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

Updated on by Georank

The latest officially reported population of Greece was 10,413,962 in 2025 vs 8,819,794 people in Sierra Leone in 2025. In 2026, based on the adjusted UN estimation, the current Greece's population is 10,371,575 people compared to 9,090,531 in Sierra Leone.

Population statistics:

  • Greece's population is 1.14 times bigger than Sierra Leone's.
  • Greece is ranked the 94th most populous country in the world, while Sierra Leone is the 100th.
  • The countries together account for 0.23% of the world: 0.12% for Greece vs 0.11% for Sierra Leone.
  • For the last 10 years, Greece has had an average growth rate of -0.41% per year vs +2.29% in Sierra Leone.
  • Since 2006, the population of Greece has decreased from 11M people to 10.4M (5.89% decline), while Sierra Leone has grown from 5.62M to 9.09M (61.6% growth).

Greece vs Sierra Leone: population by year and forecast

Greece
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Population
Greece Sierra Leone
2100 6,583,798 16,107,087
2099 6,626,788 16,121,940
2098 6,669,448 16,135,035
2097 6,712,148 16,149,905
2096 6,754,327 16,160,672
2095 6,795,603 16,169,304
2094 6,836,072 16,168,902
2093 6,875,572 16,173,609
2092 6,914,370 16,170,778
2091 6,952,243 16,163,901
2090 6,990,331 16,154,165
2089 7,028,964 16,142,526
2088 7,066,683 16,128,775
2087 7,103,695 16,112,585
2086 7,141,616 16,085,549
2085 7,180,403 16,064,212
2084 7,219,180 16,040,563
2083 7,257,814 16,006,923
2082 7,298,443 15,970,872
2081 7,340,066 15,930,880
2080 7,383,894 15,892,665
2079 7,429,047 15,850,728
2078 7,475,929 15,801,450
2077 7,525,653 15,750,408
2076 7,576,476 15,695,310
2075 7,629,016 15,635,345
2074 7,684,147 15,580,279
2073 7,742,105 15,512,655
2072 7,802,307 15,442,481
2071 7,863,855 15,370,747
2070 7,927,670 15,293,426
2069 7,993,717 15,212,664
2068 8,061,488 15,124,069
2067 8,129,716 15,028,190
2066 8,198,001 14,931,295
2065 8,265,902 14,833,794
2064 8,334,739 14,736,872
2063 8,404,367 14,638,180
2062 8,473,829 14,525,736
2061 8,543,564 14,420,068
2060 8,612,080 14,307,451
2059 8,681,422 14,194,972
2058 8,749,623 14,077,124
2057 8,817,088 13,957,197
2056 8,882,878 13,832,494
2055 8,947,611 13,702,508
2054 9,010,135 13,576,231
2053 9,070,133 13,440,929
2052 9,129,136 13,299,910
2051 9,186,935 13,152,910
2050 9,242,128 13,006,688
2049 9,297,265 12,863,637
2048 9,349,392 12,712,671
2047 9,400,970 12,566,944
2046 9,448,620 12,411,042
2045 9,495,447 12,254,651
2044 9,542,082 12,088,895
2043 9,587,391 11,928,393
2042 9,631,428 11,767,372
2041 9,676,515 11,599,942
2040 9,721,977 11,428,331
2039 9,767,381 11,259,845
2038 9,813,639 11,097,180
2037 9,860,147 10,928,754
2036 9,906,540 10,757,928
2035 9,953,900 10,582,918
2034 10,000,716 10,411,088
2033 10,047,814 10,238,503
2032 10,096,329 10,059,929
2031 10,142,892 9,881,109
2030 10,189,114 9,705,485
2029 10,235,303 9,529,493
2028 10,281,352 9,358,412
2027 10,326,692 9,177,288
2026 10,371,575 8,998,902
2025 10,413,962 8,819,794
2024 10,405,134 8,642,022
2023 10,407,351 8,460,512
2022 10,437,805 8,276,807
2021 10,570,130 8,094,602
2020 10,698,599 7,912,558
2019 10,721,582 7,731,991
2018 10,732,882 7,554,563
2017 10,754,679 7,379,299
2016 10,775,971 7,205,328
2015 10,820,883 7,037,655
2014 10,892,413 6,876,385
2013 10,965,211 6,714,051
2012 11,045,011 6,551,080
2011 11,104,899 6,387,251
2010 11,121,341 6,222,714
2009 11,107,017 6,055,646
2008 11,077,841 5,894,722
2007 11,048,473 5,749,352
2006 11,020,362 5,624,466
2005 10,987,314 5,501,712
2004 10,955,141 5,355,717
2003 10,928,070 5,177,687
2002 10,902,022 4,971,435
2001 10,862,132 4,692,716
2000 10,805,808 4,423,611
1999 10,761,698 4,318,043
1998 10,720,509 4,295,785
1997 10,661,259 4,253,716
1996 10,608,800 4,199,210
1995 10,562,153 4,179,179
1994 10,512,922 4,173,105
1993 10,460,415 4,157,130
1992 10,399,061 4,166,366
1991 10,319,927 4,246,267
1990 10,196,792 4,196,828
1989 10,089,498 4,034,037
1988 10,036,983 3,934,517
1987 10,000,595 3,829,718
1986 9,967,213 3,728,380
1985 9,934,300 3,638,438
1984 9,895,801 3,558,758
1983 9,846,627 3,481,646
1982 9,789,513 3,408,183
1981 9,729,350 3,338,940
1980 9,642,505 3,272,089
1979 9,548,258 3,207,499
1978 9,429,959 3,145,517
1977 9,308,479 3,085,354
1976 9,188,150 3,028,820
1975 9,046,541 2,974,657
1974 8,962,022 2,920,459
1973 8,929,086 2,866,955
1972 8,888,628 2,814,388
1971 8,831,036 2,763,222
1970 8,792,806 2,712,286
1969 8,772,764 2,661,365
1968 8,740,765 2,611,532
1967 8,684,088 2,562,384
1966 8,613,651 2,514,638
1965 8,550,333 2,468,666
1964 8,510,429 2,424,390
1963 8,479,625 2,382,258
1962 8,448,233 2,342,242
1961 8,398,050 2,304,227
1960 8,331,725 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/greece/sierra-leone | CC BY

