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Population in Guinea-Bissau compared to Mongolia: Trends, Charts, Rankings

Updated on by Georank

The latest officially reported population of Guinea-Bissau was 2,249,515 in 2025 vs 3,568,978 people in Mongolia in 2025. In 2026, based on the adjusted UN estimation, the current Guinea-Bissau's population is 2,323,460 people compared to 3,630,744 in Mongolia.

Population statistics:

  • Mongolia's population is 1.56 times bigger than Guinea-Bissau's.
  • Guinea-Bissau is ranked the 146th most populous country in the world, while Mongolia is the 132nd.
  • The countries together account for 0.07% of the world: 0.03% for Guinea-Bissau vs 0.04% for Mongolia.
  • For the last 10 years, Guinea-Bissau has had an average growth rate of +2.36% per year vs +1.71% in Mongolia.
  • Since 2006, the population of Guinea-Bissau has increased from 1.42M people to 2.32M (64.2% growth), while Mongolia has grown from 2.57M to 3.63M (41.4% growth).

Guinea-Bissau vs Mongolia: population by year and forecast

Guinea-Bissau
Factual

Projection
Mongolia
Factual

Projection
1x
Year Population
Guinea-Bissau Mongolia
2100 4,713,104 5,630,532
2099 4,706,098 5,624,298
2098 4,699,568 5,616,442
2097 4,691,855 5,607,739
2096 4,682,938 5,598,366
2095 4,674,608 5,587,141
2094 4,663,103 5,575,743
2093 4,651,788 5,563,600
2092 4,639,582 5,550,506
2091 4,628,423 5,537,031
2090 4,616,772 5,522,419
2089 4,604,837 5,507,083
2088 4,592,099 5,491,226
2087 4,578,407 5,475,425
2086 4,562,793 5,459,661
2085 4,547,020 5,442,388
2084 4,530,206 5,424,928
2083 4,514,557 5,406,747
2082 4,498,172 5,388,623
2081 4,481,590 5,369,593
2080 4,461,992 5,349,817
2079 4,440,836 5,329,240
2078 4,419,277 5,307,283
2077 4,395,599 5,286,383
2076 4,371,019 5,264,220
2075 4,343,934 5,241,700
2074 4,318,519 5,218,897
2073 4,290,772 5,195,622
2072 4,262,846 5,172,532
2071 4,234,576 5,149,066
2070 4,206,253 5,124,853
2069 4,176,501 5,101,195
2068 4,145,457 5,077,035
2067 4,114,243 5,052,818
2066 4,082,951 5,027,552
2065 4,048,502 5,002,655
2064 4,013,784 4,978,185
2063 3,978,328 4,953,806
2062 3,941,631 4,929,364
2061 3,904,197 4,904,690
2060 3,868,146 4,878,877
2059 3,829,277 4,852,963
2058 3,789,609 4,826,761
2057 3,750,140 4,799,120
2056 3,710,996 4,771,151
2055 3,670,229 4,742,184
2054 3,627,303 4,711,735
2053 3,586,333 4,679,745
2052 3,543,640 4,646,658
2051 3,498,845 4,612,090
2050 3,453,155 4,576,701
2049 3,405,764 4,539,215
2048 3,358,731 4,500,638
2047 3,310,142 4,460,511
2046 3,263,507 4,419,188
2045 3,214,677 4,376,222
2044 3,167,400 4,333,010
2043 3,120,097 4,289,776
2042 3,072,862 4,245,757
2041 3,025,833 4,201,838
2040 2,978,159 4,158,320
2039 2,929,364 4,115,023
2038 2,881,007 4,072,646
2037 2,832,794 4,030,644
2036 2,783,401 3,989,867
2035 2,736,240 3,950,239
2034 2,688,290 3,911,316
2033 2,638,427 3,873,353
2032 2,588,961 3,836,311
2031 2,540,013 3,800,027
2030 2,491,987 3,763,374
2029 2,444,278 3,726,490
2028 2,396,253 3,688,767
2027 2,347,151 3,650,012
2026 2,298,439 3,610,395
2025 2,249,515 3,568,978
2024 2,201,352 3,524,788
2023 2,153,339 3,481,145
2022 2,105,529 3,433,748
2021 2,058,841 3,383,741
2020 2,013,255 3,327,204
2019 1,967,696 3,267,673
2018 1,922,168 3,208,189
2017 1,877,072 3,148,917
2016 1,831,893 3,088,856
2015 1,786,457 3,026,864
2014 1,741,122 2,963,113
2013 1,695,973 2,899,011
2012 1,651,417 2,839,705
2011 1,608,076 2,786,317
2010 1,566,347 2,738,622
2009 1,526,377 2,691,115
2008 1,488,054 2,643,201
2007 1,450,986 2,601,850
2006 1,415,303 2,567,168
2005 1,381,585 2,536,407
2004 1,349,563 2,508,412
2003 1,318,806 2,480,374
2002 1,289,307 2,449,027
2001 1,261,273 2,417,751
2000 1,234,741 2,388,299
1999 1,210,206 2,356,813
1998 1,187,473 2,323,809
1997 1,165,545 2,291,750
1996 1,143,535 2,259,507
1995 1,119,949 2,224,945
1994 1,092,031 2,189,395
1993 1,058,745 2,165,130
1992 1,024,356 2,167,790
1991 994,639 2,165,342
1990 973,669 2,098,710
1989 957,789 2,124,185
1988 942,061 2,076,322
1987 926,862 2,022,800
1986 912,126 1,970,965
1985 897,697 1,921,514
1984 883,519 1,874,349
1983 869,592 1,829,092
1982 855,891 1,785,364
1981 842,432 1,742,857
1980 829,303 1,701,335
1979 819,867 1,660,659
1978 791,694 1,619,468
1977 741,789 1,576,245
1976 694,191 1,531,945
1975 650,966 1,488,296
1974 613,338 1,446,050
1973 592,808 1,405,502
1972 586,620 1,366,821
1971 586,221 1,330,071
1970 584,403 1,295,272
1969 581,610 1,262,284
1968 578,170 1,229,930
1967 569,011 1,196,996
1966 566,908 1,163,754
1965 575,005 1,131,177
1964 588,543 1,100,234
1963 594,418 1,071,362
1962 589,474 1,041,444
1961 582,532 1,009,284
1960 577,633 977,595

