The latest officially reported population of Sierra Leone was 8,819,794 in 2025 vs 70,545,865 people in Tanzania in 2025. In 2026, based on the adjusted UN estimation, the current Sierra Leone's population is 9,090,531 people compared to 73,639,263 in Tanzania.
Population statistics:
- Tanzania's population is 8.1 times bigger than Sierra Leone's.
- Sierra Leone is ranked the 100th most populous country in the world, while Tanzania is the 20th.
- The countries together account for 1% of the world: 0.11% for Sierra Leone vs 0.89% for Tanzania.
- For the last 10 years, Sierra Leone has had an average growth rate of +2.29% per year vs +3.11% in Tanzania.
- Since 2006, the population of Sierra Leone has increased from 5.62M people to 9.09M (61.6% growth), while Tanzania has grown from 40.3M to 73.6M (82.8% growth).
Sierra Leone vs Tanzania: population by year and forecast
| Year | Population | |
|---|---|---|
Sierra Leone
|
Tanzania
|
|
| 2100 | 16,107,087 | 265,471,550 |
| 2099 | 16,121,940 | 263,137,702 |
| 2098 | 16,135,035 | 260,784,676 |
| 2097 | 16,149,905 | 258,387,890 |
| 2096 | 16,160,672 | 255,972,277 |
| 2095 | 16,169,304 | 253,543,248 |
| 2094 | 16,168,902 | 251,095,452 |
| 2093 | 16,173,609 | 248,605,184 |
| 2092 | 16,170,778 | 246,083,651 |
| 2091 | 16,163,901 | 243,533,968 |
| 2090 | 16,154,165 | 240,979,094 |
| 2089 | 16,142,526 | 238,393,867 |
| 2088 | 16,128,775 | 235,775,056 |
| 2087 | 16,112,585 | 233,145,231 |
| 2086 | 16,085,549 | 230,474,072 |
| 2085 | 16,064,212 | 227,778,580 |
| 2084 | 16,040,563 | 225,090,075 |
| 2083 | 16,006,923 | 222,400,079 |
| 2082 | 15,970,872 | 219,697,321 |
| 2081 | 15,930,880 | 216,974,796 |
| 2080 | 15,892,665 | 214,235,505 |
| 2079 | 15,850,728 | 211,466,096 |
| 2078 | 15,801,450 | 208,688,171 |
| 2077 | 15,750,408 | 205,898,494 |
| 2076 | 15,695,310 | 203,086,766 |
| 2075 | 15,635,345 | 200,278,383 |
| 2074 | 15,580,279 | 197,449,196 |
| 2073 | 15,512,655 | 194,624,081 |
| 2072 | 15,442,481 | 191,805,820 |
| 2071 | 15,370,747 | 188,974,004 |
| 2070 | 15,293,426 | 186,134,634 |
| 2069 | 15,212,664 | 183,293,747 |
| 2068 | 15,124,069 | 180,458,385 |
| 2067 | 15,028,190 | 177,622,538 |
| 2066 | 14,931,295 | 174,786,430 |
| 2065 | 14,833,794 | 171,897,059 |
| 2064 | 14,736,872 | 169,048,435 |
| 2063 | 14,638,180 | 166,202,091 |
| 2062 | 14,525,736 | 163,354,473 |
| 2061 | 14,420,068 | 160,521,858 |
| 2060 | 14,307,451 | 157,707,240 |
| 2059 | 14,194,972 | 154,905,240 |
| 2058 | 14,077,124 | 152,106,040 |
| 2057 | 13,957,197 | 149,311,257 |
| 2056 | 13,832,494 | 146,505,507 |
| 2055 | 13,702,508 | 143,722,840 |
