The population of Guinea-Bissau is expected to grow by 49,000 in 2025 and reach 2,291,000 in 2026. Migration (including immigration and emigration) decreases population by 1,999 people yearly. On average there are 70,634 births and 19,494 deaths in Guinea-Bissau per year. Rate of natural increase is approximately 2.28 percent per year. The population density of Guinea-Bissau has changed from 28.5 in 1980 to 76.3 in 2023.
| Current population | 2,266,970 people at present (Saturday 5th of July 2025) | |
| Median Age | 24.0 years |
| Life expectancy | 60.8 years | |
| Population density | 79.7 per km2 |
| Year | Population | Year change | Migrants | Median age | Fertility rate | Density (Ppl/km2) | Urban population |
|---|---|---|---|---|---|---|---|
| 2025 | 2,242,000 | 49,000 (2.2%) | -1,999 | 24.0 | 4.00 | 80 | 1,254,000 (56.0%) |
| 2024 | 2,193,000 | 49,000 (2.2%) | -2,000 | 23.9 | 78 | 1,215,000 (55.4%) | |
| 2023 | 2,144,000 | 48,000 (2.2%) | -2,000 | 23.7 | 76 | 1,175,000 (54.8%) | |
| 2022 | 2,096,000 | 48,000 (2.3%) | -2,000 | 23.6 | 75 | 1,136,000 (54.2%) | |
| 2021 | 2,048,000 | 47,000 (2.3%) | -2,000 | 23.5 | 73 | 1,097,000 (53.6%) | |
| 2020 | 2,001,000 | 47,000 (2.4%) | -2,000 | 23.4 | 4.34 | 71 | 1,059,000 (52.9%) |
| 2019 | 0 | 0 (0.0%) | -1,999 | 23.3 | 4.41 | 70 | 1,021,000 (52.2%) |
| 2018 | 0 | 0 (0.0%) | -1,999 | 23.1 | 4.49 | 68 | 983,000 (51.6%) |
| 2017 | 0 | 0 (0.0%) | -1,999 | 23.1 | 4.56 | 66 | 946,000 (50.8%) |
| 2016 | 0 | 0 (0.0%) | -1,999 | 22.9 | 4.64 | 65 | 909,556 (50.1%) |
| 2015 | 1,770,526 | 44,782 (2.5%) | -1,999 | 22.9 | 4.71 | 63 | 873,436 (49.3%) |
| 2010 | 1,555,880 | 38,432 (2.5%) | -2,001 | 22.5 | 5.05 | 55 | 703,584 (45.2%) |
| 2005 | 1,380,838 | 30,493 (2.2%) | -5,000 | 22.3 | 5.39 | 49 | 564,307 (40.9%) |
| 2000 | 1,243,229 | 22,435 (1.8%) | -7,980 | 21.9 | 5.82 | 44 | 455,693 (36.7%) |
| 1995 | 1,137,122 | 23,581 (2.1%) | -11,761 | 22.0 | 6.29 | 40 | 371,077 (32.6%) |
| 1990 | 1,012,280 | 23,760 (2.4%) | -6,000 | 22.0 | 6.63 | 36 | 284,764 (28.1%) |
| 1985 | 899,509 | 22,636 (2.5%) | -5,601 | 22.3 | 6.74 | 32 | 201,769 (22.4%) |
| 1980 | 800,854 | 8,392 (1.1%) | -6,000 | 22.8 | 6.49 | 28 | 140,990 (17.6%) |
| 1975 | 778,470 | 9,525 (1.2%) | -15,873 | 24.3 | 6.15 | 28 | 124,166 (16.0%) |
| 1970 | 711,827 | 13,489 (1.9%) | -3,000 | 24.4 | 6.04 | 25 | 107,714 (15.1%) |
| 1965 | 652,562 | 8,601 (1.3%) | -1,446 | 24.5 | 5.97 | 23 | 93,636 (14.3%) |
| 1960 | 616,409 | 7,006 (1.1%) | -4,000 | 24.4 | 5.92 | 22 | 83,832 (13.6%) |
In 2024 the population of Guinea-Bissau was 2,193,000 and the average age decreased from 24.4 in 1960 to 23.9. Urban population has increased from 455,693 (36.7%) in 2000 to 1,254,000 (56.0%) in the current year. The population density of Guinea-Bissau has changed from 28.5 in 1980 to 76.3 in 2023.
| Year | Population | Year change | Migrants | Median age | Fertility rate | Density (Ppl/km2) | Urban population |
|---|---|---|---|---|---|---|---|
| 2020 | 0 | 0 (0.0%) | -2,000 | 23.4 | 4.34 | 71 | 1,059,000 (52.9%) |
| 2025 | 2,242,000 | 49,000 (2.2%) | -1,999 | 24.0 | 4.00 | 80 | 1,254,000 (56.0%) |
| 2030 | 2,493,000 | 51,000 (2.1%) | -1,998 | 24.8 | 3.71 | 89 | 1,456,000 (58.4%) |
| 2035 | 2,755,000 | 53,000 (1.9%) | -1,998 | 25.6 | 3.46 | 98 | 1,661,000 (60.3%) |
| 2040 | 3,031,000 | 56,000 (1.9%) | -2,000 | 26.5 | 3.24 | 108 | 1,873,000 (61.8%) |
| 2045 | 3,316,000 | 58,000 (1.8%) | -1,999 | 27.3 | 3.06 | 118 | 2,098,000 (63.3%) |
| 2050 | 3,603,000 | 58,000 (1.6%) | -1,999 | 28.2 | 2.90 | 128 | 2,332,000 (64.7%) |
The life expectancy at birth should reach 67.9 (65.6 years for male and 70.3 years for females). Population density will go up to 128.1 people per square kilometer.
The demographics of Guinea-Bissau constitutes of 1,136,000 women and 1,106,000 men, which means there are 974 men per 1000 women. As far as age distribution goes, 49.9% of population (1,118,982) is 19 or younger, 46.8% of population (1,049,929) is between age 20 and 64 and 3.2% of population (71,968) is over 65.