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/guinea-bissau/mongolia | CC BY

From 2006 to 2016, the population of Guinea-Bissau increased by 416,590 people (a 29.4% growth), while Mongolia gained 521,688 people (a 20.3% growth).

For the next 10 years, from 2016 to 2026, Guinea-Bissau gained 491,567 people (a 26.8% growth), while Mongolia's population increased by 541,888 people (a 17.5% growth).

Guinea-Bissau was ranked 148th most populous country in 2006 and is 146th in 2026. Mongolia was ranked 137th in 2006 and ranked 132nd now.

The UN's World Population Prospects forecasts that in 24 years (in 2050) Guinea-Bissau's population will grow by 48.6% to 3,453,155 people with a rank change from 146th to 136th. The population of Mongolia will increase by 26.1% to 4,576,701 people and rank change from 132nd to 130th.

Guinea-Bissau is projected to reach its peak in 2100 at 4.71M people compared to the peak of 5.63M people in 2100 for Mongolia.

Population growth rate by year

Guinea-Bissau
Factual

Projection
Mongolia
Factual

Projection
1x
Year Growth rate
Guinea-Bissau Mongolia
2100 0.15% 0.11%
2099 0.14% 0.14%
2098 0.16% 0.16%
2097 0.19% 0.17%
2096 0.18% 0.2%
2095 0.25% 0.2%
2094 0.24% 0.22%
2093 0.26% 0.24%
2092 0.24% 0.24%
2091 0.25% 0.26%
2090 0.26% 0.28%
2089 0.28% 0.29%
2088 0.3% 0.29%
2087 0.34% 0.29%
2086 0.35% 0.32%
2085 0.37% 0.32%
2084 0.35% 0.34%
2083 0.36% 0.34%
2082 0.37% 0.35%
2081 0.44% 0.37%
2080 0.48% 0.39%
2079 0.49% 0.41%
2078 0.54% 0.4%
2077 0.56% 0.42%
2076 0.62% 0.43%
2075 0.59% 0.44%
2074 0.65% 0.45%
2073 0.66% 0.45%
2072 0.67% 0.46%
2071 0.67% 0.47%
2070 0.71% 0.46%
2069 0.75% 0.48%
2068 0.76% 0.48%
2067 0.77% 0.5%
2066 0.85% 0.5%
2065 0.86% 0.49%
2064 0.89% 0.49%
2063 0.93% 0.5%
2062 0.96% 0.5%
2061 0.93% 0.53%
2060 1.02% 0.53%
2059 1.05% 0.54%
2058 1.05% 0.58%
2057 1.05% 0.59%
2056 1.11% 0.61%
2055 1.18% 0.65%
2054 1.14% 0.68%
2053 1.2% 0.71%
2052 1.28% 0.75%
2051 1.32% 0.77%
2050 1.39% 0.83%
2049 1.4% 0.86%
2048 1.47% 0.9%
2047 1.43% 0.94%
2046 1.52% 0.98%
2045 1.49% 1%
2044 1.52% 1.01%
2043 1.54% 1.04%
2042 1.55% 1.05%
2041 1.6% 1.05%
2040 1.67% 1.05%
2039 1.68% 1.04%
2038 1.7% 1.04%
2037 1.77% 1.02%
