The population of United Republic of Tanzania is expected to grow by 2,067,000 in 2025 and reach 74,794,000 in 2026. Migration (including immigration and emigration) decreases population by 40,000 people yearly. On average there are 2,533,151 births and 406,287 deaths in Tanzania per year. Rate of natural increase is approximately 2.93 percent per year. The population density of Tanzania has changed from 21.1 in 1980 to 77.4 in 2023.
| Current population | 73,746,184 people at present (Thursday 3rd of July 2025) | |
| Median Age | 22.7 years |
| Life expectancy | 68.6 years | |
| Population density | 82.1 per km2 |
| Year | Population | Year change | Migrants | Median age | Fertility rate | Density (Ppl/km2) | Urban population |
|---|---|---|---|---|---|---|---|
| 2025 | 72,681,000 | 2,067,000 (2.8%) | -40,000 | 22.7 | 4.48 | 82 | 28,055,000 (38.6%) |
| 2024 | 70,614,000 | 2,023,000 (2.9%) | -40,000 | 22.6 | 80 | 26,775,000 (37.9%) | |
| 2023 | 68,591,000 | 1,979,000 (2.9%) | -40,000 | 22.5 | 77 | 25,536,000 (37.2%) | |
| 2022 | 66,612,000 | 1,938,000 (2.9%) | -40,000 | 22.4 | 75 | 24,337,000 (36.5%) | |
| 2021 | 64,674,000 | 1,899,000 (2.9%) | -40,000 | 22.3 | 73 | 23,178,000 (35.8%) | |
| 2020 | 62,775,000 | 1,861,000 (3.0%) | -40,000 | 22.3 | 4.77 | 71 | 22,058,000 (35.1%) |
| 2019 | 0 | 0 (0.0%) | -40,000 | 22.2 | 4.83 | 69 | 20,976,000 (34.4%) |
| 2018 | 0 | 0 (0.0%) | -40,000 | 22.1 | 4.89 | 67 | 19,932,000 (33.7%) |
| 2017 | 0 | 0 (0.0%) | -40,000 | 22.0 | 4.96 | 65 | 18,925,000 (33.0%) |
| 2016 | 0 | 0 (0.0%) | -40,000 | 21.9 | 5.02 | 63 | 17,958,712 (32.3%) |
| 2015 | 53,879,957 | 1,645,088 (3.1%) | -40,000 | 21.9 | 5.08 | 61 | 17,030,377 (31.6%) |
| 2010 | 46,098,591 | 1,434,360 (3.1%) | -40,000 | 21.8 | 5.43 | 52 | 12,960,158 (28.1%) |
| 2005 | 39,410,545 | 1,160,561 (2.9%) | -53,063 | 21.7 | 5.64 | 44 | 9,791,550 (24.8%) |
| 2000 | 34,178,042 | 886,502 (2.6%) | -59,190 | 21.7 | 5.69 | 39 | 7,624,779 (22.3%) |
| 1995 | 29,960,776 | 890,161 (3.0%) | -41,175 | 21.6 | 5.88 | 34 | 6,154,842 (20.5%) |
| 1990 | 25,459,604 | 799,029 (3.1%) | 118,257 | 21.5 | 6.21 | 29 | 4,807,792 (18.9%) |
| 1985 | 21,836,999 | 663,396 (3.0%) | 13,642 | 21.5 | 6.47 | 25 | 3,661,410 (16.8%) |
| 1980 | 18,683,157 | 573,273 (3.1%) | 7,436 | 21.4 | 6.65 | 21 | 2,719,334 (14.6%) |
| 1975 | 15,980,301 | 503,007 (3.2%) | -4,450 | 21.4 | 6.75 | 18 | 1,781,164 (11.1%) |
| 1970 | 13,605,529 | 418,972 (3.1%) | 23,798 | 21.5 | 6.77 | 15 | 1,068,306 (7.9%) |
| 1965 | 11,683,528 | 344,431 (3.0%) | 7,205 | 21.5 | 6.80 | 13 | 704,517 (6.0%) |
| 1960 | 10,074,507 | 298,891 (2.9%) | 5,399 | 21.5 | 6.81 | 11 | 528,509 (5.2%) |
In 2024 the population of Tanzania was 70,614,000 and the average age increased from 21.5 in 1960 to 22.6. Urban population has increased from 7,624,779 (22.3%) in 2000 to 28,055,000 (38.6%) in the current year. The population density of Tanzania has changed from 21.1 in 1980 to 77.4 in 2023.
| Year | Population | Year change | Migrants | Median age | Fertility rate | Density (Ppl/km2) | Urban population |
|---|---|---|---|---|---|---|---|
| 2020 | 0 | 0 (0.0%) | -40,000 | 22.3 | 4.77 | 71 | 22,058,000 (35.1%) |
| 2025 | 72,681,000 | 2,067,000 (2.8%) | -40,000 | 22.7 | 4.48 | 82 | 28,055,000 (38.6%) |
| 2030 | 83,702,000 | 2,296,000 (2.7%) | -40,000 | 23.3 | 4.21 | 95 | 35,079,000 (41.9%) |
| 2035 | 95,862,000 | 2,519,000 (2.6%) | -40,000 | 23.9 | 3.96 | 108 | 43,115,000 (45.0%) |
| 2040 | 109,060,000 | 2,717,000 (2.5%) | -40,000 | 24.6 | 3.73 | 123 | 52,027,000 (47.7%) |
| 2045 | 123,174,000 | 2,890,000 (2.4%) | -40,000 | 25.4 | 3.53 | 139 | 62,012,000 (50.3%) |
| 2050 | 138,082,000 | 3,043,000 (2.2%) | -40,000 | 26.2 | 3.35 | 156 | 73,160,000 (53.0%) |
The life expectancy at birth should reach 74.0 (72.1 years for male and 76.0 years for females). Population density will go up to 155.9 people per square kilometer.
The demographics of Tanzania constitutes of 36,642,000 women and 36,040,000 men, which means there are 984 men per 1000 women. As far as age distribution goes, 53.8% of population (39,087,842) is 19 or younger, 43.1% of population (31,289,171) is between age 20 and 64 and 3.2% of population (2,311,256) is over 65.