The latest officially reported population of Nigeria was 237,527,782 in 2025 vs 8,819,794 people in Sierra Leone in 2025. In 2026, based on the adjusted UN estimation, the current Nigeria's population is 245,016,045 people compared to 9,090,531 in Sierra Leone.
Population statistics:
- Nigeria's population is 27 times bigger than Sierra Leone's.
- Nigeria is ranked the 6th most populous country in the world, while Sierra Leone is the 100th.
- The countries together account for 3.06% of the world: 2.95% for Nigeria vs 0.11% for Sierra Leone.
- For the last 10 years, Nigeria has had an average growth rate of +2.25% per year vs +2.29% in Sierra Leone.
- Since 2006, the population of Nigeria has increased from 149M people to 245M (64.4% growth), while Sierra Leone has grown from 5.62M to 9.09M (61.6% growth).
Nigeria vs Sierra Leone: population by year and forecast
| Year | Population | |
|---|---|---|
Nigeria
|
Sierra Leone
|
|
| 2100 | 481,640,156 | 16,107,087 |
| 2099 | 481,456,918 | 16,121,940 |
| 2098 | 481,181,892 | 16,135,035 |
| 2097 | 480,838,161 | 16,149,905 |
| 2096 | 480,422,467 | 16,160,672 |
| 2095 | 479,938,579 | 16,169,304 |
| 2094 | 479,395,022 | 16,168,902 |
| 2093 | 478,769,369 | 16,173,609 |
| 2092 | 478,059,864 | 16,170,778 |
| 2091 | 477,236,907 | 16,163,901 |
| 2090 | 476,329,495 | 16,154,165 |
| 2089 | 475,326,347 | 16,142,526 |
| 2088 | 474,231,442 | 16,128,775 |
| 2087 | 473,035,563 | 16,112,585 |
| 2086 | 471,732,001 | 16,085,549 |
| 2085 | 470,328,175 | 16,064,212 |
| 2084 | 468,806,172 | 16,040,563 |
| 2083 | 467,187,453 | 16,006,923 |
| 2082 | 465,472,417 | 15,970,872 |
| 2081 | 463,643,190 | 15,930,880 |
| 2080 | 461,705,493 | 15,892,665 |
| 2079 | 459,644,523 | 15,850,728 |
| 2078 | 457,477,264 | 15,801,450 |
| 2077 | 455,218,871 | 15,750,408 |
| 2076 | 452,849,991 | 15,695,310 |
| 2075 | 450,367,356 | 15,635,345 |
| 2074 | 447,789,885 | 15,580,279 |
| 2073 | 445,117,028 | 15,512,655 |
| 2072 | 442,340,440 | 15,442,481 |
| 2071 | 439,464,323 | 15,370,747 |
| 2070 | 436,505,329 | 15,293,426 |
| 2069 | 433,437,998 | 15,212,664 |
| 2068 | 430,286,232 | 15,124,069 |
| 2067 | 427,032,499 | 15,028,190 |
| 2066 | 423,702,640 | 14,931,295 |
| 2065 | 420,285,359 | 14,833,794 |
| 2064 | 416,778,394 | 14,736,872 |
| 2063 | 413,198,800 | 14,638,180 |
| 2062 | 409,551,159 | 14,525,736 |
| 2061 | 405,827,482 | 14,420,068 |
| 2060 | 402,041,765 | 14,307,451 |
| 2059 | 398,197,311 | 14,194,972 |
| 2058 | 394,284,767 | 14,077,124 |
| 2057 | 390,311,065 | 13,957,197 |
| 2056 | 386,267,580 | 13,832,494 |
| 2055 | 382,162,992 | 13,702,508 |
| 2054 | 378,000,511 | 13,576,231 |
| 2053 | 373,769,779 | 13,440,929 |
| 2052 | 369,472,476 | 13,299,910 |
| 2051 | 365,120,741 | 13,152,910 |
| 2050 | 360,706,317 | 13,006,688 |
| 2049 | 356,243,287 | 12,863,637 |
| 2048 | 351,724,743 | 12,712,671 |
| 2047 | 347,142,279 | 12,566,944 |
| 2046 | 342,505,549 | 12,411,042 |
| 2045 | 337,807,869 | 12,254,651 |
| 2044 | 333,050,132 | 12,088,895 |
| 2043 | 328,230,652 | 11,928,393 |
| 2042 | 323,363,366 | 11,767,372 |
