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

Updated on by Georank

The latest officially reported population of Guinea-Bissau was 2,249,515 in 2025 vs 70,545,865 people in Tanzania in 2025. In 2026, based on the adjusted UN estimation, the current Guinea-Bissau's population is 2,323,460 people compared to 73,639,263 in Tanzania.

Population statistics:

  • Tanzania's population is 31.7 times bigger than Guinea-Bissau's.
  • Guinea-Bissau is ranked the 146th most populous country in the world, while Tanzania is the 20th.
  • The countries together account for 0.91% of the world: 0.03% for Guinea-Bissau vs 0.89% for Tanzania.
  • For the last 10 years, Guinea-Bissau has had an average growth rate of +2.36% per year vs +3.11% in Tanzania.
  • Since 2006, the population of Guinea-Bissau has increased from 1.42M people to 2.32M (64.2% growth), while Tanzania has grown from 40.3M to 73.6M (82.8% growth).

Guinea-Bissau vs Tanzania: population by year and forecast

Guinea-Bissau
Factual

Projection
Tanzania
Factual

Projection
1x
Year Population
Guinea-Bissau Tanzania
2100 4,713,104 265,471,550
2099 4,706,098 263,137,702
2098 4,699,568 260,784,676
2097 4,691,855 258,387,890
2096 4,682,938 255,972,277
2095 4,674,608 253,543,248
2094 4,663,103 251,095,452
2093 4,651,788 248,605,184
2092 4,639,582 246,083,651
2091 4,628,423 243,533,968
2090 4,616,772 240,979,094
2089 4,604,837 238,393,867
2088 4,592,099 235,775,056
2087 4,578,407 233,145,231
2086 4,562,793 230,474,072
2085 4,547,020 227,778,580
2084 4,530,206 225,090,075
2083 4,514,557 222,400,079
2082 4,498,172 219,697,321
2081 4,481,590 216,974,796
2080 4,461,992 214,235,505
2079 4,440,836 211,466,096
2078 4,419,277 208,688,171
2077 4,395,599 205,898,494
2076 4,371,019 203,086,766
2075 4,343,934 200,278,383
2074 4,318,519 197,449,196
2073 4,290,772 194,624,081
2072 4,262,846 191,805,820
2071 4,234,576 188,974,004
2070 4,206,253 186,134,634
2069 4,176,501 183,293,747
2068 4,145,457 180,458,385
2067 4,114,243 177,622,538
2066 4,082,951 174,786,430
2065 4,048,502 171,897,059
2064 4,013,784 169,048,435
2063 3,978,328 166,202,091
2062 3,941,631 163,354,473
2061 3,904,197 160,521,858
2060 3,868,146 157,707,240
2059 3,829,277 154,905,240
2058 3,789,609 152,106,040
2057 3,750,140 149,311,257
2056 3,710,996 146,505,507
2055 3,670,229 143,722,840
2054 3,627,303 140,970,467
2053 3,586,333 138,249,490
2052 3,543,640 135,540,803
2051 3,498,845 132,838,721
2050 3,453,155 130,145,345
2049 3,405,764 127,483,126
2048 3,358,731 124,809,212
2047 3,310,142 122,146,647
2046 3,263,507 119,511,124
2045 3,214,677 116,903,642
2044 3,167,400 114,318,843
2043 3,120,097 111,765,580
2042 3,072,862 109,231,423
2041 3,025,833 106,738,458
2040 2,978,159 104,262,479
2039 2,929,364 101,804,600
2038 2,881,007 99,370,760
2037 2,832,794 96,974,485
2036 2,783,401 94,592,848
2035 2,736,240 92,248,476
2034 2,688,290 89,920,872
2033 2,638,427 87,646,627
2032 2,588,961 85,401,853
2031 2,540,013 83,172,579
2030 2,491,987 80,989,443
2029 2,444,278 78,830,947
2028 2,396,253 76,723,335
2027 2,347,151 74,639,948
2026 2,298,439 72,582,361
2025 2,249,515 70,545,865
2024 2,201,352 68,560,157
2023 2,153,339 66,617,606
2022 2,105,529 64,711,821
2021 2,058,841 62,830,412
2020 2,013,255 60,972,798
2019 1,967,696 59,174,891
2018 1,922,168 57,437,145
2017 1,877,072 55,652,890
2016 1,831,893 53,824,013
2015 1,786,457 52,020,962
2014 1,741,122 50,351,512
2013 1,695,973 48,824,128
2012 1,651,417 47,374,260
2011 1,608,076 46,029,367
2010 1,566,347 44,758,488
2009 1,526,377 43,633,982
2008 1,488,054 42,570,728
2007 1,450,986 41,435,512
2006 1,415,303 40,294,902
2005 1,381,585 39,182,076
2004 1,349,563 38,109,668
2003 1,318,806 37,089,555
2002 1,289,307 36,121,304
2001 1,261,273 35,198,299
2000 1,234,741 34,260,139
1999 1,210,206 33,300,330
1998 1,187,473 32,420,458
1997 1,165,545 31,578,089
1996 1,143,535 30,945,762
1995 1,119,949 30,383,497
1994 1,092,031 29,442,356
1993 1,058,745 28,332,692
1992 1,024,356 27,457,588
1991 994,639 26,780,436
1990 973,669 26,110,207
1989 957,789 25,438,759
1988 942,061 24,769,686
1987 926,862 24,030,378
1986 912,126 23,258,959
1985 897,697 22,501,693
1984 883,519 21,779,066
1983 869,592 21,079,874
1982 855,891 20,398,571
1981 842,432 19,784,703
1980 829,303 19,189,769
1979 819,867 18,592,038
1978 791,694 17,976,566
1977 741,789 17,352,929
1976 694,191 16,736,211
1975 650,966 16,138,361
1974 613,338 15,561,630
1973 592,808 15,010,101
1972 586,620 14,479,308
1971 586,221 13,971,451
1970 584,403 13,492,677
1969 581,610 13,036,700
1968 578,170 12,602,076
1967 569,011 12,200,109
1966 566,908 11,827,459
1965 575,005 11,470,728
1964 588,543 11,127,826
1963 594,418 10,799,528
1962 589,474 10,487,756
1961 582,532 10,187,886
1960 577,633 9,901,419

