Skip to content

Population in Sierra Leone compared to Tanzania: Trends, Charts, Rankings

Updated on by Georank team

The latest officially reported population of Sierra Leone was 8,642,022 in 2024 vs 68,560,157 people in Tanzania in 2024. In 2025, based on the adjusted UN estimation, the current Sierra Leone's population is 8,961,932 people compared to 72,166,806 in Tanzania.

Population statistics:

  • Tanzania's population is 8.05 times bigger than Sierra Leone's.
  • Sierra Leone is ranked the 102nd most populous country in the world, while Tanzania is the 20th.
  • The countries together account for 0.98% of the world: 0.11% for Sierra Leone vs 0.87% for Tanzania.
  • For the last 10 years, Sierra Leone has had an average growth rate of +2.32% per year vs +3.13% in Tanzania.
  • Since 2005, the population of Sierra Leone has increased from 5.5M people to 8.96M (62.9% growth), while Tanzania has grown from 39.2M to 72.2M (84.2% growth).
  • Sierra Leone is projected to reach its peak in 2092 at 16M people compared to the peak of 263M people in 2100 for Tanzania.

Sierra Leone vs Tanzania: live population counter

Sierra Leone Tanzania
Current population
8961932
72166806
Population rank 102/197 20/197
Percent of world population 0.11% 0.87%
One net population change
2.9 minutes
16.2 seconds
One birth every
2.03 minutes
13.4 seconds
One death every
7.5 minutes
1.36 minutes
One migration net change every
47.8 minutes
17.6 minutes
Annual migration change -11,000 -29,865
Daily growth/decline +497 +5,322
Annual growth/decline +181,510 +1,942,551
Annual growth/decline rate +2.15% +2.92%
Population growth rate rank 49/197 19/197