| 2041 | 318,443,989 | 11,599,942 |
| 2040 | 313,468,061 | 11,428,331 |
| 2039 | 308,450,008 | 11,259,845 |
| 2038 | 303,399,842 | 11,097,180 |
| 2037 | 298,327,800 | 10,928,754 |
| 2036 | 293,227,654 | 10,757,928 |
| 2035 | 288,115,630 | 10,582,918 |
| 2034 | 282,995,818 | 10,411,088 |
| 2033 | 277,875,880 | 10,238,503 |
| 2032 | 272,747,599 | 10,059,929 |
| 2031 | 267,645,657 | 9,881,109 |
| 2030 | 262,562,767 | 9,705,485 |
| 2029 | 257,484,616 | 9,529,493 |
| 2028 | 252,445,821 | 9,358,412 |
| 2027 | 247,437,680 | 9,177,288 |
| 2026 | 242,458,365 | 8,998,902 |
| 2025 | 237,527,782 | 8,819,794 |
| 2024 | 232,679,478 | 8,642,022 |
| 2023 | 227,882,945 | 8,460,512 |
| 2022 | 223,150,896 | 8,276,807 |
| 2021 | 218,529,286 | 8,094,602 |
| 2020 | 213,996,181 | 7,912,558 |
| 2019 | 209,485,641 | 7,731,991 |
| 2018 | 204,938,755 | 7,554,563 |
| 2017 | 200,254,579 | 7,379,299 |
| 2016 | 195,443,700 | 7,205,328 |
| 2015 | 190,671,878 | 7,037,655 |
| 2014 | 185,896,915 | 6,876,385 |
| 2013 | 181,049,443 | 6,714,051 |
| 2012 | 176,200,625 | 6,551,080 |
| 2011 | 171,379,598 | 6,387,251 |
| 2010 | 166,642,886 | 6,222,714 |
| 2009 | 162,049,464 | 6,055,646 |
| 2008 | 157,595,014 | 5,894,722 |
| 2007 | 153,267,261 | 5,749,352 |
| 2006 | 149,077,334 | 5,624,466 |
| 2005 | 145,017,253 | 5,501,712 |
| 2004 | 141,057,045 | 5,355,717 |
| 2003 | 137,202,644 | 5,177,687 |
| 2002 | 133,471,989 | 4,971,435 |
| 2001 | 129,862,595 | 4,692,716 |
| 2000 | 126,382,494 | 4,423,611 |
| 1999 | 123,047,320 | 4,318,043 |
| 1998 | 119,846,254 | 4,295,785 |
| 1997 | 116,754,792 | 4,253,716 |
| 1996 | 113,754,779 | 4,199,210 |
| 1995 | 110,819,428 | 4,179,179 |
| 1994 | 107,935,714 | 4,173,105 |
| 1993 | 105,122,069 | 4,157,130 |
| 1992 | 102,372,770 | 4,166,366 |
| 1991 | 99,720,162 | 4,246,267 |
| 1990 | 97,120,925 | 4,196,828 |
| 1989 | 94,531,014 | 4,034,037 |
| 1988 | 92,020,090 | 3,934,517 |
| 1987 | 89,591,716 | 3,829,718 |
| 1986 | 87,235,953 | 3,728,380 |
| 1985 | 84,897,973 | 3,638,438 |
| 1984 | 82,526,443 | 3,558,758 |
| 1983 | 80,438,260 | 3,481,646 |
| 1982 | 78,378,701 | 3,408,183 |
| 1981 | 76,068,103 | 3,338,940 |
| 1980 | 73,764,641 | 3,272,089 |
| 1979 | 71,498,242 | 3,207,499 |
| 1978 | 69,326,532 | 3,145,517 |
| 1977 | 67,234,590 | 3,085,354 |
| 1976 | 65,258,009 | 3,028,820 |
| 1975 | 63,410,815 | 2,974,657 |
| 1974 | 61,679,144 | 2,920,459 |
| 1973 | 60,082,139 | 2,866,955 |
| 1972 | 58,601,748 | 2,814,388 |
| 1971 | 57,214,684 | 2,763,222 |
| 1970 | 55,893,838 | 2,712,286 |
| 1969 | 54,631,914 | 2,661,365 |
| 1968 | 53,432,783 | 2,611,532 |
| 1967 | 52,293,065 | 2,562,384 |
| 1966 | 51,188,234 | 2,514,638 |
| 1965 | 50,086,764 | 2,468,666 |
| 1964 | 49,012,016 | 2,424,390 |
| 1963 | 47,973,575 | 2,382,258 |
| 1962 | 46,965,292 | 2,342,242 |
| 1961 | 45,989,310 | 2,304,227 |
| 1960 | 45,053,782 | 2,268,356 |
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/nigeria/sierra-leone | CC BY 
From 2006 to 2016, the population of Nigeria increased by 46,366,366 people (a 31.1% growth), while Sierra Leone gained 1,580,862 people (a 28.1% growth).
