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

Updated on by Georank

The latest officially reported population of Guinea was 15,099,727 in 2025 vs 8,819,794 people in Sierra Leone in 2025. In 2026, based on the adjusted UN estimation, the current Guinea's population is 15,624,314 people compared to 9,090,531 in Sierra Leone.

Population statistics:

  • Guinea's population is 1.72 times bigger than Sierra Leone's.
  • Guinea is ranked the 75th most populous country in the world, while Sierra Leone is the 100th.
  • The countries together account for 0.3% of the world: 0.19% for Guinea vs 0.11% for Sierra Leone.
  • For the last 10 years, Guinea has had an average growth rate of +2.53% per year vs +2.29% in Sierra Leone.
  • Since 2006, the population of Guinea has increased from 9.44M people to 15.6M (65.5% growth), while Sierra Leone has grown from 5.62M to 9.09M (61.6% growth).

Guinea vs Sierra Leone: population by year and forecast

Guinea
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Population
Guinea Sierra Leone
2100 32,364,089 16,107,087
2099 32,335,737 16,121,940
2098 32,301,888 16,135,035
2097 32,264,245 16,149,905
2096 32,223,409 16,160,672
2095 32,180,906 16,169,304
2094 32,128,461 16,168,902
2093 32,070,233 16,173,609
2092 32,004,039 16,170,778
2091 31,938,993 16,163,901
2090 31,865,431 16,154,165
2089 31,784,278 16,142,526
2088 31,695,025 16,128,775
2087 31,604,442 16,112,585
2086 31,501,968 16,085,549
2085 31,385,846 16,064,212
2084 31,266,394 16,040,563
2083 31,137,977 16,006,923
2082 31,006,787 15,970,872
2081 30,862,718 15,930,880
2080 30,721,315 15,892,665
2079 30,567,350 15,850,728
2078 30,411,381 15,801,450
2077 30,251,450 15,750,408
2076 30,082,310 15,695,310
2075 29,901,467 15,635,345
2074 29,719,623 15,580,279
2073 29,532,278 15,512,655
2072 29,339,197 15,442,481
2071 29,136,328 15,370,747
2070 28,929,558 15,293,426
2069 28,713,370 15,212,664
2068 28,491,765 15,124,069
2067 28,263,091 15,028,190
2066 28,028,228 14,931,295
2065 27,789,471 14,833,794
2064 27,544,497 14,736,872
2063 27,289,819 14,638,180
2062 27,030,698 14,525,736
2061 26,767,195 14,420,068
2060 26,502,170 14,307,451
2059 26,227,034 14,194,972
2058 25,942,870 14,077,124
2057 25,657,776 13,957,197
2056 25,365,788 13,832,494
2055 25,067,342 13,702,508
2054 24,767,401 13,576,231
2053 24,455,823 13,440,929
2052 24,145,399 13,299,910
2051 23,832,003 13,152,910
2050 23,515,546 13,006,688
2049 23,200,886 12,863,637
2048 22,883,237 12,712,671
2047 22,559,713 12,566,944
2046 22,232,988 12,411,042
2045 21,903,369 12,254,651
2044 21,575,120 12,088,895
2043 21,238,706 11,928,393
2042 20,901,770 11,767,372
2041 20,563,787 11,599,942
2040 20,221,476 11,428,331
2039 19,882,253 11,259,845
2038 19,544,803 11,097,180
2037 19,207,349 10,928,754
2036 18,867,323 10,757,928
2035 18,529,941 10,582,918
2034 18,196,482 10,411,088
2033 17,857,890 10,238,503
2032 17,516,126 10,059,929
2031 17,173,592 9,881,109
2030 16,827,321 9,705,485
2029 16,484,980 9,529,493
2028 16,139,132 9,358,412
2027 15,792,131 9,177,288
2026 15,447,070 8,998,902
2025 15,099,727 8,819,794
2024 14,754,785 8,642,022
2023 14,405,468 8,460,512
2022 14,055,137 8,276,807
2021 13,710,513 8,094,602
2020 13,371,183 7,912,558
2019 13,034,346 7,731,991
2018 12,704,774 7,554,563
2017 12,385,659 7,379,299
2016 12,073,030 7,205,328
2015 11,767,070 7,037,655
2014 11,472,924 6,876,385
2013 11,191,873 6,714,051
2012 10,921,581 6,551,080
2011 10,656,810 6,387,251
2010 10,396,086 6,222,714
2009 10,143,534 6,055,646
2008 9,898,870 5,894,722
2007 9,662,281 5,749,352
2006 9,441,171 5,624,466
2005 9,245,844 5,501,712
2004 9,062,726 5,355,717
2003 8,870,781 5,177,687
2002 8,674,066 4,971,435
2001 8,539,960 4,692,716
2000 8,428,832 4,423,611
1999 8,265,123 4,318,043
1998 8,081,990 4,295,785
1997 7,931,370 4,253,716
1996 7,770,035 4,199,210
1995 7,553,249 4,179,179
1994 7,345,107 4,173,105
1993 7,128,177 4,157,130
1992 6,914,366 4,166,366
1991 6,697,166 4,246,267
1990 6,434,374 4,196,828
1989 6,215,811 4,034,037
1988 6,056,574 3,934,517
1987 5,900,198 3,829,718
1986 5,750,668 3,728,380
1985 5,610,373 3,638,438
1984 5,480,096 3,558,758
1983 5,359,814 3,481,646
1982 5,247,672 3,408,183
1981 5,143,288 3,338,940
1980 5,047,419 3,272,089
1979 4,959,283 3,207,499
1978 4,877,854 3,145,517
1977 4,801,128 3,085,354
1976 4,727,022 3,028,820
1975 4,653,876 2,974,657
1974 4,580,510 2,920,459
1973 4,506,324 2,866,955
1972 4,431,292 2,814,388
1971 4,355,200 2,763,222
1970 4,277,535 2,712,286
1969 4,198,300 2,661,365
1968 4,118,550 2,611,532
1967 4,040,153 2,562,384
1966 3,964,155 2,514,638
1965 3,890,716 2,468,666
1964 3,819,722 2,424,390
1963 3,750,954 2,382,258
1962 3,684,273 2,342,242
1961 3,619,551 2,304,227
1960 3,556,749 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/guinea/sierra-leone | CC BY