| 2054 | 13,576,231 | 140,970,467 |
| 2053 | 13,440,929 | 138,249,490 |
| 2052 | 13,299,910 | 135,540,803 |
| 2051 | 13,152,910 | 132,838,721 |
| 2050 | 13,006,688 | 130,145,345 |
| 2049 | 12,863,637 | 127,483,126 |
| 2048 | 12,712,671 | 124,809,212 |
| 2047 | 12,566,944 | 122,146,647 |
| 2046 | 12,411,042 | 119,511,124 |
| 2045 | 12,254,651 | 116,903,642 |
| 2044 | 12,088,895 | 114,318,843 |
| 2043 | 11,928,393 | 111,765,580 |
| 2042 | 11,767,372 | 109,231,423 |
| 2041 | 11,599,942 | 106,738,458 |
| 2040 | 11,428,331 | 104,262,479 |
| 2039 | 11,259,845 | 101,804,600 |
| 2038 | 11,097,180 | 99,370,760 |
| 2037 | 10,928,754 | 96,974,485 |
| 2036 | 10,757,928 | 94,592,848 |
| 2035 | 10,582,918 | 92,248,476 |
| 2034 | 10,411,088 | 89,920,872 |
| 2033 | 10,238,503 | 87,646,627 |
| 2032 | 10,059,929 | 85,401,853 |
| 2031 | 9,881,109 | 83,172,579 |
| 2030 | 9,705,485 | 80,989,443 |
| 2029 | 9,529,493 | 78,830,947 |
| 2028 | 9,358,412 | 76,723,335 |
| 2027 | 9,177,288 | 74,639,948 |
| 2026 | 8,998,902 | 72,582,361 |
| 2025 | 8,819,794 | 70,545,865 |
| 2024 | 8,642,022 | 68,560,157 |
| 2023 | 8,460,512 | 66,617,606 |
| 2022 | 8,276,807 | 64,711,821 |
| 2021 | 8,094,602 | 62,830,412 |
| 2020 | 7,912,558 | 60,972,798 |
| 2019 | 7,731,991 | 59,174,891 |
| 2018 | 7,554,563 | 57,437,145 |
| 2017 | 7,379,299 | 55,652,890 |
| 2016 | 7,205,328 | 53,824,013 |
| 2015 | 7,037,655 | 52,020,962 |
| 2014 | 6,876,385 | 50,351,512 |
| 2013 | 6,714,051 | 48,824,128 |
| 2012 | 6,551,080 | 47,374,260 |
| 2011 | 6,387,251 | 46,029,367 |
| 2010 | 6,222,714 | 44,758,488 |
| 2009 | 6,055,646 | 43,633,982 |
| 2008 | 5,894,722 | 42,570,728 |
| 2007 | 5,749,352 | 41,435,512 |
| 2006 | 5,624,466 | 40,294,902 |
| 2005 | 5,501,712 | 39,182,076 |
| 2004 | 5,355,717 | 38,109,668 |
| 2003 | 5,177,687 | 37,089,555 |
| 2002 | 4,971,435 | 36,121,304 |
| 2001 | 4,692,716 | 35,198,299 |
| 2000 | 4,423,611 | 34,260,139 |
| 1999 | 4,318,043 | 33,300,330 |
| 1998 | 4,295,785 | 32,420,458 |
| 1997 | 4,253,716 | 31,578,089 |
| 1996 | 4,199,210 | 30,945,762 |
| 1995 | 4,179,179 | 30,383,497 |
| 1994 | 4,173,105 | 29,442,356 |
| 1993 | 4,157,130 | 28,332,692 |
| 1992 | 4,166,366 | 27,457,588 |
| 1991 | 4,246,267 | 26,780,436 |
| 1990 | 4,196,828 | 26,110,207 |
| 1989 | 4,034,037 | 25,438,759 |
| 1988 | 3,934,517 | 24,769,686 |
| 1987 | 3,829,718 | 24,030,378 |
| 1986 | 3,728,380 | 23,258,959 |
| 1985 | 3,638,438 | 22,501,693 |
| 1984 | 3,558,758 | 21,779,066 |
| 1983 | 3,481,646 | 21,079,874 |
| 1982 | 3,408,183 | 20,398,571 |
| 1981 | 3,338,940 | 19,784,703 |
| 1980 | 3,272,089 | 19,189,769 |
| 1979 | 3,207,499 | 18,592,038 |
