2.69% 2.16%
1963 2.87% 2.15%
1962 3.19% 2.12%
1961 3.24% 2.08%

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/nigeria | CC BY

In 2025, the population of Mongolia grew by 1.25%, while Nigeria's population grew by 2.08%.

Live population counters

Mongolia Nigeria
Current population
3630744
245016045
Population rank 132/197 6/197
Percent of world population 0.04% 2.95%
One net population change
11.9 minutes
6.52 seconds
One birth every
8.82 minutes
4.17 seconds
One death every
27.1 minutes
11.6 seconds
Daily growth/decline +121 +13,283
Annual growth/decline +44,190 +4,848,304
Annual growth/decline rate +1.25% +2.08%
Population growth rate rank 81/197 45/197
One migration net change every
4.63 days
34.5 minutes
Annual migration change +79 -15,258
Net migration rank 74/196 145/196
Foreign-born residents 22,589 1,403,281
Foreign-born residents rank 169/195 49/195
Foreign-born share of population 0.6% 0.6%
Foreign-born share rank 171/195 173/195

Natural population change vs migration

Mongolia
Natural

Migration
Nigeria
Natural

Migration
1x
Year Population change
Mongolia Nigeria
Natural Migration Natural Migration
2025 - 79 - -15,258
2024 40,182 83 4,851,833 -35,202
2023 46,995 0 4,834,309 -57,936
2022 47,730 0 4,739,502 -51,680
2021 52,109 0 4,641,562 -86,115
2020 60,888 0 4,525,164 -14,497
2019 61,433 8,660 4,609,941 -99,722
2018 60,635 7,811 4,659,898 -76,565
2017 57,940 6,831 4,706,183 78,685
2016 62,086 5,633 4,761,594 75,265
2015 64,473 4,307 4,823,045 -116,162
2014 66,078 2,921 4,862,319 -19,376
2013 62,618 1,505 4,811,751 40,201
2012 55,942 351 4,774,508 71,138
2011 50,711 -505 4,728,363 67,808
2010 44,914 -6,444 4,629,173 47,966
2009 48,876 -15,007 4,528,149 -18,422
2008 45,843 -17,277 4,412,976 -13,646
2007 39,636 -15,220 4,265,428 -9,162
2006 33,609 -11,934 4,135,703 -12,093
2005 29,290 -8,924 4,013,788 -17,146
2004 28,418 -8,148 3,877,376 46,370
2003 28,827 -7,986 3,751,120 33,857
2002 30,439 -8,934 3,606,814 69,594
2001 32,052 -10,244 3,478,370 64,163
2000 32,753 -11,241 3,343,196 74,535
1999 32,283 -13,481 3,155,425 97,195
1998 31,757 -10,315 3,003,946 145,575
1997 32,403 -9,132 2,936,500 96,885
1996 33,741 -8,626 2,882,205 84,448
1995 34,473 -7,346 2,830,771 73,243
1994 34,711 -5,449 2,735,198 128,134
1993 36,924 -5,429 2,673,675 90,200
1992 42,437 -8,404 2,596,173 138,412
1991 47,884 -11,427 2,527,807 42,760
1990 49,443 -11,881 2,491,928 135,959
1989 51,420 -9,757 2,452,324 99,588
1988 51,588 2,459 2,376,419 93,510
1987 51,140 1,855 2,322,397 64,418
1986 50,329 354 2,295,003 29,682
1985 49,944 -1,719 2,289,784 61,514
1984 48,562 -2,452 2,278,060 113,758
1983 46,919 -2,522 2,292,089 -507,539
1982 45,179 -2,132 2,233,401 101,116
1981 43,588 -1,615 2,179,884 106,723
1980 42,343 -1,268 2,121,618 198,672
1979 41,568 -1,296 2,074,807 137,721
1978 40,276 1,833 2,019,621 111,258
1977 38,995 5,354 1,923,917 129,075
1976 37,670 6,577 1,827,289 72,889
1975 36,490 6,556 1,718,623 75,603
1974 35,297 6,153 1,624,813 44,281
1973 33,993 5,647 1,525,485 -618
1972 32,727 4,999 1,448,928 -12,962
1971 31,536 4,238 1,373,896 -35,639
1970 30,558 3,263 1,295,507 7,953
1969 29,781 2,366 1,213,484 6,912
1968 29,017 3,535 1,168,254 9,615
1967 28,178 5,139 1,082,884 18,683
1966 27,338 5,837 1,095,582 12,513
1965 26,364 5,610 1,061,840 32,988
1964 25,317 4,599 1,028,272 26,411
1963 24,142 3,687 995,116 27,115
1962 22,960 9,049 966,452 27,906
1961 21,873 10,440 932,111 25,515
1960 20,726 10,334 901,301 12,131

Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).

GeoRank.org/population/mongolia/nigeria | 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 Nigeria 99.2% is from natural causes (a gain of 47,153,031 people) and 0.81% is from migration (a loss of 383,929 people).

As of 2024, 22,589 residents or 0.6% of the population were not native-born in Mongolia, compared to 1,403,281 people or 0.6% in Nigeria.

Biggest cities by population

Mongolia
City Population
Ulaanbaatar 1.4M
Bulgan 12.3K
Nigeria
City Population
Lagos 15.1M
Kano 4.35M
Port Harcourt 3.32M
Ibadan 2.56M
Benin 1.78M
Abuja 1.69M
Onitsha 1.48M
Aba 1.16M
Enugu 1.03M
Owerri 908K

Compare countries by 7 more topics

Population map with other countries

1x

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/nigeria | CC BY

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Data sources:

  1. World Bank | Health (1960–2025, retrieved 2026-07-08)
  2. United Nations | World Population Prospects (1960–2100, retrieved 2026-07-08)
  3. U.S. Census Bureau (1960–2025, retrieved 2026-07-08)
  4. Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08)
  5. Wikidata (2026, retrieved 2026-07-08)

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