From 2006 to 2016, the population of Greece decreased by 244,391 people (a 2.22% decline), while Sierra Leone gained 1,580,862 people (a 28.1% growth).

For the next 10 years, from 2016 to 2026, Greece lost 404,396 people (a 3.75% decline), while Sierra Leone's population increased by 1,885,203 people (a 26.2% growth).

Greece was ranked 74th most populous country in 2006 and is 94th 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) Greece's population will shrink by 10.9% to 9,242,128 people with a rank change from 94th to 106th. The population of Sierra Leone will increase by 43.1% to 13,006,688 people and rank change from 100th to 91st.

Sierra Leone is projected to reach its peak in 2093 at 16.2M people, while Greece's population already peaked in 2010 at 11.1M people and is projected to decrease to 6.58M people by 2100.

Population growth rate by year

Greece
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Growth rate
Greece Sierra Leone
2100 -0.65% -0.09%
2099 -0.64% -0.08%
2098 -0.64% -0.09%
2097 -0.62% -0.07%
2096 -0.61% -0.05%
2095 -0.59% 0.002%
2094 -0.57% -0.03%
2093 -0.56% 0.02%
2092 -0.54% 0.04%
2091 -0.54% 0.06%
2090 -0.55% 0.07%
2089 -0.53% 0.09%
2088 -0.52% 0.1%
2087 -0.53% 0.17%
2086 -0.54% 0.13%
2085 -0.54% 0.15%
2084 -0.53% 0.21%
2083 -0.56% 0.23%
2082 -0.57% 0.25%
2081 -0.59% 0.24%
2080 -0.61% 0.26%
2079 -0.63% 0.31%
2078 -0.66% 0.32%
2077 -0.67% 0.35%
2076 -0.69% 0.38%
2075 -0.72% 0.35%
2074 -0.75% 0.44%
2073 -0.77% 0.45%
2072 -0.78% 0.47%
2071 -0.8% 0.51%
2070 -0.83% 0.53%
2069 -0.84% 0.59%
2068 -0.84% 0.64%
2067 -0.83% 0.65%
2066 -0.82% 0.66%
2065 -0.83% 0.66%
2064 -0.83% 0.67%
2063 -0.82% 0.77%
2062 -0.82% 0.73%
2061 -0.8% 0.79%
2060 -0.8% 0.79%
2059 -0.78% 0.84%
2058 -0.77% 0.86%
2057 -0.74% 0.9%
2056 -0.72% 0.95%
2055 -0.69% 0.93%
2054 -0.66% 1.01%
2053 -0.65% 1.06%
2052 -0.63% 1.12%
2051 -0.6% 1.12%
2050 -0.59% 1.11%
2049 -0.56% 1.19%
2048 -0.55% 1.16%
2047 -0.5% 1.26%
2046 -0.49% 1.28%
2045 -0.49% 1.37%
2044 -0.47% 1.35%
2043 -0.46% 1.37%
2042 -0.47% 1.44%
2041 -0.47% 1.5%
2040 -0.46% 1.5%
2039 -0.47% 1.47%
2038 -0.47% 1.54%
2037 -0.47% 1.59%
2036 -0.48% 1.65%
2035 -0.47% 1.65%
2034 -0.47% 1.69%