Sierra Leone and Tanzania: population history and growth rate by year chart

Sierra Leone
Population

Growth rate
Tanzania
Population

Growth rate
Year Population Growth rate
Sierra Leone Tanzania Sierra Leone Tanzania
1960 2,268,356 9,901,419 - -
1961 2,304,227 10,187,886 1.58% 2.89%
1962 2,342,242 10,487,756 1.65% 2.94%
1963 2,382,258 10,799,528 1.71% 2.97%
1964 2,424,390 11,127,826 1.77% 3.04%
1965 2,468,666 11,470,728 1.83% 3.08%
1966 2,514,638 11,827,459 1.86% 3.11%
1967 2,562,384 12,200,109 1.9% 3.15%
1968 2,611,532 12,602,076 1.92% 3.29%
1969 2,661,365 13,036,700 1.91% 3.45%
1970 2,712,286 13,492,677 1.91% 3.5%
1971 2,763,222 13,971,451 1.88% 3.55%
1972 2,814,388 14,479,308 1.85% 3.63%
1973 2,866,955 15,010,101 1.87% 3.67%
1974 2,920,459 15,561,630 1.87% 3.67%
1975 2,974,657 16,138,361 1.86% 3.71%
1976 3,028,820 16,736,211 1.82% 3.7%
1977 3,085,354 17,352,929 1.87% 3.68%
1978 3,145,517 17,976,566 1.95% 3.59%
1979 3,207,499 18,592,038 1.97% 3.42%
1980 3,272,089 19,189,769 2.01% 3.21%
1981 3,338,940 19,784,703 2.04% 3.1%
1982 3,408,183 20,398,571 2.07% 3.1%
1983 3,481,646 21,079,874 2.16% 3.34%
1984 3,558,758 21,779,066 2.21% 3.32%
1985 3,638,438 22,501,693 2.24% 3.32%
1986 3,728,380 23,258,959 2.47% 3.37%
1987 3,829,718 24,030,378 2.72% 3.32%
1988 3,934,517 24,769,686 2.74% 3.08%
1989 4,034,037 25,438,759 2.53% 2.7%
1990 4,196,828 26,110,207 4.04% 2.64%
1991 4,246,267 26,780,436 1.18% 2.57%
1992 4,166,366 27,457,588 -1.88% 2.53%
1993 4,157,130 28,332,692 -0.22% 3.19%
1994 4,173,105 29,442,356 0.38% 3.92%
1995 4,179,179 30,383,497 0.15% 3.2%
1996 4,199,210 30,945,762 0.48% 1.85%
1997 4,253,716 31,578,089 1.3% 2.04%
1998 4,295,785 32,420,458 0.99% 2.67%
1999 4,318,043 33,300,330 0.52% 2.71%
2000 4,423,611 34,260,139 2.44% 2.88%
2001 4,692,716 35,198,299 6.08% 2.74%
2002 4,971,435 36,121,304 5.94% 2.62%
2003 5,177,687 37,089,555 4.15% 2.68%
2004 5,355,717 38,109,668 3.44% 2.75%
2005 5,501,712 39,182,076 2.73% 2.81%
2006 5,624,466 40,294,902 2.23% 2.84%
2007 5,749,352 41,435,512 2.22% 2.83%
2008 5,894,722 42,570,728 2.53% 2.74%
2009 6,055,646 43,633,982 2.73% 2.5%
2010 6,222,714 44,758,488 2.76% 2.58%
2011 6,387,251 46,029,367 2.64% 2.84%
2012 6,551,080 47,374,260 2.56% 2.92%
2013 6,714,051 48,824,128 2.49% 3.06%
2014 6,876,385 50,351,512 2.42% 3.13%
2015 7,037,655 52,020,962 2.35% 3.32%
2016 7,205,328 53,824,013 2.38% 3.47%
2017 7,379,299 55,652,890 2.41% 3.4%
2018 7,554,563 57,437,145 2.38% 3.21%
2019 7,731,991 59,174,891 2.35% 3.03%
2020 7,912,558 60,972,798 2.34% 3.04%
2021 8,094,602 62,830,412 2.3% 3.05%
2022 8,276,807 64,711,821 2.25% 2.99%
2023 8,460,512 66,617,606 2.22% 2.95%
2024 8,642,022 68,560,157 2.15% 2.92%
2025 8,819,789 70,545,858 2.06% 2.9%
2026 8,996,743 72,563,773 2.01% 2.86%
2027 9,174,695 74,604,804 1.98% 2.81%
2028 9,349,021 76,670,483 1.9% 2.77%
2029 9,520,811 78,773,192 1.84% 2.74%
2030 9,694,851 80,913,118 1.83% 2.72%
2031 9,870,295 83,087,927 1.81% 2.69%
2032 10,047,193 85,293,126 1.79% 2.65%
2033 10,221,006 87,520,491 1.73% 2.61%
2034 10,391,485 89,788,673 1.67% 2.59%
2035 10,563,163 92,091,418 1.65% 2.56%
2036 10,734,341 94,420,808 1.62% 2.53%
2037 10,902,263 96,775,766 1.56% 2.49%
2038 11,066,143 99,156,465 1.5% 2.46%
2039 11,230,060 101,567,525 1.48% 2.43%
2040 11,398,391 103,999,350 1.5% 2.39%
2041 11,566,213 106,448,475 1.47% 2.35%
2042 11,728,787 108,926,272 1.41% 2.33%
2043 11,887,934 111,433,788 1.36% 2.3%
2044 12,049,424 113,966,263 1.36% 2.27%
2045 12,208,872 116,525,463 1.32% 2.25%
2046 12,363,446 119,109,670 1.27% 2.22%
2047 12,512,739 121,721,018 1.21% 2.19%
2048 12,659,609 124,351,294 1.17% 2.16%
2049 12,805,136 126,981,394 1.15% 2.12%
2050 12,948,320 129,621,083 1.12% 2.08%

From 2005 to 2015, the population of Sierra Leone increased by 1,535,943 people (a 27.9% growth), while Tanzania gained 12,838,886 people (a 32.8% growth).

For the next 10 years, from 2015 to 2025, Sierra Leone gained 1,924,277 (a 27.3% growth), while Tanzania's population increased by 20,145,844 (a 38.7% growth).

Sierra Leone was ranked 106th most populous country in 2005 and is 102nd in 2025. Tanzania was ranked 31st in 2005 and ranked 20th now.

The UN's World Population Prospects forecasts that with changing growth rate trends in 25 years (in 2050) Sierra Leone's population will grow by 44.5% to 12,948,320 people with a rank change from 102nd to 91st. The population of Tanzania will increase by 79.6% to 129,621,083 people and rank change from 20th to 15th.