For the next 10 years, from 2016 to 2026, Nigeria gained 49,572,345 people (a 25.4% growth), while Sierra Leone's population increased by 1,885,203 people (a 26.2% growth).
Nigeria was ranked 7th most populous country in 2006 and is 6th in 2026. Sierra Leone was ranked 105th in 2006 and ranked 100th now.
The UN's World Population Prospects forecasts that in 24 years (in 2050) Nigeria's population will grow by 47.2% to 360,706,317 people with a rank change from 6th to 5th. The population of Sierra Leone will increase by 43.1% to 13,006,688 people and rank change from 100th to 91st.
Nigeria is projected to reach its peak in 2100 at 482M people compared to the peak of 16.2M people in 2093 for Sierra Leone.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Nigeria
|
Sierra Leone
|
|
| 2100 | 0.04% | -0.09% |
| 2099 | 0.06% | -0.08% |
| 2098 | 0.07% | -0.09% |
| 2097 | 0.09% | -0.07% |
| 2096 | 0.1% | -0.05% |
| 2095 | 0.11% | 0.002% |
| 2094 | 0.13% | -0.03% |
| 2093 | 0.15% | 0.02% |
| 2092 | 0.17% | 0.04% |
| 2091 | 0.19% | 0.06% |
| 2090 | 0.21% | 0.07% |
| 2089 | 0.23% | 0.09% |
| 2088 | 0.25% | 0.1% |
| 2087 | 0.28% | 0.17% |
| 2086 | 0.3% | 0.13% |
| 2085 | 0.32% | 0.15% |
| 2084 | 0.35% | 0.21% |
| 2083 | 0.37% | 0.23% |
| 2082 | 0.39% | 0.25% |
| 2081 | 0.42% | 0.24% |
| 2080 | 0.45% | 0.26% |
| 2079 | 0.47% | 0.31% |
| 2078 | 0.5% | 0.32% |
| 2077 | 0.52% | 0.35% |
| 2076 | 0.55% | 0.38% |
| 2075 | 0.58% | 0.35% |
| 2074 | 0.6% | 0.44% |
| 2073 | 0.63% | 0.45% |
| 2072 | 0.65% | 0.47% |
| 2071 | 0.68% | 0.51% |
| 2070 | 0.71% | 0.53% |
| 2069 | 0.73% | 0.59% |
| 2068 | 0.76% | 0.64% |
| 2067 | 0.79% | 0.65% |
| 2066 | 0.81% | 0.66% |
| 2065 | 0.84% | 0.66% |
| 2064 | 0.87% | 0.67% |
| 2063 | 0.89% | 0.77% |
| 2062 | 0.92% | 0.73% |
| 2061 | 0.94% | 0.79% |
| 2060 | 0.97% | 0.79% |
| 2059 | 0.99% | 0.84% |
| 2058 | 1.02% | 0.86% |
| 2057 | 1.05% | 0.9% |
| 2056 | 1.07% | 0.95% |
| 2055 | 1.1% | 0.93% |
| 2054 | 1.13% | 1.01% |
| 2053 | 1.16% | 1.06% |
| 2052 | 1.19% | 1.12% |
| 2051 | 1.22% | 1.12% |
| 2050 | 1.25% | 1.11% |
| 2049 | 1.28% | 1.19% |
| 2048 | 1.32% | 1.16% |
| 2047 | 1.35% | 1.26% |
| 2046 | 1.39% | 1.28% |
| 2045 | 1.43% | 1.37% |
| 2044 | 1.47% | 1.35% |