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/tanzania | CC BY

From 2006 to 2016, the population of Guinea-Bissau increased by 416,590 people (a 29.4% growth), while Tanzania gained 13,529,111 people (a 33.6% growth).

For the next 10 years, from 2016 to 2026, Guinea-Bissau gained 491,567 people (a 26.8% growth), while Tanzania's population increased by 19,815,250 people (a 36.8% growth).

Guinea-Bissau was ranked 148th most populous country in 2006 and is 146th in 2026. Tanzania was ranked 30th in 2006 and ranked 20th 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 Tanzania will increase by 76.7% to 130,145,345 people and rank change from 20th to 15th.

Guinea-Bissau is projected to reach its peak in 2100 at 4.71M people compared to the peak of 265M people in 2100 for Tanzania.

Population growth rate by year

Guinea-Bissau
Factual

Projection
Tanzania
Factual

Projection
1x
Year Growth rate
Guinea-Bissau Tanzania
2100 0.15% 0.89%
2099 0.14% 0.9%
2098 0.16% 0.93%
2097 0.19% 0.94%
2096 0.18% 0.96%
2095 0.25% 0.97%
2094 0.24% 1%
2093 0.26% 1.02%
2092 0.24% 1.05%
2091 0.25% 1.06%
2090 0.26% 1.08%
2089 0.28% 1.11%
2088 0.3% 1.13%
2087 0.34% 1.16%
2086 0.35% 1.18%
2085 0.37% 1.19%
2084 0.35% 1.21%
2083 0.36% 1.23%
2082 0.37% 1.25%
2081 0.44% 1.28%
2080 0.48% 1.31%
2079 0.49% 1.33%
2078 0.54% 1.35%
2077 0.56% 1.38%
2076 0.62% 1.4%
2075 0.59% 1.43%
2074 0.65% 1.45%
2073 0.66% 1.47%
2072 0.67% 1.5%
2071 0.67% 1.53%
2070 0.71% 1.55%
2069 0.75% 1.57%
2068 0.76% 1.6%
2067 0.77% 1.62%
2066 0.85% 1.68%
2065 0.86% 1.69%
2064 0.89% 1.71%
2063 0.93% 1.74%
2062 0.96% 1.76%
2061 0.93% 1.78%
2060 1.02% 1.81%
2059 1.05% 1.84%
2058 1.05% 1.87%
2057 1.05% 1.92%
2056 1.11% 1.94%
2055 1.18% 1.95%
2054 1.14% 1.97%
2053 1.2% 2%
2052 1.28% 2.03%
2051 1.32% 2.07%
2050 1.39% 2.09%
2049 1.4% 2.14%
2048 1.47% 2.18%
2047 1.43% 2.21%
2046 1.52% 2.23%
2045 1.49% 2.26%
2044 1.52% 2.28%
2043 1.54% 2.32%
2042 1.55% 2.34%
2041 1.6% 2.37%
2040 1.67% 2.41%
2039 1.68% 2.45%
2038 1.7% 2.47%
2037 1.77% 2.52%
2036 1.72% 2.54%
2035 1.78% 2.59%
2034 1.89% 2.59%
2033 1.91% 2.63%
2032 1.93% 2.68%