Biggest cities by population

Compare countries by 7 more topics

Population map with other countries

Population

Growth rate visualization in other countries

Growth rate

Population comparisons

Population vs Sierra Leone vs Tanzania
Afghanistan Compare Compare
Albania Compare Compare
Algeria Compare Compare
Andorra Compare Compare
Angola Compare Compare
Antigua Compare Compare
Argentina Compare Compare
Armenia Compare Compare
Australia Compare Compare
Austria Compare Compare
Azerbaijan Compare Compare
Bahamas Compare Compare
Bahrain Compare Compare
Bangladesh Compare Compare
Barbados Compare Compare
Belarus Compare Compare
Belgium Compare Compare
Belize Compare Compare
Benin Compare Compare
Bhutan Compare Compare
Bolivia Compare Compare
Bosnia Compare Compare
Botswana Compare Compare
Brazil Compare Compare
Brunei Compare Compare
Bulgaria Compare Compare
Burkina Faso Compare Compare
Burundi Compare Compare
Cambodia Compare Compare
Cameroon Compare Compare
Canada Compare Compare
Cape Verde Compare Compare
Cayman Islands Compare Compare
CAR Compare Compare
Chad Compare Compare
Chile Compare Compare
China Compare Compare
Colombia Compare Compare
Comoros Compare Compare
Congo Compare Compare
Costa Rica Compare Compare
Croatia Compare Compare
Cuba Compare Compare
Curacao Compare Compare
Cyprus Compare Compare
Czech Republic Compare Compare
DR Congo Compare Compare
Denmark Compare Compare
Djibouti Compare Compare
Dominica Compare Compare
Dominican Republic Compare Compare
East Timor Compare Compare
Ecuador Compare Compare
Egypt Compare Compare
El Salvador Compare Compare
Equatorial Guinea Compare Compare
Eritrea Compare Compare
Estonia Compare Compare
Eswatini Compare Compare
Ethiopia Compare Compare
Fiji Compare Compare
Finland Compare Compare
France Compare Compare
Gabon Compare Compare
Gambia Compare Compare
Georgia Compare Compare
Germany Compare Compare
Ghana Compare Compare
Greece Compare Compare
Grenada Compare Compare
Guatemala Compare Compare
Guinea Compare Compare
Guinea-Bissau Compare Compare
Guyana Compare Compare
Haiti Compare Compare
Honduras Compare Compare
Hungary Compare Compare
Iceland Compare Compare
India Compare Compare
Indonesia Compare Compare
Iran Compare Compare
Iraq Compare Compare
Ireland Compare Compare
Israel Compare Compare
Italy Compare Compare
Ivory Coast Compare Compare
Jamaica Compare Compare
Japan Compare Compare
Jordan Compare Compare
Kazakhstan Compare Compare
Kenya Compare Compare
Kiribati Compare Compare
Kuwait Compare Compare
Kyrgyzstan Compare Compare
Laos Compare Compare
Latvia Compare Compare
Lebanon Compare Compare
Lesotho Compare Compare
Liberia Compare Compare
Libya Compare Compare
Liechtenstein Compare Compare
Lithuania Compare Compare
Luxembourg Compare Compare
Madagascar Compare Compare
Malawi Compare Compare
Malaysia Compare Compare
Maldives Compare Compare
Mali Compare Compare
Malta Compare Compare
Marshall Islands Compare Compare
Mauritania Compare Compare
Mauritius Compare Compare
Mexico Compare Compare
Moldova Compare Compare
Monaco Compare Compare
Mongolia Compare Compare
Montenegro Compare Compare
Morocco Compare Compare
Mozambique Compare Compare
Myanmar Compare Compare
Namibia Compare Compare
Nauru Compare Compare
Nepal Compare Compare
Netherlands Compare Compare
New Zealand Compare Compare
Nicaragua Compare Compare
Niger Compare Compare
Nigeria Compare Compare
North Korea Compare Compare
North Macedonia Compare Compare
Norway Compare Compare
Oman Compare Compare
Pakistan Compare Compare
Palau Compare Compare
Palestine Compare Compare
Panama Compare Compare
Papua New Guinea Compare Compare
Paraguay Compare Compare
Peru Compare Compare
Philippines Compare Compare
Poland Compare Compare
Portugal Compare Compare
Qatar Compare Compare
Romania Compare Compare
Russia Compare Compare
Rwanda Compare Compare
Saint Kitts Compare Compare
Saint Lucia Compare Compare
Saint Vincent Compare Compare
Samoa Compare Compare
San Marino Compare Compare
Sao Tome Compare Compare
Saudi Arabia Compare Compare
Senegal Compare Compare
Serbia Compare Compare
Seychelles Compare Compare
Singapore Compare Compare
Slovakia Compare Compare
Slovenia Compare Compare
Solomon Islands Compare Compare
Somalia Compare Compare
South Africa Compare Compare
South Korea Compare Compare
South Sudan Compare Compare
Spain Compare Compare
Sri Lanka Compare Compare
Sudan Compare Compare
Suriname Compare Compare
Sweden Compare Compare
Switzerland Compare Compare
Syria Compare Compare
Taiwan Compare Compare
Tajikistan Compare Compare
Thailand Compare Compare
Togo Compare Compare
Tonga Compare Compare
Trinidad Compare Compare
Tunisia Compare Compare
Turkey Compare Compare
Turkmenistan Compare Compare
Tuvalu Compare Compare
Uganda Compare Compare
Ukraine Compare Compare
UAE Compare Compare
United Kingdom Compare Compare
United States Compare Compare
Uruguay Compare Compare
Uzbekistan Compare Compare
Vanuatu Compare Compare
Vatican Compare Compare
Venezuela Compare Compare
Vietnam Compare Compare
Yemen Compare Compare
Zambia Compare Compare
Zimbabwe Compare Compare