The latest officially reported population of Sao Tome and Principe was 240,254 in 2025 vs 70,545,865 people in Tanzania in 2025. In 2026, based on the adjusted UN estimation, the current Sao Tome and Principe's population is 247,495 people compared to 73,639,263 in Tanzania.
Population statistics:
- Tanzania's population is 297.5 times bigger than Sao Tome and Principe's.
- Sao Tome and Principe is ranked the 176th most populous country in the world, while Tanzania is the 20th.
- The countries together account for 0.89% of the world: 0.003% for Sao Tome and Principe vs 0.89% for Tanzania.
- For the last 10 years, Sao Tome and Principe has had an average growth rate of +1.83% per year vs +3.11% in Tanzania.
- Since 2006, the population of Sao Tome and Principe has increased from 166K people to 247K (49.4% growth), while Tanzania has grown from 40.3M to 73.6M (82.8% growth).
Sao Tome and Principe vs Tanzania: population by year and forecast
| Year | Population | |
|---|---|---|
Sao Tome
|
Tanzania
|
|
| 2100 | 538,656 | 265,471,550 |
| 2099 | 537,257 | 263,137,702 |
| 2098 | 535,715 | 260,784,676 |
| 2097 | 534,052 | 258,387,890 |
| 2096 | 532,281 | 255,972,277 |
| 2095 | 530,505 | 253,543,248 |
| 2094 | 528,585 | 251,095,452 |
| 2093 | 526,572 | 248,605,184 |
| 2092 | 524,436 | 246,083,651 |
| 2091 | 522,255 | 243,533,968 |
| 2090 | 519,929 | 240,979,094 |
| 2089 | 517,542 | 238,393,867 |
| 2088 | 515,028 | 235,775,056 |
| 2087 | 512,499 | 233,145,231 |
| 2086 | 509,949 | 230,474,072 |
| 2085 | 507,271 | 227,778,580 |
| 2084 | 504,516 | 225,090,075 |
| 2083 | 501,611 | 222,400,079 |
| 2082 | 498,655 | 219,697,321 |
| 2081 | 495,622 | 216,974,796 |
| 2080 | 492,416 | 214,235,505 |
| 2079 | 489,178 | 211,466,096 |
| 2078 | 485,864 | 208,688,171 |
| 2077 | 482,385 | 205,898,494 |
| 2076 | 478,877 | 203,086,766 |
| 2075 | 475,315 | 200,278,383 |
| 2074 | 471,700 | 197,449,196 |
| 2073 | 468,051 | 194,624,081 |
| 2072 | 464,286 | 191,805,820 |
| 2071 | 460,447 | 188,974,004 |
| 2070 | 456,490 | 186,134,634 |
| 2069 | 452,388 | 183,293,747 |
| 2068 | 448,306 | 180,458,385 |
| 2067 | 444,092 | 177,622,538 |
| 2066 | 439,773 | 174,786,430 |
| 2065 | 435,502 | 171,897,059 |
| 2064 | 431,068 | 169,048,435 |
| 2063 | 426,645 | 166,202,091 |
| 2062 | 422,127 | 163,354,473 |
| 2061 | 417,629 | 160,521,858 |
| 2060 | 413,061 | 157,707,240 |
| 2059 | 408,522 | 154,905,240 |
| 2058 | 403,970 | 152,106,040 |
| 2057 | 399,359 | 149,311,257 |
| 2056 | 394,790 | 146,505,507 |
| 2055 | 390,100 | 143,722,840 |
| 2054 | 385,416 | 140,970,467 |
| 2053 | 380,685 | 138,249,490 |
| 2052 | 375,964 | 135,540,803 |
| 2051 | 371,143 | 132,838,721 |
| 2050 | 366,347 | 130,145,345 |
| 2049 | 361,542 | 127,483,126 |
| 2048 | 356,694 | 124,809,212 |
| 2047 | 351,813 | 122,146,647 |
| 2046 | 346,841 | 119,511,124 |
| 2045 | 341,791 | 116,903,642 |
| 2044 | 336,747 | 114,318,843 |