2033 -0.48% 1.78%
2032 -0.46% 1.81%
2031 -0.45% 1.81%
2030 -0.45% 1.85%
2029 -0.45% 1.83%
2028 -0.44% 1.97%
2027 -0.43% 1.98%
2026 -0.41% 2.03%
2025 0.08% 2.06%
2024 -0.02% 2.15%
2023 -0.29% 2.22%
2022 -1.25% 2.25%
2021 -1.2% 2.3%
2020 -0.21% 2.34%
2019 -0.11% 2.35%
2018 -0.2% 2.38%
2017 -0.2% 2.41%
2016 -0.42% 2.38%
2015 -0.66% 2.35%
2014 -0.66% 2.42%
2013 -0.72% 2.49%
2012 -0.54% 2.56%
2011 -0.15% 2.64%
2010 0.13% 2.76%
2009 0.26% 2.73%
2008 0.27% 2.53%
2007 0.26% 2.22%
2006 0.3% 2.23%
2005 0.29% 2.73%
2004 0.25% 3.44%
2003 0.24% 4.15%
2002 0.37% 5.94%
2001 0.52% 6.08%
2000 0.41% 2.44%
1999 0.38% 0.52%
1998 0.56% 0.99%
1997 0.49% 1.3%
1996 0.44% 0.48%
1995 0.47% 0.15%
1994 0.5% 0.38%
1993 0.59% -0.22%
1992 0.77% -1.88%
1991 1.21% 1.18%
1990 1.06% 4.04%
1989 0.52% 2.53%
1988 0.36% 2.74%
1987 0.33% 2.72%
1986 0.33% 2.47%
1985 0.39% 2.24%
1984 0.5% 2.21%
1983 0.58% 2.16%
1982 0.62% 2.07%
1981 0.9% 2.04%
1980 0.99% 2.01%
1979 1.25% 1.97%
1978 1.31% 1.95%
1977 1.31% 1.87%
1976 1.57% 1.82%
1975 0.94% 1.86%
1974 0.37% 1.87%
1973 0.46% 1.87%
1972 0.65% 1.85%
1971 0.43% 1.88%
1970 0.23% 1.91%
1969 0.37% 1.91%
1968 0.65% 1.92%
1967 0.82% 1.9%
1966 0.74% 1.86%
1965 0.47% 1.83%
1964 0.36% 1.77%
1963 0.37% 1.71%
1962 0.6% 1.65%
1961 0.8% 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/greece/sierra-leone | CC BY

In 2025, the population of Greece grew by 0.08%, while Sierra Leone's population grew by 2.06%.

Live population counters

Greece Sierra Leone
Current population
10371575
9090531
Population rank 94/197 100/197
Percent of world population 0.12% 0.11%
One net population change
59.7 minutes
2.96 minutes
One birth every
7.65 minutes
2.02 minutes
One death every
4.17 minutes
7.41 minutes
Daily growth/decline +24 +487
Annual growth/decline +8,828 +177,772
Annual growth/decline rate +0.08% +2.06%
Population growth rate rank 154/197 47/197
One migration net change every
31.7 minutes
46.6 minutes
Annual migration change +16,636 -11,309
Net migration rank 37/196 136/196
Foreign-born residents 1,423,964 49,997
Foreign-born residents rank 46/195 151/195
Foreign-born share of population 14.2% 0.6%
Foreign-born share rank 47/195 174/195