2031 1.93% 2.7%
2030 1.95% 2.74%
2029 2% 2.75%
2028 2.09% 2.79%
2027 2.12% 2.83%
2026 2.17% 2.89%
2025 2.19% 2.9%
2024 2.23% 2.92%
2023 2.27% 2.95%
2022 2.27% 2.99%
2021 2.26% 3.05%
2020 2.32% 3.04%
2019 2.37% 3.03%
2018 2.4% 3.21%
2017 2.47% 3.4%
2016 2.54% 3.47%
2015 2.6% 3.32%
2014 2.66% 3.13%
2013 2.7% 3.06%
2012 2.7% 2.92%
2011 2.66% 2.84%
2010 2.62% 2.58%
2009 2.58% 2.5%
2008 2.55% 2.74%
2007 2.52% 2.83%
2006 2.44% 2.84%
2005 2.37% 2.81%
2004 2.33% 2.75%
2003 2.29% 2.68%
2002 2.22% 2.62%
2001 2.15% 2.74%
2000 2.03% 2.88%
1999 1.91% 2.71%
1998 1.88% 2.67%
1997 1.92% 2.04%
1996 2.11% 1.85%
1995 2.56% 3.2%
1994 3.14% 3.92%
1993 3.36% 3.19%
1992 2.99% 2.53%
1991 2.15% 2.57%
1990 1.66% 2.64%
1989 1.67% 2.7%
1988 1.64% 3.08%
1987 1.62% 3.32%
1986 1.61% 3.37%
1985 1.6% 3.32%
1984 1.6% 3.32%
1983 1.6% 3.34%
1982 1.6% 3.1%
1981 1.58% 3.1%
1980 1.15% 3.21%
1979 3.56% 3.42%
1978 6.73% 3.59%
1977 6.86% 3.68%
1976 6.64% 3.7%
1975 6.13% 3.71%
1974 3.46% 3.67%
1973 1.05% 3.67%
1972 0.07% 3.63%
1971 0.31% 3.55%
1970 0.48% 3.5%
1969 0.59% 3.45%
1968 1.61% 3.29%
1967 0.37% 3.15%
1966 -1.41% 3.11%
1965 -2.3% 3.08%
1964 -0.99% 3.04%
1963 0.84% 2.97%
1962 1.19% 2.94%
1961 0.85% 2.89%

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/tanzania | CC BY

In 2025, the population of Guinea-Bissau grew by 2.19%, while Tanzania's population grew by 2.9%.

Live population counters

Guinea-Bissau Tanzania
Current population
2323460
73639263
Population rank 146/197 20/197
Percent of world population 0.03% 0.89%
One net population change
10.9 minutes
15.9 seconds
One birth every
8.08 minutes
13.2 seconds
One death every
34.1 minutes
1.34 minutes
Daily growth/decline +132 +5,440
Annual growth/decline +48,163 +1,985,708
Annual growth/decline rate +2.19% +2.9%
Population growth rate rank 41/197 16/197
One migration net change every
6.4 hours
41.4 minutes
Annual migration change -1,373 -12,730
Net migration rank 96/196 139/196
Foreign-born residents 15,064 462,371
Foreign-born residents rank 172/195 83/195
Foreign-born share of population 0.7% 0.7%
Foreign-born share rank 165/195 167/195