From 2006 to 2016, the population of Guinea increased by 2,631,859 people (a 27.9% growth), while Sierra Leone gained 1,580,862 people (a 28.1% growth).

For the next 10 years, from 2016 to 2026, Guinea gained 3,551,284 people (a 29.4% growth), while Sierra Leone's population increased by 1,885,203 people (a 26.2% growth).

Guinea was ranked 84th most populous country in 2006 and is 75th 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) Guinea's population will grow by 50.5% to 23,515,546 people with a rank change from 75th to 70th. The population of Sierra Leone will increase by 43.1% to 13,006,688 people and rank change from 100th to 91st.

Guinea is projected to reach its peak in 2100 at 32.4M people compared to the peak of 16.2M people in 2093 for Sierra Leone.

Population growth rate by year

Guinea
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Growth rate
Guinea Sierra Leone
2100 0.09% -0.09%
2099 0.1% -0.08%
2098 0.12% -0.09%
2097 0.13% -0.07%
2096 0.13% -0.05%
2095 0.16% 0.002%
2094 0.18% -0.03%
2093 0.21% 0.02%
2092 0.2% 0.04%
2091 0.23% 0.06%
2090 0.26% 0.07%
2089 0.28% 0.09%
2088 0.29% 0.1%
2087 0.33% 0.17%
2086 0.37% 0.13%
2085 0.38% 0.15%
2084 0.41% 0.21%
2083 0.42% 0.23%
2082 0.47% 0.25%
2081 0.46% 0.24%
2080 0.5% 0.26%
2079 0.51% 0.31%
2078 0.53% 0.32%
2077 0.56% 0.35%
2076 0.6% 0.38%
2075 0.61% 0.35%
2074 0.63% 0.44%
2073 0.66% 0.45%
2072 0.7% 0.47%
2071 0.71% 0.51%
2070 0.75% 0.53%
2069 0.78% 0.59%
2068 0.81% 0.64%
2067 0.84% 0.65%
2066 0.86% 0.66%
2065 0.89% 0.66%
2064 0.93% 0.67%
2063 0.96% 0.77%
2062 0.98% 0.73%
2061 1% 0.79%
2060 1.05% 0.79%
2059 1.1% 0.84%
2058 1.11% 0.86%
2057 1.15% 0.9%
2056 1.19% 0.95%
2055 1.21% 0.93%
2054 1.27% 1.01%
2053 1.29% 1.06%
2052 1.32% 1.12%
2051 1.35% 1.12%
2050 1.36% 1.11%
2049 1.39% 1.19%
2048 1.43% 1.16%
2047 1.47% 1.26%
2046 1.5% 1.28%
2045 1.52% 1.37%
2044 1.58% 1.35%
2043 1.61% 1.37%
2042 1.64% 1.44%
2041 1.69% 1.5%
2040 1.71% 1.5%
2039 1.73% 1.47%
2038 1.76% 1.54%
2037 1.8% 1.59%
2036 1.82% 1.65%
2035 1.83% 1.65%
2034 1.9% 1.69%
2033 1.95% 1.78%
2032 1.99% 1.81%
2031 2.06% 1.81%