| 2043 | 331,669 | 111,765,580 |
| 2042 | 326,608 | 109,231,423 |
| 2041 | 321,551 | 106,738,458 |
| 2040 | 316,415 | 104,262,479 |
| 2039 | 311,237 | 101,804,600 |
| 2038 | 306,029 | 99,370,760 |
| 2037 | 300,834 | 96,974,485 |
| 2036 | 295,584 | 94,592,848 |
| 2035 | 290,361 | 92,248,476 |
| 2034 | 285,145 | 89,920,872 |
| 2033 | 279,952 | 87,646,627 |
| 2032 | 274,798 | 85,401,853 |
| 2031 | 269,704 | 83,172,579 |
| 2030 | 264,687 | 80,989,443 |
| 2029 | 259,670 | 78,830,947 |
| 2028 | 254,717 | 76,723,335 |
| 2027 | 249,827 | 74,639,948 |
| 2026 | 245,033 | 72,582,361 |
| 2025 | 240,254 | 70,545,865 |
| 2024 | 235,536 | 68,560,157 |
| 2023 | 230,871 | 66,617,606 |
| 2022 | 226,305 | 64,711,821 |
| 2021 | 221,961 | 62,830,412 |
| 2020 | 217,435 | 60,972,798 |
| 2019 | 213,392 | 59,174,891 |
| 2018 | 210,187 | 57,437,145 |
| 2017 | 206,970 | 55,652,890 |
| 2016 | 203,689 | 53,824,013 |
| 2015 | 200,291 | 52,020,962 |
| 2014 | 196,767 | 50,351,512 |
| 2013 | 193,148 | 48,824,128 |
| 2012 | 189,439 | 47,374,260 |
| 2011 | 185,649 | 46,029,367 |
| 2010 | 181,802 | 44,758,488 |
| 2009 | 177,853 | 43,633,982 |
| 2008 | 173,793 | 42,570,728 |
| 2007 | 169,700 | 41,435,512 |
| 2006 | 165,638 | 40,294,902 |
| 2005 | 161,639 | 39,182,076 |
| 2004 | 157,705 | 38,109,668 |
| 2003 | 153,814 | 37,089,555 |
| 2002 | 149,922 | 36,121,304 |
| 2001 | 146,375 | 35,198,299 |
| 2000 | 144,018 | 34,260,139 |
| 1999 | 142,442 | 33,300,330 |
| 1998 | 140,751 | 32,420,458 |
| 1997 | 138,922 | 31,578,089 |
| 1996 | 136,962 | 30,945,762 |
| 1995 | 134,895 | 30,383,497 |
| 1994 | 132,732 | 29,442,356 |
| 1993 | 130,467 | 28,332,692 |
| 1992 | 128,110 | 27,457,588 |
| 1991 | 125,697 | 26,780,436 |
| 1990 | 122,980 | 26,110,207 |
| 1989 | 119,979 | 25,438,759 |
| 1988 | 116,939 | 24,769,686 |
| 1987 | 113,919 | 24,030,378 |
| 1986 | 111,150 | 23,258,959 |
| 1985 | 108,658 | 22,501,693 |
| 1984 | 106,394 | 21,779,066 |
| 1983 | 104,380 | 21,079,874 |
| 1982 | 102,508 | 20,398,571 |
| 1981 | 100,615 | 19,784,703 |
| 1980 | 98,544 | 19,189,769 |
| 1979 | 96,252 | 18,592,038 |
| 1978 | 93,794 | 17,976,566 |
| 1977 | 91,301 | 17,352,929 |
| 1976 | 88,922 | 16,736,211 |
| 1975 | 86,708 | 16,138,361 |
| 1974 | 84,672 | 15,561,630 |
| 1973 | 82,798 | 15,010,101 |
| 1972 | 81,041 | 14,479,308 |
| 1971 | 79,330 | 13,971,451 |
| 1970 | 77,626 | 13,492,677 |
| 1969 | 76,083 | 13,036,700 |
| 1968 | 74,765 | 12,602,076 |
| 1967 | 73,596 | 12,200,109 |
| 1966 | 72,576 | 11,827,459 |
| 1965 | 71,680 | 11,470,728 |
| 1964 | 70,865 | 11,127,826 |
| 1963 | 70,112 | 10,799,528 |
| 1962 | 69,403 | 10,487,756 |
| 1961 | 68,707 | 10,187,886 |
| 1960 | 68,012 | 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/sao-tome-and-principe/tanzania | CC BY 
From 2006 to 2016, the population of Sao Tome and Principe increased by 38,051 people (a 23% growth), while Tanzania gained 13,529,111 people (a 33.6% growth).
