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Mongolia vs Sierra Leone statistics compared

Updated on by Georank team

Mongolia has a population of 3.52M (ranked 132/197), compared with 8.64M in Sierra Leone (ranked 102/197). Mongolia's land area is 601,740 sq mi versus 27,869 sq mi for Sierra Leone (ranked 18th vs. 116th).

By GDP, Mongolia ranks 121/197 ($23.8B) and Sierra Leone ranks 160/197 ($6.97B). By GDP per capita, Mongolia ranks 105/197 ($6,751), while Sierra Leone ranks 186/197 ($807).

Main facts and rankings

Mongolia Sierra Leone
Population
3620317
9049533
Population rank 132/197 101/197
GDP
$23.8B
2024
$6.97B
2024
GDP rank 121/197 160/197
GDP per capita
$6,751
2024
$807
2024
GDP per capita rank 105/197 186/197
GDP per capita, PPP
$19,145
2024
$3,522
2024
Government debt
$10.5B
2024
$2.91B
2024
Debt-to-GDP ratio
44.1%
2024
41.7%
2024
Government debt per person
$2,974
2024
$337
2024
Government debt per person rank 101/185 174/185
Average annual personal income after taxes
$5,311
2026
$2,915
2026
Land area 601,740 sq mi 27,869 sq mi
Population density
6 ppl/mi²
2026
323 ppl/mi²
2026
Fertility rate
2.7
2023
3.79
2023
Median age
27.8 years
2024
20.5 years
2024
Life expectancy
72.5 years
2026
62.3 years
2026

Mongolia and Sierra Leone: Comparison Charts

Mongolia and Sierra Leone economies compared

GDP
Mongolia

Sierra Leone
1x
Year GDP
Mongolia Sierra Leone
2024 $23,794,540,025 $6,971,127,235
2023 $20,325,121,394 $6,415,852,767
2022 $17,146,471,714 $7,121,125,278
2021 $15,286,441,738 $7,166,931,485
2020 $13,312,981,429 $6,688,307,703
2019 $14,206,359,018 $6,523,577,594
2018 $13,178,094,720 $6,390,514,689
2017 $11,480,847,741 $5,749,846,528
2016 $11,181,350,649 $6,084,297,211
2015 $11,619,892,591 $6,788,352,975
2014 $12,226,514,668 $7,686,138,791
2013 $12,582,122,604 $7,502,762,863
2012 $12,292,770,632 $6,141,666,509
2011 $10,409,797,378 $4,861,632,885
2010 $7,189,481,999 $4,262,805,967
2009 $4,583,850,368 $3,953,403,098
2008 $5,623,216,608 $4,157,895,298
2007 $4,234,999,704 $3,632,957,611
2006 $3,414,055,662 $3,263,697,467
2005 $2,523,471,601 $2,545,275,313
2004 $1,992,066,808 $2,237,350,687
2003 $1,595,297,356 $2,142,618,046
2002 $1,396,555,720 $1,933,863,911
2001 $1,267,997,934 $1,681,473,894
2000 $1,136,896,124 $635,866,404
1999 $1,057,408,589 $669,386,624
1998 $1,124,440,205 $672,368,187
1997 $1,180,934,203 $850,232,760
1996 $1,345,719,472 $941,709,423
1995 $1,452,165,005 $870,740,292
1994 $925,817,092 $911,853,802
1993 $768,401,634 $768,867,883
1992 $1,317,611,864 $679,940,814
1991 $2,379,018,326 $779,981,987
1990 $2,560,785,660 $649,644,098
1989 $3,576,966,800 $932,974,420
1988 $3,204,461,567 $1,055,083,933
1987 $3,020,611,600 $660,106,336
1986 $2,896,178,867 $490,181,457
1985 $2,186,505,475 $856,890,459
1984 $2,098,734,600 $1,087,471,862
1983 $2,725,736,633 $995,104,305
1982 $2,552,401,933 $1,295,361,886
1981 $2,310,099,100 $1,114,830,472
1980 $2,101,394,100 $1,100,685,845
1979 - $1,109,374,911
1978 - $960,728,339
1977 - $691,777,584
1976 - $594,895,942
1975 - $679,336,344
1974 - $648,590,643
1973 - $575,230,724
1972 - $465,381,340
1971 - $419,549,305
1970 - $434,410,974
1969 - $408,690,163
1968 - $329,859,732
1967 - $348,795,303
1966 - $375,479,850
1965 - $359,379,856
1964 - $371,847,461
1963 - $348,547,279
1962 - $342,721,416
1961 - $327,834,191
1960 - $322,009,962

Data sources: World Bank | Economy & Growth (1960–2024, retrieved 2026-04-06).