2030 2.08% 1.85%
2029 2.14% 1.83%
2028 2.2% 1.97%
2027 2.23% 1.98%
2026 2.3% 2.03%
2025 2.34% 2.06%
2024 2.42% 2.15%
2023 2.49% 2.22%
2022 2.51% 2.25%
2021 2.54% 2.3%
2020 2.58% 2.34%
2019 2.59% 2.35%
2018 2.58% 2.38%
2017 2.59% 2.41%
2016 2.6% 2.38%
2015 2.56% 2.35%
2014 2.51% 2.42%
2013 2.47% 2.49%
2012 2.48% 2.56%
2011 2.51% 2.64%
2010 2.49% 2.76%
2009 2.47% 2.73%
2008 2.45% 2.53%
2007 2.34% 2.22%
2006 2.11% 2.23%
2005 2.02% 2.73%
2004 2.16% 3.44%
2003 2.27% 4.15%
2002 1.57% 5.94%
2001 1.32% 6.08%
2000 1.98% 2.44%
1999 2.27% 0.52%
1998 1.9% 0.99%
1997 2.08% 1.3%
1996 2.87% 0.48%
1995 2.83% 0.15%
1994 3.04% 0.38%
1993 3.09% -0.22%
1992 3.24% -1.88%
1991 4.08% 1.18%
1990 3.52% 4.04%
1989 2.63% 2.53%
1988 2.65% 2.74%
1987 2.6% 2.72%
1986 2.5% 2.47%
1985 2.38% 2.24%
1984 2.24% 2.21%
1983 2.14% 2.16%
1982 2.03% 2.07%
1981 1.9% 2.04%
1980 1.78% 2.01%
1979 1.67% 1.97%
1978 1.6% 1.95%
1977 1.57% 1.87%
1976 1.57% 1.82%
1975 1.6% 1.86%
1974 1.65% 1.87%
1973 1.69% 1.87%
1972 1.75% 1.85%
1971 1.82% 1.88%
1970 1.89% 1.91%
1969 1.94% 1.91%
1968 1.94% 1.92%
1967 1.92% 1.9%
1966 1.89% 1.86%
1965 1.86% 1.83%
1964 1.83% 1.77%
1963 1.81% 1.71%
1962 1.79% 1.65%
1961 1.77% 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/guinea/sierra-leone | CC BY

In 2025, the population of Guinea grew by 2.34%, while Sierra Leone's population grew by 2.06%.

Live population counters

Guinea Sierra Leone
Current population
15624314
9090531
Population rank 75/197 100/197
Percent of world population 0.19% 0.11%
One net population change
1.53 minutes
2.96 minutes
One birth every
1.07 minutes
2.02 minutes
One death every
3.95 minutes
7.41 minutes
Daily growth/decline +945 +487
Annual growth/decline +344,942 +177,772
Annual growth/decline rate +2.34% +2.06%
Population growth rate rank 34/197 47/197
One migration net change every
32.4 minutes
46.6 minutes
Annual migration change -16,282 -11,309
Net migration rank 147/196 136/196
Foreign-born residents 117,416 49,997
Foreign-born residents rank 125/195 151/195
Foreign-born share of population 0.8% 0.6%
Foreign-born share rank 159/195 174/195