| 1978 | 3,145,517 | 17,976,566 |
| 1977 | 3,085,354 | 17,352,929 |
| 1976 | 3,028,820 | 16,736,211 |
| 1975 | 2,974,657 | 16,138,361 |
| 1974 | 2,920,459 | 15,561,630 |
| 1973 | 2,866,955 | 15,010,101 |
| 1972 | 2,814,388 | 14,479,308 |
| 1971 | 2,763,222 | 13,971,451 |
| 1970 | 2,712,286 | 13,492,677 |
| 1969 | 2,661,365 | 13,036,700 |
| 1968 | 2,611,532 | 12,602,076 |
| 1967 | 2,562,384 | 12,200,109 |
| 1966 | 2,514,638 | 11,827,459 |
| 1965 | 2,468,666 | 11,470,728 |
| 1964 | 2,424,390 | 11,127,826 |
| 1963 | 2,382,258 | 10,799,528 |
| 1962 | 2,342,242 | 10,487,756 |
| 1961 | 2,304,227 | 10,187,886 |
| 1960 | 2,268,356 | 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/sierra-leone/tanzania | CC BY 
From 2006 to 2016, the population of Sierra Leone increased by 1,580,862 people (a 28.1% growth), while Tanzania gained 13,529,111 people (a 33.6% growth).
For the next 10 years, from 2016 to 2026, Sierra Leone gained 1,885,203 people (a 26.2% growth), while Tanzania's population increased by 19,815,250 people (a 36.8% growth).
Sierra Leone was ranked 105th most populous country in 2006 and is 100th 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) Sierra Leone's population will grow by 43.1% to 13,006,688 people with a rank change from 100th to 91st. The population of Tanzania will increase by 76.7% to 130,145,345 people and rank change from 20th to 15th.
Sierra Leone is projected to reach its peak in 2093 at 16.2M people compared to the peak of 265M people in 2100 for Tanzania.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Sierra Leone
|
Tanzania
|
|
| 2100 | -0.09% | 0.89% |
| 2099 | -0.08% | 0.9% |
| 2098 | -0.09% | 0.93% |
| 2097 | -0.07% | 0.94% |
| 2096 | -0.05% | 0.96% |
| 2095 | 0.002% | 0.97% |
| 2094 | -0.03% | 1% |
| 2093 | 0.02% | 1.02% |
| 2092 | 0.04% | 1.05% |
| 2091 | 0.06% | 1.06% |
| 2090 | 0.07% | 1.08% |
| 2089 | 0.09% | 1.11% |
| 2088 | 0.1% | 1.13% |
| 2087 | 0.17% | 1.16% |
| 2086 | 0.13% | 1.18% |
| 2085 | 0.15% | 1.19% |
| 2084 | 0.21% | 1.21% |
| 2083 | 0.23% | 1.23% |
| 2082 | 0.25% | 1.25% |
| 2081 | 0.24% | 1.28% |
| 2080 | 0.26% | 1.31% |
| 2079 | 0.31% | 1.33% |
| 2078 | 0.32% | 1.35% |
| 2077 | 0.35% | 1.38% |
| 2076 | 0.38% | 1.4% |
| 2075 | 0.35% | 1.43% |
| 2074 | 0.44% | 1.45% |
| 2073 | 0.45% | 1.47% |
| 2072 | 0.47% | 1.5% |
| 2071 | 0.51% | 1.53% |
| 2070 | 0.53% | 1.55% |
| 2069 | 0.59% | 1.57% |
| 2068 | 0.64% | 1.6% |
| 2067 | 0.65% | 1.62% |
| 2066 | 0.66% | 1.68% |
| 2065 | 0.66% | 1.69% |
| 2064 | 0.67% | 1.71% |
| 2063 | 0.77% | 1.74% |
| 2062 | 0.73% | 1.76% |
| 2061 | 0.79% | 1.78% |
| 2060 | 0.79% | 1.81% |
