The latest officially reported population of Montenegro was 623,129 in 2025 vs 8,819,794 people in Sierra Leone in 2025. In 2026, based on the adjusted UN estimation, the current Montenegro's population is 613,759 people compared to 9,090,531 in Sierra Leone.
Population statistics:
- Sierra Leone's population is 14.8 times bigger than Montenegro's.
- Montenegro is ranked the 166th most populous country in the world, while Sierra Leone is the 100th.
- The countries together account for 0.12% of the world: 0.007% for Montenegro vs 0.11% for Sierra Leone.
- For the last 10 years, Montenegro has had an average growth rate of -0.009% per year vs +2.29% in Sierra Leone.
- Since 2006, the population of Montenegro has decreased from 615K people to 614K (0.21% decline), while Sierra Leone has grown from 5.62M to 9.09M (61.6% growth).
Montenegro vs Sierra Leone: population by year and forecast
| Year | Population | |
|---|---|---|
Montenegro
|
Sierra Leone
|
|
| 2100 | 320,475 | 16,107,087 |
| 2099 | 324,115 | 16,121,940 |
| 2098 | 327,713 | 16,135,035 |
| 2097 | 331,355 | 16,149,905 |
| 2096 | 335,007 | 16,160,672 |
| 2095 | 338,654 | 16,169,304 |
| 2094 | 342,297 | 16,168,902 |
| 2093 | 345,975 | 16,173,609 |
| 2092 | 349,650 | 16,170,778 |
| 2091 | 353,353 | 16,163,901 |
| 2090 | 357,061 | 16,154,165 |
| 2089 | 360,774 | 16,142,526 |
| 2088 | 364,461 | 16,128,775 |
| 2087 | 368,192 | 16,112,585 |
| 2086 | 371,937 | 16,085,549 |
| 2085 | 375,715 | 16,064,212 |
| 2084 | 379,539 | 16,040,563 |
| 2083 | 383,359 | 16,006,923 |
| 2082 | 387,223 | 15,970,872 |
| 2081 | 391,147 | 15,930,880 |
| 2080 | 395,110 | 15,892,665 |
| 2079 | 399,116 | 15,850,728 |
| 2078 | 403,132 | 15,801,450 |
| 2077 | 407,160 | 15,750,408 |
| 2076 | 411,233 | 15,695,310 |
| 2075 | 415,356 | 15,635,345 |
| 2074 | 419,523 | 15,580,279 |
| 2073 | 423,747 | 15,512,655 |
| 2072 | 427,961 | 15,442,481 |
| 2071 | 432,249 | 15,370,747 |
| 2070 | 436,592 | 15,293,426 |
| 2069 | 440,907 | 15,212,664 |
| 2068 | 445,235 | 15,124,069 |
| 2067 | 449,615 | 15,028,190 |
| 2066 | 453,939 | 14,931,295 |
| 2065 | 458,379 | 14,833,794 |
| 2064 | 462,797 | 14,736,872 |
| 2063 | 467,212 | 14,638,180 |
| 2062 | 471,608 | 14,525,736 |
| 2061 | 475,993 | 14,420,068 |
| 2060 | 480,424 | 14,307,451 |
| 2059 | 484,778 | 14,194,972 |
| 2058 | 489,082 | 14,077,124 |
| 2057 | 493,417 | 13,957,197 |
| 2056 | 497,856 | 13,832,494 |
| 2055 | 502,222 | 13,702,508 |
| 2054 | 506,518 | 13,576,231 |
| 2053 | 510,759 | 13,440,929 |
| 2052 | 514,996 | 13,299,910 |
| 2051 | 519,179 | 13,152,910 |
| 2050 | 523,331 | 13,006,688 |
| 2049 | 527,485 | 12,863,637 |
| 2048 | 531,545 | 12,712,671 |
| 2047 | 535,674 | 12,566,944 |
| 2046 | 539,713 | 12,411,042 |
| 2045 | 543,724 | 12,254,651 |
| 2044 | 547,696 | 12,088,895 |
| 2043 | 551,691 | 11,928,393 |