Natural population change vs migration

Greece
Natural

Migration
Sierra Leone
Natural

Migration
1x
Year Population change
Greece Sierra Leone
Natural Migration Natural Migration
2025 - 16,636 - -11,309
2024 -57,229 -122,772 189,234 -11,000
2023 -56,200 -159,430 188,788 -4,000
2022 -63,671 -53,997 186,625 -4,000
2021 -58,135 -160,277 183,326 -1,544
2020 -46,004 6,353 181,015 1,292
2019 -41,814 36,762 181,068 -2,238
2018 -33,272 17,938 178,772 -2,741
2017 -36,566 10,483 173,259 1,234
2016 -25,862 10,484 168,784 4,657
2015 -29,216 -43,462 162,275 -356
2014 -20,696 -46,678 160,137 485
2013 -17,545 -59,323 161,265 2,773
2012 -16,568 -65,364 160,915 988
2011 -4,441 -31,786 158,858 6,895
2010 5,560 2,001 155,338 7,983
2009 8,886 18,182 152,669 18,145
2008 11,077 27,081 149,855 1,182
2007 2,210 25,400 145,740 -6,042
2006 6,612 27,621 144,127 -34,052
2005 2,197 33,297 137,234 -1,805
2004 0 29,039 132,661 23,897
2003 -1,093 25,323 130,312 69,185
2002 0 25,692 126,429 86,578
2001 0 60,387 116,647 227,791
2000 -1,081 54,661 110,754 83,013
1999 -2,153 49,930 102,295 -84,926
1998 -2,144 47,856 103,906 -76,766
1997 2,133 45,671 105,433 -48,437
1996 0 43,444 104,140 -52,110
1995 1,056 42,674 100,885 -112,857
1994 6,307 42,897 101,486 -77,371
1993 4,185 39,829 103,317 -95,476
1992 6,239 41,000 103,251 -129,565
1991 6,192 37,917 105,477 -238,965
1990 8,157 26,294 100,778 131,587
1989 9,080 18,862 98,298 -5,079
1988 15,055 20,557 96,344 9,470
1987 10,001 19,005 94,235 9,558
1986 20,931 19,064 90,902 7,992
1985 22,849 16,093 88,869 -7,873
1984 37,604 19,767 87,072 -8,708
1983 42,341 18,655 84,628 -8,783
1982 50,906 19,675 82,457 -11,379
1981 54,484 25,061 80,111 -12,699
1980 60,748 47,460 77,932 -11,641
1979 65,882 72,184 75,992 -13,095
1978 64,124 60,775 74,130 -13,073
1977 59,574 19,193 71,663 -12,399
1976 65,236 89,601 69,506 -15,686
1975 61,516 61,265 67,560 -13,058
1974 68,111 -22,590 65,357 -11,473
1973 59,824 -42,387 62,443 -9,322
1972 64,887 -3,589 60,279 -8,267
1971 67,116 -12,747 58,484 -8,162
1970 71,222 -54,166 56,513 -4,957
1969 82,464 -118,544 54,768 -4,485
1968 87,408 -429 53,126 -3,743
1967 91,183 -55,853 51,734 -2,819
1966 86,998 21,206 49,486 -2,911
1965 83,793 -81,576 47,223 -1,851
1964 83,402 -76,678 45,487 -2,308
1963 81,404 -77,345 43,569 -2,480
1962 85,327 -74,972 41,603 -2,658
1961 86,500 -61,102 40,022 -2,947
1960 96,648 -15,996 38,192 -3,528

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

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

Over the last 10 years, 49.5% of the population change in Greece is from natural causes (a loss of 447,969 people) and 50.5% is from migration (a loss of 457,918 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, 1,423,964 residents or 14.2% of the population were not native-born in Greece, compared to 49,997 people or 0.6% in Sierra Leone.

Biggest cities by population

Greece
City Population
Athens 643K
Crete 623K
Thessaloniki 310K
Patras 174K
Piraeus 168K
Larissa 146K
Heraklion 145K
Volos 85.8K
Ioannina 64.9K
Chalcis 64.5K
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/greece/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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