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Population in Mongolia compared to the United Kingdom: Trends, Charts, Rankings

Updated on by Georank

The latest officially reported population of Mongolia was 3,568,978 in 2025 vs 69,487,000 people in the United Kingdom in 2025. In 2026, based on the adjusted UN estimation, the current Mongolia's population is 3,630,744 people compared to 70,071,289 in the United Kingdom.

Population statistics:

  • The United Kingdom's population is 19.3 times bigger than Mongolia's.
  • Mongolia is ranked the 132nd most populous country in the world, while the United Kingdom is the 22nd.
  • The countries together account for 0.89% of the world: 0.04% for Mongolia vs 0.84% for the United Kingdom.
  • For the last 10 years, Mongolia has had an average growth rate of +1.71% per year vs +0.66% in the United Kingdom.
  • Since 2006, the population of Mongolia has increased from 2.57M people to 3.63M (41.4% growth), while the United Kingdom has grown from 60.8M to 70.1M (15.2% growth).

Mongolia vs United Kingdom: population by year and forecast

Mongolia
Factual

Projection
United Kingdom
Factual

Projection
1x
Year Population
Mongolia United Kingdom
2100 5,630,532 74,517,005
2099 5,624,298 74,647,273
2098 5,616,442 74,766,073
2097 5,607,739 74,879,923
2096 5,598,366 74,991,940
2095 5,587,141 75,102,041
2094 5,575,743 75,198,597
2093 5,563,600 75,296,704
2092 5,550,506 75,390,038
2091 5,537,031 75,480,137
2090 5,522,419 75,566,962
2089 5,507,083 75,649,353
2088 5,491,226 75,721,067
2087 5,475,425 75,791,990
2086 5,459,661 75,859,854
2085 5,442,388 75,918,647
2084 5,424,928 75,969,065
2083 5,406,747 76,018,614
2082 5,388,623 76,059,464
2081 5,369,593 76,086,593
2080 5,349,817 76,118,679
2079 5,329,240 76,147,352
2078 5,307,283 76,165,841
2077 5,286,383 76,183,437
2076 5,264,220 76,185,828
2075 5,241,700 76,198,349
2074 5,218,897 76,209,676
2073 5,195,622 76,218,781
2072 5,172,532 76,211,187
2071 5,149,066 76,200,495
2070 5,124,853 76,190,801
2069 5,101,195 76,184,140
2068 5,077,035 76,183,288
2067 5,052,818 76,175,881
2066 5,027,552 76,168,987
2065 5,002,655 76,168,193
2064 4,978,185 76,165,129
2063 4,953,806 76,165,534
2062 4,929,364 76,158,910
2061 4,904,690 76,156,587
2060 4,878,877 76,157,104
2059 4,852,963 76,157,593
2058 4,826,761 76,139,384
2057 4,799,120 76,119,478
2056 4,771,151 76,086,799
2055 4,742,184 76,047,952
2054 4,711,735 75,980,524