| 2042 | 555,589 | 11,767,372 |
| 2041 | 559,520 | 11,599,942 |
| 2040 | 563,410 | 11,428,331 |
| 2039 | 567,304 | 11,259,845 |
| 2038 | 571,182 | 11,097,180 |
| 2037 | 575,034 | 10,928,754 |
| 2036 | 578,842 | 10,757,928 |
| 2035 | 582,604 | 10,582,918 |
| 2034 | 586,301 | 10,411,088 |
| 2033 | 589,943 | 10,238,503 |
| 2032 | 593,521 | 10,059,929 |
| 2031 | 597,018 | 9,881,109 |
| 2030 | 600,445 | 9,705,485 |
| 2029 | 603,840 | 9,529,493 |
| 2028 | 607,174 | 9,358,412 |
| 2027 | 610,430 | 9,177,288 |
| 2026 | 613,759 | 8,998,902 |
| 2025 | 623,129 | 8,819,794 |
| 2024 | 623,525 | 8,642,022 |
| 2023 | 623,529 | 8,460,512 |
| 2022 | 623,591 | 8,276,807 |
| 2021 | 625,053 | 8,094,602 |
| 2020 | 626,590 | 7,912,558 |
| 2019 | 626,753 | 7,731,991 |
| 2018 | 626,438 | 7,554,563 |
| 2017 | 625,982 | 7,379,299 |
| 2016 | 625,353 | 7,205,328 |
| 2015 | 624,651 | 7,037,655 |
| 2014 | 623,744 | 6,876,385 |
| 2013 | 622,587 | 6,714,051 |
| 2012 | 621,418 | 6,551,080 |
| 2011 | 620,345 | 6,387,251 |
| 2010 | 619,428 | 6,222,714 |
| 2009 | 618,294 | 6,055,646 |
| 2008 | 616,969 | 5,894,722 |
| 2007 | 615,875 | 5,749,352 |
| 2006 | 615,025 | 5,624,466 |
| 2005 | 614,261 | 5,501,712 |
| 2004 | 613,353 | 5,355,717 |
| 2003 | 612,267 | 5,177,687 |
| 2002 | 609,828 | 4,971,435 |
| 2001 | 607,389 | 4,692,716 |
| 2000 | 604,950 | 4,423,611 |
| 1999 | 606,001 | 4,318,043 |
| 1998 | 607,662 | 4,295,785 |
| 1997 | 609,520 | 4,253,716 |
| 1996 | 611,003 | 4,199,210 |
| 1995 | 611,712 | 4,179,179 |
| 1994 | 611,389 | 4,173,105 |
| 1993 | 610,170 | 4,157,130 |
| 1992 | 608,516 | 4,166,366 |
| 1991 | 607,105 | 4,246,267 |
| 1990 | 606,372 | 4,196,828 |
| 1989 | 606,571 | 4,034,037 |
| 1988 | 607,413 | 3,934,517 |
| 1987 | 608,144 | 3,829,718 |
| 1986 | 607,711 | 3,728,380 |
| 1985 | 605,398 | 3,638,438 |
| 1984 | 600,884 | 3,558,758 |
| 1983 | 594,506 | 3,481,646 |
| 1982 | 587,001 | 3,408,183 |
| 1981 | 579,445 | 3,338,940 |
| 1980 | 572,608 | 3,272,089 |
| 1979 | 566,888 | 3,207,499 |
| 1978 | 562,065 | 3,145,517 |
| 1977 | 557,576 | 3,085,354 |
| 1976 | 552,562 | 3,028,820 |
| 1975 | 546,487 | 2,974,657 |
| 1974 | 538,902 | 2,920,459 |
| 1973 | 530,220 | 2,866,955 |
| 1972 | 521,785 | 2,814,388 |
| 1971 | 515,449 | 2,763,222 |
| 1970 | 512,407 | 2,712,286 |
| 1969 | 513,340 | 2,661,365 |
| 1968 | 517,481 | 2,611,532 |
| 1967 | 522,796 | 2,562,384 |
| 1966 | 526,419 | 2,514,638 |
| 1965 | 526,327 | 2,468,666 |
| 1964 | 521,753 | 2,424,390 |
| 1963 | 513,409 | 2,382,258 |
| 1962 | 502,558 | 2,342,242 |
| 1961 | 491,140 | 2,304,227 |
| 1960 | 480,579 | 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/montenegro/sierra-leone | CC BY 
From 2006 to 2016, the population of Montenegro increased by 10,328 people (a 1.68% growth), while Sierra Leone gained 1,580,862 people (a 28.1% growth).