| 2043 | 1.51% | 1.37% |
| 2042 | 1.54% | 1.44% |
| 2041 | 1.59% | 1.5% |
| 2040 | 1.63% | 1.5% |
| 2039 | 1.66% | 1.47% |
| 2038 | 1.7% | 1.54% |
| 2037 | 1.74% | 1.59% |
| 2036 | 1.77% | 1.65% |
| 2035 | 1.81% | 1.65% |
| 2034 | 1.84% | 1.69% |
| 2033 | 1.88% | 1.78% |
| 2032 | 1.91% | 1.81% |
| 2031 | 1.94% | 1.81% |
| 2030 | 1.97% | 1.85% |
| 2029 | 2% | 1.83% |
| 2028 | 2.02% | 1.97% |
| 2027 | 2.05% | 1.98% |
| 2026 | 2.08% | 2.03% |
| 2025 | 2.08% | 2.06% |
| 2024 | 2.1% | 2.15% |
| 2023 | 2.12% | 2.22% |
| 2022 | 2.11% | 2.25% |
| 2021 | 2.12% | 2.3% |
| 2020 | 2.15% | 2.34% |
| 2019 | 2.22% | 2.35% |
| 2018 | 2.34% | 2.38% |
| 2017 | 2.46% | 2.41% |
| 2016 | 2.5% | 2.38% |
| 2015 | 2.57% | 2.35% |
| 2014 | 2.68% | 2.42% |
| 2013 | 2.75% | 2.49% |
| 2012 | 2.81% | 2.56% |
| 2011 | 2.84% | 2.64% |
| 2010 | 2.83% | 2.76% |
| 2009 | 2.83% | 2.73% |
| 2008 | 2.82% | 2.53% |
| 2007 | 2.81% | 2.22% |
| 2006 | 2.8% | 2.23% |
| 2005 | 2.81% | 2.73% |
| 2004 | 2.81% | 3.44% |
| 2003 | 2.8% | 4.15% |
| 2002 | 2.78% | 5.94% |
| 2001 | 2.75% | 6.08% |
| 2000 | 2.71% | 2.44% |
| 1999 | 2.67% | 0.52% |
| 1998 | 2.65% | 0.99% |
| 1997 | 2.64% | 1.3% |
| 1996 | 2.65% | 0.48% |
| 1995 | 2.67% | 0.15% |
| 1994 | 2.68% | 0.38% |
| 1993 | 2.69% | -0.22% |
| 1992 | 2.66% | -1.88% |
| 1991 | 2.68% | 1.18% |
| 1990 | 2.74% | 4.04% |
| 1989 | 2.73% | 2.53% |
| 1988 | 2.71% | 2.74% |
| 1987 | 2.7% | 2.72% |
| 1986 | 2.75% | 2.47% |
| 1985 | 2.87% | 2.24% |
| 1984 | 2.6% | 2.21% |
| 1983 | 2.63% | 2.16% |
| 1982 | 3.04% | 2.07% |
| 1981 | 3.12% | 2.04% |
| 1980 | 3.17% | 2.01% |
| 1979 | 3.13% | 1.97% |
| 1978 | 3.11% | 1.95% |
| 1977 | 3.03% | 1.87% |
| 1976 | 2.91% | 1.82% |
| 1975 | 2.81% | 1.86% |
| 1974 | 2.66% | 1.87% |
| 1973 | 2.53% | 1.87% |
| 1972 | 2.42% | 1.85% |
| 1971 | 2.36% | 1.88% |
| 1970 | 2.31% | 1.91% |
| 1969 | 2.24% | 1.91% |
| 1968 | 2.18% | 1.92% |
| 1967 | 2.16% | 1.9% |
| 1966 | 2.2% | 1.86% |
| 1965 | 2.19% | 1.83% |
| 1964 | 2.16% | 1.77% |
| 1963 | 2.15% | 1.71% |
| 1962 | 2.12% | 1.65% |
| 1961 | 2.08% | 1.58% |
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/nigeria/sierra-leone | CC BY
In 2025, the population of Nigeria grew by 2.08%, while Sierra Leone's population grew by 2.06%.