2053 4,679,745 75,907,047
2052 4,646,658 75,815,200
2051 4,612,090 75,709,173
2050 4,576,701 75,591,218
2049 4,539,215 75,460,140
2048 4,500,638 75,313,837
2047 4,460,511 75,153,802
2046 4,419,188 74,986,563
2045 4,376,222 74,808,886
2044 4,333,010 74,623,687
2043 4,289,776 74,424,133
2042 4,245,757 74,224,922
2041 4,201,838 74,020,934
2040 4,158,320 73,812,680
2039 4,115,023 73,600,788
2038 4,072,646 73,378,310
2037 4,030,644 73,155,497
2036 3,989,867 72,921,995
2035 3,950,239 72,671,687
2034 3,911,316 72,418,766
2033 3,873,353 72,145,065
2032 3,836,311 71,869,259
2031 3,800,027 71,581,519
2030 3,763,374 71,267,237
2029 3,726,490 70,948,992
2028 3,688,767 70,609,246
2027 3,650,012 70,248,858
2026 3,610,395 69,883,746
2025 3,568,978 69,487,000
2024 3,524,788 69,281,000
2023 3,481,145 68,526,000
2022 3,433,748 67,636,000
2021 3,383,741 66,978,000
2020 3,327,204 66,740,000
2019 3,267,673 66,628,000
2018 3,208,189 66,287,000
2017 3,148,917 65,964,000
2016 3,088,856 65,606,000
2015 3,026,864 65,087,000
2014 2,963,113 64,619,000
2013 2,899,011 64,138,000
2012 2,839,705 63,711,000
2011 2,786,317 63,258,810
2010 2,738,622 62,766,365
2009 2,691,115 62,276,270
2008 2,643,201 61,806,995
2007 2,601,850 61,322,463
2006 2,567,168 60,846,820
2005 2,536,407 60,401,206
2004 2,508,412 59,987,905
2003 2,480,374 59,647,577
2002 2,449,027 59,370,479
2001 2,417,751 59,119,673
2000 2,388,299 58,892,514
1999 2,356,813 58,682,466
1998 2,323,809 58,487,141
1997 2,291,750 58,316,954
1996 2,259,507 58,166,950
1995 2,224,945 58,019,030
1994 2,189,395 57,865,745
1993 2,165,130 57,718,614
1992 2,167,790 57,580,402
1991 2,165,342 57,424,897
1990 2,098,710 57,247,586
1989 2,124,185 57,076,711
1988 2,076,322 56,928,327
1987 2,022,800 56,802,050
1986 1,970,965 56,681,396
1985 1,921,514 56,550,268
1984 1,874,349 56,422,072
1983 1,829,092 56,332,848
1982 1,785,364 56,313,641
1981 1,742,857 56,333,829
1980 1,701,335 56,314,216
1979 1,660,659 56,246,951
1978 1,619,468 56,196,504
1977 1,576,245 56,193,492
1976 1,531,945 56,211,968
1975 1,488,296 56,225,800
1974 1,446,050 56,229,974
1973 1,405,502 56,194,527
1972 1,366,821 56,086,065
1971 1,330,071 55,896,223
1970 1,295,272 55,663,250
1969 1,262,284 55,441,750
1968 1,229,930 55,211,700
1967 1,196,996 54,943,600
1966 1,163,754 54,648,500
1965 1,131,177 54,348,050
1964 1,100,234 54,000,000
1963 1,071,362 53,650,000
1962 1,041,444 53,250,000
1961 1,009,284 52,800,000
1960 977,595 52,400,000