Natural population change vs migration

Guinea-Bissau
Natural

Migration
Tanzania
Natural

Migration
1x
Year Population change
Guinea-Bissau Tanzania
Natural Migration Natural Migration
2025 - -1,373 - -12,730
2024 49,642 -1,712 1,993,730 -29,865
2023 49,498 -1,400 1,960,623 -39,388
2022 48,920 -1,400 1,927,960 -37,557
2021 47,242 -1,395 1,880,137 -7,704
2020 46,718 -1,394 1,861,377 -18,587
2019 47,196 -1,395 1,816,669 -63,602
2018 46,659 -1,396 1,777,852 -55,444
2017 46,318 -1,398 1,726,909 119,142
2016 46,814 -1,392 1,659,502 152,194
2015 46,846 -1,393 1,592,882 201,495
2014 46,615 -1,393 1,565,630 -21,083
2013 46,472 -1,395 1,509,008 1,241
2012 45,480 -1,442 1,439,325 -49,875
2011 44,405 -1,760 1,384,886 -84,546
2010 43,067 -2,257 1,363,477 -122,020
2009 41,950 -2,821 1,332,015 -324,478
2008 40,841 -3,313 1,303,728 -184,816
2007 40,288 -3,676 1,278,285 -126,793
2006 38,886 -4,142 1,257,927 -128,231
2005 37,347 -4,662 1,224,165 -128,251
2004 36,495 -5,144 1,175,379 -126,490
2003 35,649 -5,487 1,118,435 -127,101
2002 34,561 -5,712 1,063,195 -118,047
2001 33,461 -6,239 1,026,242 -125,375
2000 32,816 -6,971 985,185 -9,701
1999 30,916 -7,686 948,659 -4,489
1998 30,390 -8,163 920,806 -105,184
1997 29,792 -8,176 882,544 -13,400
1996 29,778 -7,369 868,524 -473,007
1995 29,142 -4,376 838,980 -109,971
1994 27,895 3,174 803,953 349,348
1993 26,943 8,562 778,044 288,004
1992 25,747 7,531 767,961 -83,825
1991 24,527 1,621 762,011 -91,851
1990 23,936 -8,151 750,825 -80,529
1989 24,286 -8,296 743,854 -71,268
1988 23,940 -8,473 736,551 -71,012
1987 23,549 -8,622 718,580 94,498
1986 23,301 -8,748 705,677 24,101
1985 23,116 -8,812 697,867 86,864
1984 22,861 -8,812 687,435 -26,938
1983 22,542 -8,729 679,720 58,161
1982 22,131 -8,539 662,627 -37,883
1981 21,611 -8,291 645,496 -42,485
1980 21,024 -8,086 629,444 -42,588
1979 19,736 -13,801 613,388 -4,792
1978 17,468 32,936 595,024 27,307
1977 15,484 33,922 574,938 49,997
1976 13,688 32,113 553,617 54,875
1975 11,998 28,645 533,906 53,290
1974 10,321 24,290 515,152 51,127
1973 8,430 -1,985 488,429 48,363
1972 7,911 -1,985 467,305 57,489
1971 8,183 -13,302 449,014 41,900
1970 7,632 1,123 427,988 38,635
1969 7,857 -11,033 408,322 37,006
1968 7,289 2,769 389,467 34,455
1967 6,742 1,516 374,763 5,265
1966 6,955 -11,006 360,229 5,049
1965 7,789 -19,928 343,456 4,742
1964 8,989 -23,936 328,527 9,090
1963 9,190 -5,993 314,644 4,333
1962 10,662 -3,960 300,663 3,916
1961 10,756 -3,575 286,839 8,338
1960 10,618 -8,007 275,814 1,946

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

GeoRank.org/population/guinea-bissau/tanzania | 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 Tanzania 98.8% is from natural causes (a gain of 18,197,641 people) and 1.2% is from migration (a gain of 220,684 people).

As of 2024, 15,064 residents or 0.7% of the population were not native-born in Guinea-Bissau, compared to 462,371 people or 0.7% in Tanzania.

Biggest cities by population

Guinea-Bissau
City Population
Bissau 492K
Bafata 29.6K
Tanzania
City Population
Dar es Salaam 4.72M
Zanzibar 710K
Mwanza 706K
Mbeya 542K
Morogoro 471K
Arusha 416K
Tanga 221K
Dodoma 214K
Moshi 145K

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/tanzania | 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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