GeoRank.org/facts/mongolia/sierra-leone | CC BY

Mongolia and Sierra Leone economies compared

GDP per capita
Mongolia

Sierra Leone
1x
Year GDP per capita
Mongolia Sierra Leone
2024 $6,751 $807
2023 $5,839 $758
2022 $4,994 $860
2021 $4,518 $885
2020 $4,001 $845
2019 $4,348 $844
2018 $4,108 $846
2017 $3,646 $779
2016 $3,620 $844
2015 $3,839 $965
2014 $4,126 $1,118
2013 $4,340 $1,117
2012 $4,329 $938
2011 $3,736 $761
2010 $2,625 $685
2009 $1,703 $653
2008 $2,127 $705
2007 $1,628 $632
2006 $1,330 $580
2005 $995 $463
2004 $794 $418
2003 $643 $414
2002 $570 $389
2001 $524 $358
2000 $476 $143.7
1999 $449 $155
1998 $484 $156.5
1997 $515 $199.9
1996 $596 $224.3
1995 $653 $208.4
1994 $423 $218.5
1993 $355 $185
1992 $608 $163.2
1991 $1,099 $183.7
1990 $1,220 $154.8
1989 $1,684 $231.3
1988 $1,543 $268.2
1987 $1,493 $172.4
1986 $1,469 $131.5
1985 $1,138 $235.5
1984 $1,120 $306
1983 $1,490 $285.8
1982 $1,430 $380
1981 $1,325 $334
1980 $1,235 $336
1979 - $346
1978 - $305
1977 - $224.2
1976 - $196.4
1975 - $228.4
1974 - $222.1
1973 - $200.6
1972 - $165.4
1971 - $151.8
1970 - $160.2
1969 - $153.6
1968 - $126.3
1967 - $136.1
1966 - $149.3
1965 - $145.6
1964 - $153.4
1963 - $146.3
1962 - $146.3
1961 - $142.3
1960 - $142

Data sources: World Bank | Economy & Growth (1960–2024, retrieved 2026-04-06).

GeoRank.org/facts/mongolia/sierra-leone | CC BY

Mongolia vs. Sierra Leone life expectancy calculator

Life expectancy
Mongolia

Sierra Leone
1x
Year Life expectancy, years
Mongolia Sierra Leone
2026 72.5 62.3
2025 72.2 62.2
2024 72 62
2023 71.7 61.8
2022 71.5 61.3
2021 68.6 60.3
2020 70 59.7
2019 70.7 59.6
2018 70.6 59.1
2017 70.2 57.8
2016 69.7 56.9
2015 69.2 55.5
2014 68.7 54.3
2013 68.2 54.1
2012 67.6 53.2
2011 67.2 52.6
2010 67.1 51.9
2009 67.2 51.3
2008 67.1 50.7
2007 66.5 50
2006 65.6 49.5
2005 64.8 48.3
2004 64.3 47.5
2003 64.1 46.8
2002 64 46.2
2001 63.8 45.4
2000 63.5 44.8
1999 62.8 42
1998 62.1 42.7
1997 61.4 43.6
1996 61 43.5
1995 60.9 42.6
1994 60.9 42.8
1993 60.8 43.4
1992 60.4 43.5
1991 59.8 43.3
1990 58.8 43.7
1989 58.1 43.7
1988 57.5 43.8
1987 57.1 43.7
1986 56.8 43.5
1985 56.4 43.6
1984 56.1 43.6
1983 55.9 43.5
1982 55.6 43.3
1981 55.4 43.1
1980 55.2 42.8
1979 55.1 42.5
1978 54.9 42.2
1977 54.8 41.8
1976 54.6 41.4
1975 54.3 41
1974 54 40.4
1973 53.6 40
1972 53.1 39.5
1971 52.6 39.1
1970 52 38.6
1969 51.4 38.2
1968 50.8 37.8
1967 50.1 37.3
1966 49.4 36.6
1965 48.7 35.9
1964 47.9 35.3
1963 47.1 34.7
1962 46.3 34.2
1961 45.4 33.6
1960 44.5 33.1
1959 43.7 32.6
1958 42.8 32.1
1957 40.4 31.8
1956 41.4 31.3
1955 40.7 30.9
1954 40.2 30.5
1953 39.8 30.1
1952 39.4 29.7
1951 39.1 29.3
1950 38.6 28.9