| 2059 | 0.84% | 1.84% |
| 2058 | 0.86% | 1.87% |
| 2057 | 0.9% | 1.92% |
| 2056 | 0.95% | 1.94% |
| 2055 | 0.93% | 1.95% |
| 2054 | 1.01% | 1.97% |
| 2053 | 1.06% | 2% |
| 2052 | 1.12% | 2.03% |
| 2051 | 1.12% | 2.07% |
| 2050 | 1.11% | 2.09% |
| 2049 | 1.19% | 2.14% |
| 2048 | 1.16% | 2.18% |
| 2047 | 1.26% | 2.21% |
| 2046 | 1.28% | 2.23% |
| 2045 | 1.37% | 2.26% |
| 2044 | 1.35% | 2.28% |
| 2043 | 1.37% | 2.32% |
| 2042 | 1.44% | 2.34% |
| 2041 | 1.5% | 2.37% |
| 2040 | 1.5% | 2.41% |
| 2039 | 1.47% | 2.45% |
| 2038 | 1.54% | 2.47% |
| 2037 | 1.59% | 2.52% |
| 2036 | 1.65% | 2.54% |
| 2035 | 1.65% | 2.59% |
| 2034 | 1.69% | 2.59% |
| 2033 | 1.78% | 2.63% |
| 2032 | 1.81% | 2.68% |
| 2031 | 1.81% | 2.7% |
| 2030 | 1.85% | 2.74% |
| 2029 | 1.83% | 2.75% |
| 2028 | 1.97% | 2.79% |
| 2027 | 1.98% | 2.83% |
| 2026 | 2.03% | 2.89% |
| 2025 | 2.06% | 2.9% |
| 2024 | 2.15% | 2.92% |
| 2023 | 2.22% | 2.95% |
| 2022 | 2.25% | 2.99% |
| 2021 | 2.3% | 3.05% |
| 2020 | 2.34% | 3.04% |
| 2019 | 2.35% | 3.03% |
| 2018 | 2.38% | 3.21% |
| 2017 | 2.41% | 3.4% |
| 2016 | 2.38% | 3.47% |
| 2015 | 2.35% | 3.32% |
| 2014 | 2.42% | 3.13% |
| 2013 | 2.49% | 3.06% |
| 2012 | 2.56% | 2.92% |
| 2011 | 2.64% | 2.84% |
| 2010 | 2.76% | 2.58% |
| 2009 | 2.73% | 2.5% |
| 2008 | 2.53% | 2.74% |
| 2007 | 2.22% | 2.83% |
| 2006 | 2.23% | 2.84% |
| 2005 | 2.73% | 2.81% |
| 2004 | 3.44% | 2.75% |
| 2003 | 4.15% | 2.68% |
| 2002 | 5.94% | 2.62% |
| 2001 | 6.08% | 2.74% |
| 2000 | 2.44% | 2.88% |
| 1999 | 0.52% | 2.71% |
| 1998 | 0.99% | 2.67% |
| 1997 | 1.3% | 2.04% |
| 1996 | 0.48% | 1.85% |
| 1995 | 0.15% | 3.2% |
| 1994 | 0.38% | 3.92% |
| 1993 | -0.22% | 3.19% |
| 1992 | -1.88% | 2.53% |
| 1991 | 1.18% | 2.57% |
| 1990 | 4.04% | 2.64% |
| 1989 | 2.53% | 2.7% |
| 1988 | 2.74% | 3.08% |
| 1987 | 2.72% | 3.32% |
| 1986 | 2.47% | 3.37% |
| 1985 | 2.24% | 3.32% |
| 1984 | 2.21% | 3.32% |
| 1983 | 2.16% | 3.34% |
| 1982 | 2.07% | 3.1% |
| 1981 | 2.04% | 3.1% |
| 1980 | 2.01% | 3.21% |
| 1979 | 1.97% | 3.42% |
| 1978 | 1.95% | 3.59% |
| 1977 | 1.87% | 3.68% |
| 1976 | 1.82% | 3.7% |
| 1975 | 1.86% | 3.71% |
| 1974 | 1.87% | 3.67% |
| 1973 | 1.87% | 3.67% |
| 1972 | 1.85% | 3.63% |
| 1971 | 1.88% | 3.55% |
| 1970 | 1.91% | 3.5% |
| 1969 | 1.91% | 3.45% |
| 1968 | 1.92% | 3.29% |
| 1967 | 1.9% | 3.15% |
| 1966 | 1.86% | 3.11% |
| 1965 | 1.83% | 3.08% |
| 1964 | 1.77% | 3.04% |
| 1963 | 1.71% | 2.97% |
| 1962 | 1.65% | 2.94% |
| 1961 | 1.58% | 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/sierra-leone/tanzania | CC BY
In 2025, the population of Sierra Leone grew by 2.06%, while Tanzania's population grew by 2.9%.