2036 1.72% 1%
2035 1.78% 1%
2034 1.89% 0.98%
2033 1.91% 0.97%
2032 1.93% 0.95%
2031 1.93% 0.97%
2030 1.95% 0.99%
2029 2% 1.02%
2028 2.09% 1.06%
2027 2.12% 1.1%
2026 2.17% 1.16%
2025 2.19% 1.25%
2024 2.23% 1.25%
2023 2.27% 1.38%
2022 2.27% 1.48%
2021 2.26% 1.7%
2020 2.32% 1.82%
2019 2.37% 1.85%
2018 2.4% 1.88%
2017 2.47% 1.94%
2016 2.54% 2.05%
2015 2.6% 2.15%
2014 2.66% 2.21%
2013 2.7% 2.09%
2012 2.7% 1.92%
2011 2.66% 1.74%
2010 2.62% 1.77%
2009 2.58% 1.81%
2008 2.55% 1.59%
2007 2.52% 1.35%
2006 2.44% 1.21%
2005 2.37% 1.12%
2004 2.33% 1.13%
2003 2.29% 1.28%
2002 2.22% 1.29%
2001 2.15% 1.23%
2000 2.03% 1.34%
1999 1.91% 1.42%
1998 1.88% 1.4%
1997 1.92% 1.43%
1996 2.11% 1.55%
1995 2.56% 1.62%
1994 3.14% 1.12%
1993 3.36% -0.12%
1992 2.99% 0.11%
1991 2.15% 3.17%
1990 1.66% -1.2%
1989 1.67% 2.31%
1988 1.64% 2.65%
1987 1.62% 2.63%
1986 1.61% 2.57%
1985 1.6% 2.52%
1984 1.6% 2.47%
1983 1.6% 2.45%
1982 1.6% 2.44%
1981 1.58% 2.44%
1980 1.15% 2.45%
1979 3.56% 2.54%
1978 6.73% 2.74%
1977 6.86% 2.89%
1976 6.64% 2.93%
1975 6.13% 2.92%
1974 3.46% 2.88%
1973 1.05% 2.83%
1972 0.07% 2.76%
1971 0.31% 2.69%
1970 0.48% 2.61%
1969 0.59% 2.63%
1968 1.61% 2.75%
1967 0.37% 2.86%
1966 -1.41% 2.88%
1965 -2.3% 2.81%
1964 -0.99% 2.69%
1963 0.84% 2.87%
1962 1.19% 3.19%
1961 0.85% 3.24%

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/guinea-bissau/mongolia | CC BY

In 2025, the population of Guinea-Bissau grew by 2.19%, while Mongolia's population grew by 1.25%.

Live population counters

Guinea-Bissau Mongolia
Current population
2323460
3630744
Population rank 146/197 132/197
Percent of world population 0.03% 0.04%
One net population change
10.9 minutes
11.9 minutes
One birth every
8.08 minutes
8.82 minutes
One death every
34.1 minutes
27.1 minutes
Daily growth/decline +132 +121
Annual growth/decline +48,163 +44,190
Annual growth/decline rate +2.19% +1.25%
Population growth rate rank 41/197 81/197
One migration net change every
6.4 hours
4.63 days
Annual migration change -1,373 +79
Net migration rank 96/196 74/196
Foreign-born residents 15,064 22,589
Foreign-born residents rank 172/195 169/195
Foreign-born share of population 0.7% 0.6%
Foreign-born share rank 165/195 171/195