Live population counters
|
Nigeria
|
Sierra Leone
|
|
|---|---|---|
| Current population |
245016045
|
9090531
|
| Population rank | 6/197 | 100/197 |
| Percent of world population | 2.95% | 0.11% |
| One net population change |
6.52 seconds
|
2.96 minutes
|
| One birth every |
4.17 seconds
|
2.02 minutes
|
| One death every |
11.6 seconds
|
7.41 minutes
|
| Daily growth/decline | +13,283 | +487 |
| Annual growth/decline | +4,848,304 | +177,772 |
| Annual growth/decline rate | +2.08% | +2.06% |
| Population growth rate rank | 45/197 | 47/197 |
| One migration net change every |
34.5 minutes
|
46.6 minutes
|
| Annual migration change | -15,258 | -11,309 |
| Net migration rank | 145/196 | 136/196 |
| Foreign-born residents | 1,403,281 | 49,997 |
| Foreign-born residents rank | 49/195 | 151/195 |
| Foreign-born share of population | 0.6% | 0.6% |
| Foreign-born share rank | 173/195 | 174/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Nigeria
|
Sierra Leone
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | -15,258 | - | -11,309 |
| 2024 | 4,851,833 | -35,202 | 189,234 | -11,000 |
| 2023 | 4,834,309 | -57,936 | 188,788 | -4,000 |
| 2022 | 4,739,502 | -51,680 | 186,625 | -4,000 |
| 2021 | 4,641,562 | -86,115 | 183,326 | -1,544 |
| 2020 | 4,525,164 | -14,497 | 181,015 | 1,292 |
| 2019 | 4,609,941 | -99,722 | 181,068 | -2,238 |
| 2018 | 4,659,898 | -76,565 | 178,772 | -2,741 |
| 2017 | 4,706,183 | 78,685 | 173,259 | 1,234 |
| 2016 | 4,761,594 | 75,265 | 168,784 | 4,657 |
| 2015 | 4,823,045 | -116,162 | 162,275 | -356 |
| 2014 | 4,862,319 | -19,376 | 160,137 | 485 |
| 2013 | 4,811,751 | 40,201 | 161,265 | 2,773 |
| 2012 | 4,774,508 | 71,138 | 160,915 | 988 |
| 2011 | 4,728,363 | 67,808 | 158,858 | 6,895 |
| 2010 | 4,629,173 | 47,966 | 155,338 | 7,983 |
| 2009 | 4,528,149 | -18,422 | 152,669 | 18,145 |
| 2008 | 4,412,976 | -13,646 | 149,855 | 1,182 |
| 2007 | 4,265,428 | -9,162 | 145,740 | -6,042 |
| 2006 | 4,135,703 | -12,093 | 144,127 | -34,052 |
| 2005 | 4,013,788 | -17,146 | 137,234 | -1,805 |
| 2004 | 3,877,376 | 46,370 | 132,661 | 23,897 |
| 2003 | 3,751,120 | 33,857 | 130,312 | 69,185 |
| 2002 | 3,606,814 | 69,594 | 126,429 | 86,578 |
| 2001 | 3,478,370 | 64,163 | 116,647 | 227,791 |
| 2000 | 3,343,196 | 74,535 | 110,754 | 83,013 |
| 1999 | 3,155,425 | 97,195 | 102,295 | -84,926 |
| 1998 | 3,003,946 | 145,575 | 103,906 | -76,766 |
| 1997 | 2,936,500 | 96,885 | 105,433 | -48,437 |
| 1996 | 2,882,205 | 84,448 | 104,140 | -52,110 |
| 1995 | 2,830,771 | 73,243 | 100,885 | -112,857 |
| 1994 | 2,735,198 | 128,134 | 101,486 | -77,371 |
| 1993 | 2,673,675 | 90,200 | 103,317 | -95,476 |
| 1992 | 2,596,173 | 138,412 | 103,251 | -129,565 |
| 1991 | 2,527,807 | 42,760 | 105,477 | -238,965 |
| 1990 | 2,491,928 | 135,959 | 100,778 | 131,587 |
| 1989 | 2,452,324 | 99,588 | 98,298 | -5,079 |
| 1988 | 2,376,419 | 93,510 | 96,344 | 9,470 |
| 1987 | 2,322,397 | 64,418 | 94,235 | 9,558 |
| 1986 | 2,295,003 | 29,682 | 90,902 | 7,992 |