Live population counters
|
Sierra Leone
|
Tanzania
|
|
|---|---|---|
| Current population |
9090531
|
73639263
|
| Population rank | 100/197 | 20/197 |
| Percent of world population | 0.11% | 0.89% |
| One net population change |
2.96 minutes
|
15.9 seconds
|
| One birth every |
2.02 minutes
|
13.2 seconds
|
| One death every |
7.41 minutes
|
1.34 minutes
|
| Daily growth/decline | +487 | +5,440 |
| Annual growth/decline | +177,772 | +1,985,708 |
| Annual growth/decline rate | +2.06% | +2.9% |
| Population growth rate rank | 47/197 | 16/197 |
| One migration net change every |
46.6 minutes
|
41.4 minutes
|
| Annual migration change | -11,309 | -12,730 |
| Net migration rank | 136/196 | 139/196 |
| Foreign-born residents | 49,997 | 462,371 |
| Foreign-born residents rank | 151/195 | 83/195 |
| Foreign-born share of population | 0.6% | 0.7% |
| Foreign-born share rank | 174/195 | 167/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Sierra Leone
|
Tanzania
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | -11,309 | - | -12,730 |
| 2024 | 189,234 | -11,000 | 1,993,730 | -29,865 |
| 2023 | 188,788 | -4,000 | 1,960,623 | -39,388 |
| 2022 | 186,625 | -4,000 | 1,927,960 | -37,557 |
| 2021 | 183,326 | -1,544 | 1,880,137 | -7,704 |
| 2020 | 181,015 | 1,292 | 1,861,377 | -18,587 |
| 2019 | 181,068 | -2,238 | 1,816,669 | -63,602 |
| 2018 | 178,772 | -2,741 | 1,777,852 | -55,444 |
| 2017 | 173,259 | 1,234 | 1,726,909 | 119,142 |
| 2016 | 168,784 | 4,657 | 1,659,502 | 152,194 |
| 2015 | 162,275 | -356 | 1,592,882 | 201,495 |
| 2014 | 160,137 | 485 | 1,565,630 | -21,083 |
| 2013 | 161,265 | 2,773 | 1,509,008 | 1,241 |
| 2012 | 160,915 | 988 | 1,439,325 | -49,875 |
| 2011 | 158,858 | 6,895 | 1,384,886 | -84,546 |
| 2010 | 155,338 | 7,983 | 1,363,477 | -122,020 |
| 2009 | 152,669 | 18,145 | 1,332,015 | -324,478 |
| 2008 | 149,855 | 1,182 | 1,303,728 | -184,816 |
| 2007 | 145,740 | -6,042 | 1,278,285 | -126,793 |
| 2006 | 144,127 | -34,052 | 1,257,927 | -128,231 |
| 2005 | 137,234 | -1,805 | 1,224,165 | -128,251 |
| 2004 | 132,661 | 23,897 | 1,175,379 | -126,490 |
| 2003 | 130,312 | 69,185 | 1,118,435 | -127,101 |
| 2002 | 126,429 | 86,578 | 1,063,195 | -118,047 |
| 2001 | 116,647 | 227,791 | 1,026,242 | -125,375 |
| 2000 | 110,754 | 83,013 | 985,185 | -9,701 |
| 1999 | 102,295 | -84,926 | 948,659 | -4,489 |
| 1998 | 103,906 | -76,766 | 920,806 | -105,184 |
| 1997 | 105,433 | -48,437 | 882,544 | -13,400 |
| 1996 | 104,140 | -52,110 | 868,524 | -473,007 |
| 1995 | 100,885 | -112,857 | 838,980 | -109,971 |
| 1994 | 101,486 | -77,371 | 803,953 | 349,348 |
| 1993 | 103,317 | -95,476 | 778,044 | 288,004 |