Natural population change vs migration

Guinea
Natural

Migration
Sierra Leone
Natural

Migration
1x
Year Population change
Guinea Sierra Leone
Natural Migration Natural Migration
2025 - -16,282 - -11,309
2024 358,497 -12,024 189,234 -11,000
2023 356,147 -3,997 188,788 -4,000
2022 352,517 -3,997 186,625 -4,000
2021 345,121 -4,373 183,326 -1,544
2020 342,289 -4,365 181,015 1,292
2019 338,984 -3,240 181,068 -2,238
2018 332,585 -9,187 178,772 -2,741
2017 328,542 -13,718 173,259 1,234
2016 324,608 -14,189 168,784 4,657
2015 316,604 -15,117 162,275 -356
2014 309,539 -22,741 160,137 485
2013 304,430 -29,136 161,265 2,773
2012 298,094 -32,808 160,915 988
2011 293,318 -29,069 158,858 6,895
2010 288,512 -31,327 155,338 7,983
2009 281,920 -34,007 152,669 18,145
2008 274,327 -32,925 149,855 1,182
2007 266,070 -34,311 145,740 -6,042
2006 258,518 -48,078 144,127 -34,052
2005 251,209 -71,015 137,234 -1,805
2004 242,075 -56,036 132,661 23,897
2003 234,774 -36,934 130,312 69,185
2002 229,022 -33,450 126,429 86,578
2001 227,642 -155,020 116,647 227,791
2000 227,081 -77,450 110,754 83,013
1999 223,968 -46,183 102,295 -84,926
1998 219,385 -30,903 103,906 -76,766
1997 220,373 -107,614 105,433 -48,437
1996 214,896 -4,973 104,140 -52,110
1995 205,644 18,021 100,885 -112,857
1994 201,439 -8,826 101,486 -77,371
1993 195,612 45,616 103,317 -95,476
1992 189,682 -3,285 103,251 -129,565
1991 181,299 66,718 105,477 -238,965
1990 169,926 107,641 100,778 131,587
1989 164,707 -5,150 98,298 -5,079
1988 159,566 -637 96,344 9,470
1987 154,178 -350 94,235 9,558
1986 148,137 -2,900 90,902 7,992
1985 142,313 -6,965 88,869 -7,873
1984 136,640 -11,439 87,072 -8,708
1983 130,629 -15,265 84,628 -8,783
1982 126,831 -17,920 82,457 -11,379
1981 121,223 -21,367 80,111 -12,699
1980 117,186 -25,287 77,932 -11,641
1979 113,141 -28,770 75,992 -13,095
1978 109,415 -30,933 74,130 -13,073
1977 105,990 -31,004 71,663 -12,399
1976 102,449 -29,220 69,506 -15,686
1975 99,267 -26,221 67,560 -13,058
1974 96,315 -22,637 65,357 -11,473
1973 93,764 -19,065 62,443 -9,322
1972 91,147 -15,782 60,279 -8,267
1971 88,358 -11,543 58,484 -8,162
1970 85,418 -6,906 56,513 -4,957
1969 82,799 -2,844 54,768 -4,485
1968 79,892 -345 53,126 -3,743
1967 77,251 0 51,734 -2,819
1966 74,748 0 49,486 -2,911
1965 72,134 0 47,223 -1,851
1964 69,848 0 45,487 -2,308
1963 67,690 0 43,569 -2,480
1962 65,672 0 41,603 -2,658
1961 63,766 0 40,022 -2,947
1960 61,848 0 38,192 -3,528

Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).

GeoRank.org/population/guinea/sierra-leone | CC BY

Over the last 10 years, 97.6% of the population change in Guinea is from natural causes (a gain of 3,395,894 people) and 2.42% is from migration (a loss of 84,207 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, 117,416 residents or 0.8% of the population were not native-born in Guinea, compared to 49,997 people or 0.6% in Sierra Leone.

Biggest cities by population

Guinea
City Population
Conakry 1.67M
Mamou 376K
Nzerekore 316K
Gueckedou 222K
Kankan 191K
Boffa 48.3K
Forecariah 23K
Sierra Leone
City Population
Freetown 951K
Bo 234K
Kenema 188K

Compare countries by 7 more topics

Population map with other countries

1x

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/guinea/sierra-leone | CC BY

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Data sources:

  1. World Bank | Health (1960–2025, retrieved 2026-07-08)
  2. United Nations | World Population Prospects (1960–2100, retrieved 2026-07-08)
  3. U.S. Census Bureau (1960–2025, retrieved 2026-07-08)
  4. Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08)
  5. Wikidata (2026, retrieved 2026-07-08)

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