Natural population change vs migration

Guinea-Bissau
Natural

Migration
Mongolia
Natural

Migration
1x
Year Population change
Guinea-Bissau Mongolia
Natural Migration Natural Migration
2025 - -1,373 - 79
2024 49,642 -1,712 40,182 83
2023 49,498 -1,400 46,995 0
2022 48,920 -1,400 47,730 0
2021 47,242 -1,395 52,109 0
2020 46,718 -1,394 60,888 0
2019 47,196 -1,395 61,433 8,660
2018 46,659 -1,396 60,635 7,811
2017 46,318 -1,398 57,940 6,831
2016 46,814 -1,392 62,086 5,633
2015 46,846 -1,393 64,473 4,307
2014 46,615 -1,393 66,078 2,921
2013 46,472 -1,395 62,618 1,505
2012 45,480 -1,442 55,942 351
2011 44,405 -1,760 50,711 -505
2010 43,067 -2,257 44,914 -6,444
2009 41,950 -2,821 48,876 -15,007
2008 40,841 -3,313 45,843 -17,277
2007 40,288 -3,676 39,636 -15,220
2006 38,886 -4,142 33,609 -11,934
2005 37,347 -4,662 29,290 -8,924
2004 36,495 -5,144 28,418 -8,148
2003 35,649 -5,487 28,827 -7,986
2002 34,561 -5,712 30,439 -8,934
2001 33,461 -6,239 32,052 -10,244
2000 32,816 -6,971 32,753 -11,241
1999 30,916 -7,686 32,283 -13,481
1998 30,390 -8,163 31,757 -10,315
1997 29,792 -8,176 32,403 -9,132
1996 29,778 -7,369 33,741 -8,626
1995 29,142 -4,376 34,473 -7,346
1994 27,895 3,174 34,711 -5,449
1993 26,943 8,562 36,924 -5,429
1992 25,747 7,531 42,437 -8,404
1991 24,527 1,621 47,884 -11,427
1990 23,936 -8,151 49,443 -11,881
1989 24,286 -8,296 51,420 -9,757
1988 23,940 -8,473 51,588 2,459
1987 23,549 -8,622 51,140 1,855
1986 23,301 -8,748 50,329 354
1985 23,116 -8,812 49,944 -1,719
1984 22,861 -8,812 48,562 -2,452
1983 22,542 -8,729 46,919 -2,522
1982 22,131 -8,539 45,179 -2,132
1981 21,611 -8,291 43,588 -1,615
1980 21,024 -8,086 42,343 -1,268
1979 19,736 -13,801 41,568 -1,296
1978 17,468 32,936 40,276 1,833
1977 15,484 33,922 38,995 5,354
1976 13,688 32,113 37,670 6,577
1975 11,998 28,645 36,490 6,556
1974 10,321 24,290 35,297 6,153
1973 8,430 -1,985 33,993 5,647
1972 7,911 -1,985 32,727 4,999
1971 8,183 -13,302 31,536 4,238
1970 7,632 1,123 30,558 3,263
1969 7,857 -11,033 29,781 2,366
1968 7,289 2,769 29,017 3,535
1967 6,742 1,516 28,178 5,139
1966 6,955 -11,006 27,338 5,837
1965 7,789 -19,928 26,364 5,610
1964 8,989 -23,936 25,317 4,599
1963 9,190 -5,993 24,142 3,687
1962 10,662 -3,960 22,960 9,049
1961 10,756 -3,575 21,873 10,440
1960 10,618 -8,007 20,726 10,334

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

GeoRank.org/population/guinea-bissau/mongolia | CC BY

Over the last 10 years, 97.1% of the population change in Guinea-Bissau is from natural causes (a gain of 475,853 people) and 2.91% is from migration (a loss of 14,275 people). In Mongolia 94.3% is from natural causes (a gain of 554,471 people) and 5.67% is from migration (a gain of 33,325 people).

As of 2024, 15,064 residents or 0.7% of the population were not native-born in Guinea-Bissau, compared to 22,589 people or 0.6% in Mongolia.

Biggest cities by population

Guinea-Bissau
City Population
Bissau 492K
Bafata 29.6K
Mongolia
City Population
Ulaanbaatar 1.4M
Bulgan 12.3K

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/guinea-bissau/mongolia | 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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