Data sources: United Nations | World Population Prospects (1950–2026, retrieved 2026-03-10).

GeoRank.org/facts/mongolia/sierra-leone | CC BY

Mongolia and Sierra Leone population clocks and comparison

Population
Mongolia

Sierra Leone
1x
Year Population
Mongolia Sierra Leone
2024 3,524,788 8,642,022
2023 3,481,145 8,460,512
2022 3,433,748 8,276,807
2021 3,383,741 8,094,602
2020 3,327,204 7,912,558
2019 3,267,673 7,731,991
2018 3,208,189 7,554,563
2017 3,148,917 7,379,299
2016 3,088,856 7,205,328
2015 3,026,864 7,037,655
2014 2,963,113 6,876,385
2013 2,899,011 6,714,051
2012 2,839,705 6,551,080
2011 2,786,317 6,387,251
2010 2,738,622 6,222,714
2009 2,691,115 6,055,646
2008 2,643,201 5,894,722
2007 2,601,850 5,749,352
2006 2,567,168 5,624,466
2005 2,536,407 5,501,712
2004 2,508,412 5,355,717
2003 2,480,374 5,177,687
2002 2,449,027 4,971,435
2001 2,417,751 4,692,716
2000 2,388,299 4,423,611
1999 2,356,813 4,318,043
1998 2,323,809 4,295,785
1997 2,291,750 4,253,716
1996 2,259,507 4,199,210
1995 2,224,945 4,179,179
1994 2,189,395 4,173,105
1993 2,165,130 4,157,130
1992 2,167,790 4,166,366
1991 2,165,342 4,246,267
1990 2,098,710 4,196,828
1989 2,124,185 4,034,037
1988 2,076,322 3,934,517
1987 2,022,800 3,829,718
1986 1,970,965 3,728,380
1985 1,921,514 3,638,438
1984 1,874,349 3,558,758
1983 1,829,092 3,481,646
1982 1,785,364 3,408,183
1981 1,742,857 3,338,940
1980 1,701,335 3,272,089
1979 1,660,659 3,207,499
1978 1,619,468 3,145,517
1977 1,576,245 3,085,354
1976 1,531,945 3,028,820
1975 1,488,296 2,974,657
1974 1,446,050 2,920,459
1973 1,405,502 2,866,955
1972 1,366,821 2,814,388
1971 1,330,071 2,763,222
1970 1,295,272 2,712,286
1969 1,262,284 2,661,365
1968 1,229,930 2,611,532
1967 1,196,996 2,562,384
1966 1,163,754 2,514,638
1965 1,131,177 2,468,666
1964 1,100,234 2,424,390
1963 1,071,362 2,382,258
1962 1,041,444 2,342,242
1961 1,009,284 2,304,227
1960 977,595 2,268,356

Data sources: World Bank | Health (1960–2024, retrieved 2026-04-06).