For the next 10 years, from 2016 to 2026, Montenegro lost 11,594 people (a 1.85% decline), while Sierra Leone's population increased by 1,885,203 people (a 26.2% growth).
Montenegro was ranked 162nd most populous country in 2006 and is 166th 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) Montenegro's population will shrink by 14.7% to 523,331 people with a rank change from 166th to 170th. 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 Montenegro's population already peaked in 2019 at 627K people and is projected to decrease to 320K people by 2100.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Montenegro
|
Sierra Leone
|
|
| 2100 | -1.12% | -0.09% |
| 2099 | -1.1% | -0.08% |
| 2098 | -1.1% | -0.09% |
| 2097 | -1.09% | -0.07% |
| 2096 | -1.08% | -0.05% |
| 2095 | -1.06% | 0.002% |
| 2094 | -1.06% | -0.03% |
| 2093 | -1.05% | 0.02% |
| 2092 | -1.05% | 0.04% |
| 2091 | -1.04% | 0.06% |
| 2090 | -1.03% | 0.07% |
| 2089 | -1.01% | 0.09% |
| 2088 | -1.01% | 0.1% |
| 2087 | -1.01% | 0.17% |
| 2086 | -1.01% | 0.13% |
| 2085 | -1.01% | 0.15% |
| 2084 | -1% | 0.21% |
| 2083 | -1% | 0.23% |
| 2082 | -1% | 0.25% |
| 2081 | -1% | 0.24% |
| 2080 | -1% | 0.26% |
| 2079 | -1% | 0.31% |
| 2078 | -0.99% | 0.32% |
| 2077 | -0.99% | 0.35% |
| 2076 | -0.99% | 0.38% |
| 2075 | -0.99% | 0.35% |
| 2074 | -1% | 0.44% |
| 2073 | -0.98% | 0.45% |
| 2072 | -0.99% | 0.47% |
| 2071 | -0.99% | 0.51% |
| 2070 | -0.98% | 0.53% |
| 2069 | -0.97% | 0.59% |
| 2068 | -0.97% | 0.64% |
| 2067 | -0.95% | 0.65% |
| 2066 | -0.97% | 0.66% |
| 2065 | -0.95% | 0.66% |
| 2064 | -0.94% | 0.67% |
| 2063 | -0.93% | 0.77% |
| 2062 | -0.92% | 0.73% |
| 2061 | -0.92% | 0.79% |
| 2060 | -0.9% | 0.79% |
| 2059 | -0.88% | 0.84% |
| 2058 | -0.88% | 0.86% |
| 2057 | -0.89% | 0.9% |
| 2056 | -0.87% | 0.95% |
| 2055 | -0.85% | 0.93% |
| 2054 | -0.83% | 1.01% |
| 2053 | -0.82% | 1.06% |
| 2052 | -0.81% | 1.12% |
| 2051 | -0.79% | 1.12% |
| 2050 | -0.79% | 1.11% |
| 2049 | -0.76% | 1.19% |
| 2048 | -0.77% | 1.16% |
| 2047 | -0.75% | 1.26% |
| 2046 | -0.74% | 1.28% |
| 2045 | -0.73% | 1.37% |