| 1985 | 2,289,784 | 61,514 | 88,869 | -7,873 |
| 1984 | 2,278,060 | 113,758 | 87,072 | -8,708 |
| 1983 | 2,292,089 | -507,539 | 84,628 | -8,783 |
| 1982 | 2,233,401 | 101,116 | 82,457 | -11,379 |
| 1981 | 2,179,884 | 106,723 | 80,111 | -12,699 |
| 1980 | 2,121,618 | 198,672 | 77,932 | -11,641 |
| 1979 | 2,074,807 | 137,721 | 75,992 | -13,095 |
| 1978 | 2,019,621 | 111,258 | 74,130 | -13,073 |
| 1977 | 1,923,917 | 129,075 | 71,663 | -12,399 |
| 1976 | 1,827,289 | 72,889 | 69,506 | -15,686 |
| 1975 | 1,718,623 | 75,603 | 67,560 | -13,058 |
| 1974 | 1,624,813 | 44,281 | 65,357 | -11,473 |
| 1973 | 1,525,485 | -618 | 62,443 | -9,322 |
| 1972 | 1,448,928 | -12,962 | 60,279 | -8,267 |
| 1971 | 1,373,896 | -35,639 | 58,484 | -8,162 |
| 1970 | 1,295,507 | 7,953 | 56,513 | -4,957 |
| 1969 | 1,213,484 | 6,912 | 54,768 | -4,485 |
| 1968 | 1,168,254 | 9,615 | 53,126 | -3,743 |
| 1967 | 1,082,884 | 18,683 | 51,734 | -2,819 |
| 1966 | 1,095,582 | 12,513 | 49,486 | -2,911 |
| 1965 | 1,061,840 | 32,988 | 47,223 | -1,851 |
| 1964 | 1,028,272 | 26,411 | 45,487 | -2,308 |
| 1963 | 995,116 | 27,115 | 43,569 | -2,480 |
| 1962 | 966,452 | 27,906 | 41,603 | -2,658 |
| 1961 | 932,111 | 25,515 | 40,022 | -2,947 |
| 1960 | 901,301 | 12,131 | 38,192 | -3,528 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/nigeria/sierra-leone | CC BY
Over the last 10 years, 99.2% of the population change in Nigeria is from natural causes (a gain of 47,153,031 people) and 0.81% is from migration (a loss of 383,929 people). In Sierra Leone 99% is from natural causes (a gain of 1,793,146 people) and 1.03% is from migration (a loss of 18,696 people).
As of 2024, 1,403,281 residents or 0.6% of the population were not native-born in Nigeria, compared to 49,997 people or 0.6% in Sierra Leone.
Biggest cities by population
|
Nigeria
|
|
|---|---|
| City | Population |
| Lagos | 15.1M |
| Kano | 4.35M |
| Port Harcourt | 3.32M |
| Ibadan | 2.56M |
| Benin | 1.78M |
| Abuja | 1.69M |
| Onitsha | 1.48M |
| Aba | 1.16M |
| Enugu | 1.03M |
| Owerri | 908K |
|
Sierra Leone
|
|
|---|---|
| City | Population |
| Freetown | 951K |
| Bo | 234K |
| Kenema | 188K |
Compare countries by 7 more topics
Population differences between Nigeria and Sierra Leone
|
Nigeria
|
Sierra Leone
|
|
|---|---|---|
| Life expectancy | 55 years | 62.3 years |
| Average age | 23.6 years | 24.6 years |
| Median age | 19.2 years | 20.7 years |
| Male:Female ratio | 50.6:49.4 | 49.9:50.1 |
| Fertility rate | 4.38 births per woman | 3.7 births per woman |
| Population density | 689 ppl/mi² | 323 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/nigeria/sierra-leone | 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)
Creative Commons Attribution (CC BY) — you’re free to copy, share, remix, adapt, and use even commercially as long as you give appropriate credit and clearly indicate if you made changes. Other sources may be subject to different license terms.