For the next 10 years, from 2016 to 2026, Sao Tome and Principe gained 43,806 people (a 21.5% growth), while Tanzania's population increased by 19,815,250 people (a 36.8% growth).
Sao Tome and Principe was ranked 178th most populous country in 2006 and is 176th 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) Sao Tome and Principe's population will grow by 48% to 366,347 people with a rank change from 176th to 175th. The population of Tanzania will increase by 76.7% to 130,145,345 people and rank change from 20th to 15th.
Sao Tome and Principe is projected to reach its peak in 2100 at 539K people compared to the peak of 265M people in 2100 for Tanzania.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Sao Tome
|
Tanzania
|
|
| 2100 | 0.26% | 0.89% |
| 2099 | 0.29% | 0.9% |
| 2098 | 0.31% | 0.93% |
| 2097 | 0.33% | 0.94% |
| 2096 | 0.33% | 0.96% |
| 2095 | 0.36% | 0.97% |
| 2094 | 0.38% | 1% |
| 2093 | 0.41% | 1.02% |
| 2092 | 0.42% | 1.05% |
| 2091 | 0.45% | 1.06% |
| 2090 | 0.46% | 1.08% |
| 2089 | 0.49% | 1.11% |
| 2088 | 0.49% | 1.13% |
| 2087 | 0.5% | 1.16% |
| 2086 | 0.53% | 1.18% |
| 2085 | 0.55% | 1.19% |
| 2084 | 0.58% | 1.21% |
| 2083 | 0.59% | 1.23% |
| 2082 | 0.61% | 1.25% |
| 2081 | 0.65% | 1.28% |
| 2080 | 0.66% | 1.31% |
| 2079 | 0.68% | 1.33% |
| 2078 | 0.72% | 1.35% |
| 2077 | 0.73% | 1.38% |
| 2076 | 0.75% | 1.4% |
| 2075 | 0.77% | 1.43% |
| 2074 | 0.78% | 1.45% |
| 2073 | 0.81% | 1.47% |
| 2072 | 0.83% | 1.5% |
| 2071 | 0.87% | 1.53% |
| 2070 | 0.91% | 1.55% |
| 2069 | 0.91% | 1.57% |
| 2068 | 0.95% | 1.6% |
| 2067 | 0.98% | 1.62% |
| 2066 | 0.98% | 1.68% |
| 2065 | 1.03% | 1.69% |
| 2064 | 1.04% | 1.71% |
| 2063 | 1.07% | 1.74% |
| 2062 | 1.08% | 1.76% |
| 2061 | 1.11% | 1.78% |
| 2060 | 1.11% | 1.81% |
| 2059 | 1.13% | 1.84% |
| 2058 | 1.15% | 1.87% |
| 2057 | 1.16% | 1.92% |
| 2056 | 1.2% | 1.94% |
| 2055 | 1.22% | 1.95% |
| 2054 | 1.24% | 1.97% |
| 2053 | 1.26% | 2% |
| 2052 | 1.3% | 2.03% |
| 2051 | 1.31% | 2.07% |
| 2050 | 1.33% | 2.09% |
| 2049 | 1.36% | 2.14% |
| 2048 | 1.39% | 2.18% |
| 2047 | 1.43% | 2.21% |
| 2046 | 1.48% | 2.23% |
| 2045 | 1.5% | 2.26% |
| 2044 | 1.53% | 2.28% |
| 2043 | 1.55% | 2.32% |
| 2042 | 1.57% | 2.34% |