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/united-kingdom | CC BY

From 2006 to 2016, the population of Mongolia increased by 521,688 people (a 20.3% growth), while the United Kingdom gained 4,759,180 people (a 7.82% growth).

For the next 10 years, from 2016 to 2026, Mongolia gained 541,888 people (a 17.5% growth), while the United Kingdom's population increased by 4,465,289 people (a 6.81% growth).

Mongolia was ranked 137th most populous country in 2006 and is 132nd in 2026. The United Kingdom was ranked 21st in 2006 and ranked 22nd 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 the United Kingdom will increase by 7.88% to 75,591,218 people and rank change from 22nd to 26th.

Mongolia is projected to reach its peak in 2100 at 5.63M people compared to the peak of 76.2M people in 2073 for the United Kingdom.

Population growth rate by year

Mongolia
Factual

Projection
United Kingdom
Factual

Projection
1x
Year Growth rate
Mongolia United Kingdom
2100 0.11% -0.17%
2099 0.14% -0.16%
2098 0.16% -0.15%
2097 0.17% -0.15%
2096 0.2% -0.15%
2095 0.2% -0.13%
2094 0.22% -0.13%
2093 0.24% -0.12%
2092 0.24% -0.12%
2091 0.26% -0.11%
2090 0.28% -0.11%
2089 0.29% -0.09%
2088 0.29% -0.09%
2087 0.29% -0.09%
2086 0.32% -0.08%
2085 0.32% -0.07%
2084 0.34% -0.07%
2083 0.34% -0.05%
2082 0.35% -0.04%
2081 0.37% -0.04%
2080 0.39% -0.04%
2079 0.41% -0.02%
2078 0.4% -0.02%
2077 0.42% -0.003%
2076 0.43% -0.02%
2075 0.44% -0.01%
2074 0.45% -0.01%
2073 0.45% 0.01%
2072 0.46% 0.01%
2071 0.47% 0.01%
2070 0.46% 0.009%
2069 0.48% 0.001%
2068 0.48% 0.01%
2067 0.5% 0.009%
2066 0.5% 0.001%
2065 0.49% 0.004%
2064 0.49% -0%
2063 0.5% 0.009%
2062 0.5% 0.003%
2061 0.53% -0.001%
2060 0.53% -0.001%
2059 0.54% 0.02%
2058 0.58% 0.03%
2057 0.59% 0.04%
2056 0.61% 0.05%
2055 0.65% 0.09%
2054 0.68% 0.1%
2053 0.71% 0.12%
2052 0.75% 0.14%
2051 0.77% 0.16%
2050 0.83% 0.17%
2049 0.86% 0.19%
2048 0.9% 0.21%
2047 0.94% 0.22%
2046 0.98% 0.24%
2045 1% 0.25%
2044 1.01% 0.27%
2043 1.04% 0.27%
2042 1.05% 0.28%
2041 1.05% 0.28%
2040 1.05% 0.29%
2039 1.04% 0.3%
2038 1.04% 0.3%
2037 1.02% 0.32%
2036 1% 0.34%
2035 1% 0.35%
2034 0.98% 0.38%
2033 0.97% 0.38%
2032 0.95% 0.4%
2031 0.97% 0.44%
2030 0.99% 0.45%
2029 1.02% 0.48%
2028 1.06% 0.51%
2027 1.1% 0.52%
2026 1.16% 0.57%
2025 1.25% 0.3%
2024 1.25% 1.1%
2023 1.38% 1.32%
2022 1.48% 0.98%
2021 1.7% 0.36%
2020 1.82% 0.17%
2019 1.85% 0.51%
2018 1.88% 0.49%
2017 1.94% 0.55%
2016 2.05% 0.8%
2015 2.15% 0.72%
2014 2.21% 0.75%
2013 2.09% 0.67%
2012 1.92% 0.71%
2011 1.74% 0.78%
2010 1.77% 0.79%
2009 1.81% 0.76%
2008 1.59% 0.79%
2007 1.35% 0.78%
2006 1.21% 0.74%
2005 1.12% 0.69%
2004 1.13% 0.57%
2003 1.28% 0.47%
2002 1.29% 0.42%
2001 1.23% 0.39%
2000 1.34% 0.36%
1999 1.42% 0.33%
1998 1.4% 0.29%
1997 1.43% 0.26%
1996 1.55% 0.25%
1995 1.62% 0.26%
1994 1.12% 0.25%
1993 -0.12% 0.24%
1992 0.11% 0.27%
1991 3.17% 0.31%
1990 -1.2% 0.3%
1989 2.31% 0.26%
1988 2.65% 0.22%
1987 2.63% 0.21%
1986 2.57% 0.23%
1985 2.52% 0.23%
1984 2.47% 0.16%
1983 2.45% 0.03%
1982 2.44% -0.04%
1981 2.44% 0.03%
1980 2.45% 0.12%
1979 2.54% 0.09%
1978 2.74% 0.005%
1977 2.89% -0.03%
1976 2.93% -0.02%
1975 2.92% -0.007%
1974 2.88% 0.06%
1973 2.83% 0.19%
1972 2.76% 0.34%
1971 2.69% 0.42%
1970 2.61% 0.4%
1969 2.63% 0.42%
1968 2.75% 0.49%
1967 2.86% 0.54%
1966 2.88% 0.55%
1965 2.81% 0.64%
1964 2.69% 0.65%
1963 2.87% 0.75%
1962 3.19% 0.85%
1961 3.24% 0.76%

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/united-kingdom | CC BY

In 2025, the population of Mongolia grew by 1.25%, while the United Kingdom's population grew by 0.3%.

Live population counters

Mongolia United Kingdom
Current population
3630744
70071289
Population rank 132/197 22/197
Percent of world population 0.04% 0.84%
One net population change
11.9 minutes
2.56 minutes
One birth every
8.82 minutes
46 seconds
One death every
27.1 minutes
46.9 seconds
Daily growth/decline +121 +564
Annual growth/decline +44,190 +206,000
Annual growth/decline rate +1.25% +0.3%
Population growth rate rank 81/197 145/197
One migration net change every
4.63 days
1.35 minutes
Annual migration change +79 +389,911
Net migration rank 74/196 4/196
Foreign-born residents 22,589 11,845,479
Foreign-born residents rank 169/195 4/195
Foreign-born share of population 0.6% 17.1%
Foreign-born share rank 171/195 36/195