GeoRank.org/facts/mongolia/sierra-leone | CC BY

Fertility rates in Mongolia and Sierra Leone

Fertility rate
Mongolia

Sierra Leone
1x
Year Fertility rate
Mongolia Sierra Leone
2023 2.7 3.79
2022 2.7 3.88
2021 2.8 3.98
2020 2.9 4.08
2019 3 4.19
2018 2.9 4.29
2017 2.8 4.39
2016 3 4.47
2015 3 4.55
2014 3.1 4.7
2013 3 4.87
2012 2.7 5.06
2011 2.6 5.21
2010 2.4 5.33
2009 2.8 5.45
2008 2.6 5.56
2007 2.3 5.64
2006 2.1 5.74
2005 2 5.81
2004 2 5.92
2003 2 6.09
2002 2.1 6.23
2001 2.2 6.31
2000 2.2 6.36
1999 2.3 6.42
1998 2.3 6.5
1997 2.4 6.53
1996 2.5 6.55
1995 2.77 6.56
1994 2.7 6.56
1993 2.5 6.57
1992 3.5 6.56
1991 4 6.55
1990 4.5 6.57
1989 4.42 6.57
1988 4.65 6.59
1987 4.83 6.61
1986 5.03 6.6
1985 5.26 6.59
1984 5.45 6.59
1983 5.63 6.57
1982 5.8 6.56
1981 5.98 6.55
1980 6.21 6.56
1979 6.42 6.58
1978 6.62 6.59
1977 6.79 6.57
1976 6.93 6.55
1975 7.07 6.55
1974 7.17 6.53
1973 7.24 6.47
1972 7.28 6.45
1971 7.3 6.43
1970 7.31 6.41
1969 7.34 6.39
1968 7.37 6.39
1967 7.39 6.38
1966 7.41 6.35
1965 7.38 6.31
1964 7.33 6.29
1963 7.24 6.26
1962 7.1 6.22
1961 6.96 6.21
1960 6.82 6.18

Data sources: World Bank | Health (1960–2023, retrieved 2026-04-06).

GeoRank.org/facts/mongolia/sierra-leone | CC BY

Mongolia and Sierra Leone demographics compared

Median age
Mongolia

Sierra Leone
1x
Year Median age, years
Mongolia Sierra Leone
2024 27.8 20.5
2023 27.7 20.3
2022 27.6 20
2021 27.4 19.8
2020 27.3 19.6
2019 27.2 19.4
2018 27.1 19.2
2017 27 19.1
2016 26.9 18.9
2015 26.7 18.7
2014 26.5 18.6
2013 26.3 18.5
2012 26.1 18.4
2011 25.8 18.3
2010 25.4 18.2
2009 25.1 18.1
2008 24.8 18.1
2007 24.5 18
2006 24.2 18
2005 23.8 18
2004 23.4 17.9
2003 23 17.9
2002 22.6 17.9
2001 22.2 18
2000 21.8 18
1999 21.4 18
1998 21 18.1
1997 20.7 18.1
1996 20.4 18.2
1995 20 18.2
1994 19.8 18.3
1993 19.5 18.4
1992 19.3 18.4
1991 19.1 18.5
1990 19 18.5
1989 18.8 18.6
1988 18.7 18.6
1987 18.7 18.7
1986 18.6 18.7
1985 18.5 18.8
1984 18.4 18.9
1983 18.2 18.9
1982 18 19
1981 17.9 19.1
1980 17.7 19.1
1979 17.5 19.2
1978 17.4 19.3
1977 17.3 19.4
1976 17.2 19.5
1975 17.2 19.6
1974 17.2 19.8
1973 17.2 19.9
1972 17.3 20.1
1971 17.5 20.2
1970 17.7 20.4
1969 18 20.6
1968 18.4 20.7
1967 19 20.8
1966 19.6 20.9
1965 20.3 20.9
1964 21 21
1963 21.7 21
1962 22.2 21.1
1961 22.5 21.1
1960 22.8 21.1

Data sources: World Bank | Health (1960–2024, retrieved 2026-04-06).

GeoRank.org/facts/mongolia/sierra-leone | CC BY

Interactive Maps

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National statistics comparison

Finance

Mongolia Sierra Leone
GNI, Atlas method
$19B
2024
$7.08B
2024
Government expenditure, % of GDP
37.5%
2024
15.6%
2024
Education expenditure, % of GDP
3.66%
2023
2.62%
2023
Military expenditure, % of GDP
0.74%
2024
0.46%
2024
Armed forces personnel
18,000
2020
9,000
2020
Deficit/surplus, % of GDP
+1.39%
2024
-4.53%
2024
Unemployment rate
5.81%
2024
3.19%
2018
Services, % of GDP
44.3%
2024
42.6%
2024
Industry, % of GDP
38.1%
2024
25.6%
2024
Economic freedom index
63.9
2026
49.6
2026
Income share by richest 10%
24.6%
2022
29.4%
2018
Income share by poorest 10%
3.4%
2022
3.4%
2018
Total reserves including gold
$5.51B
2024
$433M
2024
Personal remittances received
$528M
2024
$321M
2024
International tourist arrivals
66,900
2020
71,000
2019
International tourism as share of exports
0.64%
2020
5.49%
2018
Banked people share
98.3%
2024
38.6%
2024