| 2041 | 1.62% | 2.37% |
| 2040 | 1.66% | 2.41% |
| 2039 | 1.7% | 2.45% |
| 2038 | 1.73% | 2.47% |
| 2037 | 1.78% | 2.52% |
| 2036 | 1.8% | 2.54% |
| 2035 | 1.83% | 2.59% |
| 2034 | 1.85% | 2.59% |
| 2033 | 1.88% | 2.63% |
| 2032 | 1.89% | 2.68% |
| 2031 | 1.9% | 2.7% |
| 2030 | 1.93% | 2.74% |
| 2029 | 1.94% | 2.75% |
| 2028 | 1.96% | 2.79% |
| 2027 | 1.96% | 2.83% |
| 2026 | 1.99% | 2.89% |
| 2025 | 2% | 2.9% |
| 2024 | 2.02% | 2.92% |
| 2023 | 2.02% | 2.95% |
| 2022 | 1.96% | 2.99% |
| 2021 | 2.08% | 3.05% |
| 2020 | 1.89% | 3.04% |
| 2019 | 1.52% | 3.03% |
| 2018 | 1.55% | 3.21% |
| 2017 | 1.61% | 3.4% |
| 2016 | 1.7% | 3.47% |
| 2015 | 1.79% | 3.32% |
| 2014 | 1.87% | 3.13% |
| 2013 | 1.96% | 3.06% |
| 2012 | 2.04% | 2.92% |
| 2011 | 2.12% | 2.84% |
| 2010 | 2.22% | 2.58% |
| 2009 | 2.34% | 2.5% |
| 2008 | 2.41% | 2.74% |
| 2007 | 2.45% | 2.83% |
| 2006 | 2.47% | 2.84% |
| 2005 | 2.49% | 2.81% |
| 2004 | 2.53% | 2.75% |
| 2003 | 2.6% | 2.68% |
| 2002 | 2.42% | 2.62% |
| 2001 | 1.64% | 2.74% |
| 2000 | 1.11% | 2.88% |
| 1999 | 1.2% | 2.71% |
| 1998 | 1.32% | 2.67% |
| 1997 | 1.43% | 2.04% |
| 1996 | 1.53% | 1.85% |
| 1995 | 1.63% | 3.2% |
| 1994 | 1.74% | 3.92% |
| 1993 | 1.84% | 3.19% |
| 1992 | 1.92% | 2.53% |
| 1991 | 2.21% | 2.57% |
| 1990 | 2.5% | 2.64% |
| 1989 | 2.6% | 2.7% |
| 1988 | 2.65% | 3.08% |
| 1987 | 2.49% | 3.32% |
| 1986 | 2.29% | 3.37% |
| 1985 | 2.13% | 3.32% |
| 1984 | 1.93% | 3.32% |
| 1983 | 1.83% | 3.34% |
| 1982 | 1.88% | 3.1% |
| 1981 | 2.1% | 3.1% |
| 1980 | 2.38% | 3.21% |
| 1979 | 2.62% | 3.42% |
| 1978 | 2.73% | 3.59% |
| 1977 | 2.68% | 3.68% |
| 1976 | 2.55% | 3.7% |
| 1975 | 2.4% | 3.71% |
| 1974 | 2.26% | 3.67% |
| 1973 | 2.17% | 3.67% |
| 1972 | 2.16% | 3.63% |
| 1971 | 2.2% | 3.55% |
| 1970 | 2.03% | 3.5% |
| 1969 | 1.76% | 3.45% |
| 1968 | 1.59% | 3.29% |
| 1967 | 1.41% | 3.15% |
| 1966 | 1.25% | 3.11% |
| 1965 | 1.15% | 3.08% |
| 1964 | 1.07% | 3.04% |
| 1963 | 1.02% | 2.97% |
| 1962 | 1.01% | 2.94% |
| 1961 | 1.02% | 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/sao-tome-and-principe/tanzania | CC BY
In 2025, the population of Sao Tome and Principe grew by 2%, while Tanzania's population grew by 2.9%.