| 1992 | 103,251 | -129,565 | 767,961 | -83,825 |
| 1991 | 105,477 | -238,965 | 762,011 | -91,851 |
| 1990 | 100,778 | 131,587 | 750,825 | -80,529 |
| 1989 | 98,298 | -5,079 | 743,854 | -71,268 |
| 1988 | 96,344 | 9,470 | 736,551 | -71,012 |
| 1987 | 94,235 | 9,558 | 718,580 | 94,498 |
| 1986 | 90,902 | 7,992 | 705,677 | 24,101 |
| 1985 | 88,869 | -7,873 | 697,867 | 86,864 |
| 1984 | 87,072 | -8,708 | 687,435 | -26,938 |
| 1983 | 84,628 | -8,783 | 679,720 | 58,161 |
| 1982 | 82,457 | -11,379 | 662,627 | -37,883 |
| 1981 | 80,111 | -12,699 | 645,496 | -42,485 |
| 1980 | 77,932 | -11,641 | 629,444 | -42,588 |
| 1979 | 75,992 | -13,095 | 613,388 | -4,792 |
| 1978 | 74,130 | -13,073 | 595,024 | 27,307 |
| 1977 | 71,663 | -12,399 | 574,938 | 49,997 |
| 1976 | 69,506 | -15,686 | 553,617 | 54,875 |
| 1975 | 67,560 | -13,058 | 533,906 | 53,290 |
| 1974 | 65,357 | -11,473 | 515,152 | 51,127 |
| 1973 | 62,443 | -9,322 | 488,429 | 48,363 |
| 1972 | 60,279 | -8,267 | 467,305 | 57,489 |
| 1971 | 58,484 | -8,162 | 449,014 | 41,900 |
| 1970 | 56,513 | -4,957 | 427,988 | 38,635 |
| 1969 | 54,768 | -4,485 | 408,322 | 37,006 |
| 1968 | 53,126 | -3,743 | 389,467 | 34,455 |
| 1967 | 51,734 | -2,819 | 374,763 | 5,265 |
| 1966 | 49,486 | -2,911 | 360,229 | 5,049 |
| 1965 | 47,223 | -1,851 | 343,456 | 4,742 |
| 1964 | 45,487 | -2,308 | 328,527 | 9,090 |
| 1963 | 43,569 | -2,480 | 314,644 | 4,333 |
| 1962 | 41,603 | -2,658 | 300,663 | 3,916 |
| 1961 | 40,022 | -2,947 | 286,839 | 8,338 |
| 1960 | 38,192 | -3,528 | 275,814 | 1,946 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/sierra-leone/tanzania | CC BY
Over the last 10 years, 99% of the population change in Sierra Leone is from natural causes (a gain of 1,793,146 people) and 1.03% is from migration (a loss of 18,696 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, 49,997 residents or 0.6% of the population were not native-born in Sierra Leone, compared to 462,371 people or 0.7% in Tanzania.
Biggest cities by population
|
Sierra Leone
|
|
|---|---|
| City | Population |
| Freetown | 951K |
| Bo | 234K |
| Kenema | 188K |
|
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 differences between Sierra Leone and Tanzania
|
Sierra Leone
|
Tanzania
|
|
|---|---|---|
| Life expectancy | 62.3 years | 67.6 years |
| Average age | 24.6 years | 22.8 years |
| Median age | 20.7 years | 18.5 years |
| Male:Female ratio | 49.9:50.1 | 49.6:50.4 |
| Fertility rate | 3.7 births per woman | 4.54 births per woman |
| Population density | 323 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/sierra-leone/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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