Natural population change vs migration

Mongolia
Natural

Migration
United Kingdom
Natural

Migration
1x
Year Population change
Mongolia United Kingdom
Natural Migration Natural Migration
2025 - 79 - 389,911
2024 40,182 83 13,233 417,114
2023 46,995 0 34,606 445,523
2022 47,730 0 39,770 487,029
2021 52,109 0 30,609 462,967
2020 60,888 0 -4,272 144,221
2019 61,433 8,660 108,338 232,727
2018 60,635 7,811 119,317 259,744
2017 57,940 6,831 145,121 272,311
2016 62,086 5,633 177,136 324,649
2015 64,473 4,307 175,735 347,839
2014 66,078 2,921 206,781 306,091
2013 62,618 1,505 198,827 237,272
2012 55,942 351 248,473 172,088
2011 50,711 -505 259,361 228,773
2010 44,914 -6,444 251,066 274,811
2009 48,876 -15,007 230,422 249,639
2008 45,843 -17,277 216,325 263,390
2007 39,636 -15,220 196,232 309,385
2006 33,609 -11,934 176,455 288,923
2005 29,290 -8,924 144,963 308,279
2004 28,418 -8,148 131,974 276,077
2003 28,827 -7,986 89,471 211,846
2002 30,439 -8,934 65,308 203,577
2001 32,052 -10,244 65,032 175,133
2000 32,753 -11,241 70,671 153,917
1999 32,283 -13,481 64,551 152,653
1998 31,757 -10,315 87,730 125,541
1997 32,403 -9,132 99,138 59,723
1996 33,741 -8,626 98,884 54,964
1995 34,473 -7,346 87,028 61,385
1994 34,711 -5,449 127,304 45,339
1993 36,924 -5,429 103,893 27,403
1992 42,437 -8,404 149,709 17,846
1991 47,884 -11,427 143,562 27,601
1990 49,443 -11,881 154,569 57,132
1989 51,420 -9,757 119,861 49,586
1988 51,588 2,459 136,628 13,952
1987 51,140 1,855 136,325 8,266
1986 50,329 354 90,690 41,836
1985 49,944 -1,719 79,170 83,164
1984 48,562 -2,452 84,633 71,107
1983 46,919 -2,522 61,966 27,063
1982 45,179 -2,132 56,314 -61,152
1981 43,588 -1,615 73,234 -83,876
1980 42,343 -1,268 95,734 -25,187
1979 41,568 -1,296 61,872 11,255
1978 40,276 1,833 16,859 3,783
1977 38,995 5,354 0 -21,636
1976 37,670 6,577 -5,621 -19,135
1975 36,490 6,556 33,735 -40,241
1974 35,297 6,153 67,476 -65,710
1973 33,993 5,647 112,389 -33,840
1972 32,727 4,999 162,650 -1,406
1971 31,536 4,238 257,123 1,175
1970 30,558 3,263 244,918 -15,254
1969 29,781 2,366 260,577 -60,655
1968 29,017 3,535 292,622 -38,852
1967 28,178 5,139 346,145 -39,659
1966 27,338 5,837 333,356 -27,935
1965 26,364 5,610 364,132 -24,955
1964 25,317 4,599 405,000 -23,885
1963 24,142 3,687 337,995 8,271
1962 22,960 9,049 340,800 76,443
1961 21,873 10,440 311,519 52,295
1960 20,726 10,334 314,400 19,953

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

GeoRank.org/population/mongolia/united-kingdom | 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 the United Kingdom 19.8% is from natural causes (a gain of 839,593 people) and 80.2% is from migration (a gain of 3,394,124 people).

As of 2024, 22,589 residents or 0.6% of the population were not native-born in Mongolia, compared to 11,845,479 people or 17.1% in the United Kingdom.

Biggest cities by population

Mongolia
City Population
Ulaanbaatar 1.4M
Bulgan 12.3K
United Kingdom
City Population
London 8.8M
Birmingham 1.14M
Glasgow 626K
Manchester 548K
Leeds 536K
Sheffield 518K
Liverpool 513K
Edinburgh 488K
Bristol 472K
Cardiff 384K

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/united-kingdom | 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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