Live population counters
|
Sao Tome
|
Tanzania
|
|
|---|---|---|
| Current population |
247495
|
73639263
|
| Population rank | 176/197 | 20/197 |
| Percent of world population | 0.003% | 0.89% |
| One net population change |
1.86 hours
|
15.9 seconds
|
| One birth every |
1.32 hours
|
13.2 seconds
|
| One death every |
6.73 hours
|
1.34 minutes
|
| Daily growth/decline | +13 | +5,440 |
| Annual growth/decline | +4,718 | +1,985,708 |
| Annual growth/decline rate | +2% | +2.9% |
| Population growth rate rank | 50/197 | 16/197 |
| One migration net change every |
13.5 hours
|
41.4 minutes
|
| Annual migration change | -650 | -12,730 |
| Net migration rank | 90/196 | 139/196 |
| Foreign-born residents | 1,955 | 462,371 |
| Foreign-born residents rank | 194/195 | 83/195 |
| Foreign-born share of population | 0.8% | 0.7% |
| Foreign-born share rank | 162/195 | 167/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Sao Tome
|
Tanzania
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | -650 | - | -12,730 |
| 2024 | 5,315 | -604 | 1,993,730 | -29,865 |
| 2023 | 5,221 | -592 | 1,960,623 | -39,388 |
| 2022 | 5,102 | -592 | 1,927,960 | -37,557 |
| 2021 | 4,954 | -782 | 1,880,137 | -7,704 |
| 2020 | 4,874 | 0 | 1,861,377 | -18,587 |
| 2019 | 4,932 | -1,716 | 1,816,669 | -63,602 |
| 2018 | 4,957 | -1,757 | 1,777,852 | -55,444 |
| 2017 | 5,007 | -1,779 | 1,726,909 | 119,142 |
| 2016 | 5,125 | -1,793 | 1,659,502 | 152,194 |
| 2015 | 5,269 | -1,809 | 1,592,882 | 201,495 |
| 2014 | 5,381 | -1,801 | 1,565,630 | -21,083 |
| 2013 | 5,449 | -1,787 | 1,509,008 | 1,241 |
| 2012 | 5,501 | -1,739 | 1,439,325 | -49,875 |
| 2011 | 5,445 | -1,616 | 1,384,886 | -84,546 |
| 2010 | 5,391 | -1,529 | 1,363,477 | -122,020 |
| 2009 | 5,349 | -1,328 | 1,332,015 | -324,478 |
| 2008 | 5,297 | -1,203 | 1,303,728 | -184,816 |
| 2007 | 5,226 | -1,127 | 1,278,285 | -126,793 |
| 2006 | 5,057 | -1,031 | 1,257,927 | -128,231 |
| 2005 | 4,897 | -941 | 1,224,165 | -128,251 |
| 2004 | 4,810 | -894 | 1,175,379 | -126,490 |
| 2003 | 4,702 | -816 | 1,118,435 | -127,101 |
| 2002 | 4,591 | -690 | 1,063,195 | -118,047 |
| 2001 | 4,471 | -1,289 | 1,026,242 | -125,375 |
| 2000 | 4,334 | -2,798 | 985,185 | -9,701 |
| 1999 | 4,221 | -2,594 | 948,659 | -4,489 |
| 1998 | 4,120 | -2,364 | 920,806 | -105,184 |
| 1997 | 4,041 | -2,153 | 882,544 | -13,400 |
| 1996 | 3,993 | -1,974 | 868,524 | -473,007 |
| 1995 | 3,948 | -1,829 | 838,980 | -109,971 |
| 1994 | 3,860 | -1,644 | 803,953 | 349,348 |
| 1993 | 3,841 | -1,527 | 778,044 | 288,004 |
| 1992 | 3,822 | -1,432 | 767,961 | -83,825 |
| 1991 | 3,801 | -1,362 | 762,011 | -91,851 |
| 1990 | 3,719 | -727 | 750,825 | -80,529 |
| 1989 | 3,576 | -571 | 743,854 | -71,268 |