Energy

Mongolia Sierra Leone
Energy use, kg of oil equivalent per capita
1,891 kg
2022
n/a
GDP PPP per kg equivalent of energy use
$8.68
2022
n/a
Carbon dioxide (CO2) emissions
27.7 megatons
2024
1.46 megatons
2024
CO2 emissions per capita
7.85 tons
2024
0.17 tons
2024
Fossil fuel energy use share
94.7%
2022
n/a
Renewable energy use share
3%
2021
71.6%
2022
Alternative and nuclear energy use share
1.01%
2022
n/a
Net energy imports use share
-226.4%
2022
n/a
Electric power consumption per capita
2,546 kWh
2022
n/a
Renewable electricity output share
10.9%
2021
75.3%
2021
Hydroelectric share
0.81%
2022
70.5%
2021
Nuclear share
0%
2021
0%
2021
Electricity access
100%
2023
35.5%
2023

Society

Mongolia Sierra Leone
% of world population
0.04%
2024
0.11%
2024
Annual migration change
+79
2025
-11,309
2025
Urban population
71%
2024
45.4%
2024
Male:Female ratio
49.9:50.1
2024
49.9:50.1
2024
Average male height
5.6 ft
2025
5.46 ft
2025
Average female height
5.25 ft
2025
5.16 ft
2025
Quality of life index
49
2026
29.4
2026
Corruption Perceptions Index
31
2025
34
2025
Higher education index
38
2026
20
2026
Homicides per 100K people
5.59
2024
2.14
2020
Road traffic mortality per 100K people
21
2019
33
2019
Visa free countries
77
2025
66
2025
Adult literacy rate
98.6%
2023
48.6%
2022
English speaking
1%
2025
83.5%
2023
People using the Internet
83%
2023
20.6%
2023

Health

Mongolia Sierra Leone
Government health expenditure per capita
$360
2023
$35.8
2023
Out-of-pocket health expenditure per capita
$175.5
2023
$19.5
2023
Life expectancy
72.5 years
2026
62.3 years
2026
Foreign aid share of health expenditure
3.8%
2023
28.5%
2023
Physicians per 1,000 people
4.13
2022
0.13
2022
Age at first childbirth
20.5 years
2025
19.6 years
2025
Maternal mortality per 100K births
41
2023
354
2023
Mortality rate before reaching 5 years of age
13.6
2023
94.3
2023
Obesity rate
24.8%
2022
7.32%
2022
Diabetes prevalence
10.3%
2024
4.8%
2024
Air quality index
24
2026
16
2026
Tobacco use prevalence
29.5%
2022
12.9%
2022
Pure alcohol consumption per capita
7.68 liters
2020
0.29 liters
2020

Territory

Mongolia Sierra Leone
% of world land
1.05%
2026
0.05%
2026
Land area per capita
170,717 sq mi
2024
3,225 sq mi
2024
Agricultural land area
414,933 sq mi
2026
15,247 sq mi
2026
Forest area
54,709 sq mi
2026
9,559 sq mi
2026
Roads length
70,339 mi
2017
7,270 mi
2015

In-depth comparisons

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Data sources:

  1. World Bank | Health (1960–2025, retrieved 2026-04-06)
  2. United Nations | World Population Prospects (1950–2026, retrieved 2026-03-10)
  3. U.S. Census Bureau (1960–2025, retrieved 2026-02-08)
  4. Central Intelligence Agency (CIA) (2000–2025, retrieved 2026-02-20)
  5. International Monetary Fund (IMF) | Fiscal Monitor (2024, retrieved 2026-02-20)
  6. LivingCost (2026, retrieved 2025-10-14)
  7. World Obesity Federation (2022, retrieved 2026-02-08)
  8. Passport Index (2025, retrieved 2026-02-08)
  9. Transparency International (2025, retrieved 2026-02-10)
  10. The Heritage Foundation | Economic Freedom Index (2026, retrieved 2026-03-09)
  11. EduRank (2026, retrieved 2025-10-13)

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