| 1988 | 3,544 | -465 | 736,551 | -71,012 |
| 1987 | 3,440 | -470 | 718,580 | 94,498 |
| 1986 | 3,180 | -614 | 705,677 | 24,101 |
| 1985 | 3,242 | -828 | 697,867 | 86,864 |
| 1984 | 3,163 | -1,041 | 687,435 | -26,938 |
| 1983 | 3,100 | -1,203 | 679,720 | 58,161 |
| 1982 | 3,047 | -1,203 | 662,627 | -37,883 |
| 1981 | 3,015 | -1,067 | 645,496 | -42,485 |
| 1980 | 2,965 | -770 | 629,444 | -42,588 |
| 1979 | 2,893 | -491 | 613,388 | -4,792 |
| 1978 | 2,800 | -279 | 595,024 | 27,307 |
| 1977 | 2,705 | -255 | 574,938 | 49,997 |
| 1976 | 2,608 | -302 | 553,617 | 54,875 |
| 1975 | 2,515 | -392 | 533,906 | 53,290 |
| 1974 | 2,422 | -474 | 515,152 | 51,127 |
| 1973 | 2,329 | -525 | 488,429 | 48,363 |
| 1972 | 2,232 | -517 | 467,305 | 57,489 |
| 1971 | 2,127 | -430 | 449,014 | 41,900 |
| 1970 | 1,980 | -279 | 427,988 | 38,635 |
| 1969 | 1,862 | -469 | 408,322 | 37,006 |
| 1968 | 1,767 | -520 | 389,467 | 34,455 |
| 1967 | 1,693 | -606 | 374,763 | 5,265 |
| 1966 | 1,642 | -688 | 360,229 | 5,049 |
| 1965 | 1,611 | -765 | 343,456 | 4,742 |
| 1964 | 1,600 | -819 | 328,527 | 9,090 |
| 1963 | 1,609 | -886 | 314,644 | 4,333 |
| 1962 | 1,625 | -927 | 300,663 | 3,916 |
| 1961 | 1,657 | -960 | 286,839 | 8,338 |
| 1960 | 1,547 | -860 | 275,814 | 1,946 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/sao-tome-and-principe/tanzania | CC BY
Over the last 10 years, 81.6% of the population change in Sao Tome and Principe is from natural causes (a gain of 50,756 people) and 18.4% is from migration (a loss of 11,424 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, 1,955 residents or 0.8% of the population were not native-born in Sao Tome and Principe, compared to 462,371 people or 0.7% in Tanzania.
Biggest cities by population
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Population differences between Sao Tome and Principe and Tanzania
|
Sao Tome
|
Tanzania
|
|
|---|---|---|
| Life expectancy | 70.3 years | 67.6 years |
| Average age | 25.2 years | 22.8 years |
| Median age | 20.5 years | 18.5 years |
| Male:Female ratio | 49.7:50.3 | 49.6:50.4 |
| Fertility rate | 3.6 births per woman | 4.54 births per woman |
| Population density | 661 ppl/mi² | 212.2 ppl/mi² |
Population map with other countries
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/sao-tome-and-principe/tanzania | CC BY
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Data sources:
- World Bank | Health (1960–2025, retrieved 2026-07-08)
- United Nations | World Population Prospects (1960–2100, retrieved 2026-07-08)
- U.S. Census Bureau (1960–2025, retrieved 2026-07-08)
- Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08)
- Wikidata (2026, retrieved 2026-07-08)
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