| 2044 | -0.72% | 1.35% |
| 2043 | -0.7% | 1.37% |
| 2042 | -0.7% | 1.44% |
| 2041 | -0.69% | 1.5% |
| 2040 | -0.69% | 1.5% |
| 2039 | -0.68% | 1.47% |
| 2038 | -0.67% | 1.54% |
| 2037 | -0.66% | 1.59% |
| 2036 | -0.65% | 1.65% |
| 2035 | -0.63% | 1.65% |
| 2034 | -0.62% | 1.69% |
| 2033 | -0.6% | 1.78% |
| 2032 | -0.59% | 1.81% |
| 2031 | -0.57% | 1.81% |
| 2030 | -0.56% | 1.85% |
| 2029 | -0.55% | 1.83% |
| 2028 | -0.53% | 1.97% |
| 2027 | -0.54% | 1.98% |
| 2026 | -1.5% | 2.03% |
| 2025 | -0.06% | 2.06% |
| 2024 | -0.001% | 2.15% |
| 2023 | -0.01% | 2.22% |
| 2022 | -0.23% | 2.25% |
| 2021 | -0.25% | 2.3% |
| 2020 | -0.03% | 2.34% |
| 2019 | 0.05% | 2.35% |
| 2018 | 0.07% | 2.38% |
| 2017 | 0.1% | 2.41% |
| 2016 | 0.11% | 2.38% |
| 2015 | 0.15% | 2.35% |
| 2014 | 0.19% | 2.42% |
| 2013 | 0.19% | 2.49% |
| 2012 | 0.17% | 2.56% |
| 2011 | 0.15% | 2.64% |
| 2010 | 0.18% | 2.76% |
| 2009 | 0.21% | 2.73% |
| 2008 | 0.18% | 2.53% |
| 2007 | 0.14% | 2.22% |
| 2006 | 0.12% | 2.23% |
| 2005 | 0.15% | 2.73% |
| 2004 | 0.18% | 3.44% |
| 2003 | 0.4% | 4.15% |
| 2002 | 0.4% | 5.94% |
| 2001 | 0.4% | 6.08% |
| 2000 | -0.17% | 2.44% |
| 1999 | -0.27% | 0.52% |
| 1998 | -0.3% | 0.99% |
| 1997 | -0.24% | 1.3% |
| 1996 | -0.12% | 0.48% |
| 1995 | 0.05% | 0.15% |
| 1994 | 0.2% | 0.38% |
| 1993 | 0.27% | -0.22% |
| 1992 | 0.23% | -1.88% |
| 1991 | 0.12% | 1.18% |
| 1990 | -0.03% | 4.04% |
| 1989 | -0.14% | 2.53% |
| 1988 | -0.12% | 2.74% |
| 1987 | 0.07% | 2.72% |
| 1986 | 0.38% | 2.47% |
| 1985 | 0.75% | 2.24% |
| 1984 | 1.07% | 2.21% |
| 1983 | 1.28% | 2.16% |
| 1982 | 1.3% | 2.07% |
| 1981 | 1.19% | 2.04% |
| 1980 | 1.01% | 2.01% |
| 1979 | 0.86% | 1.97% |
| 1978 | 0.81% | 1.95% |
| 1977 | 0.91% | 1.87% |
| 1976 | 1.11% | 1.82% |
| 1975 | 1.41% | 1.86% |
| 1974 | 1.64% | 1.87% |
| 1973 | 1.62% | 1.87% |
| 1972 | 1.23% | 1.85% |
| 1971 | 0.59% | 1.88% |
| 1970 | -0.18% | 1.91% |
| 1969 | -0.8% | 1.91% |
| 1968 | -1.02% | 1.92% |
| 1967 | -0.69% | 1.9% |
| 1966 | 0.02% | 1.86% |
| 1965 | 0.88% | 1.83% |
| 1964 | 1.63% | 1.77% |
| 1963 | 2.16% | 1.71% |
| 1962 | 2.32% | 1.65% |
| 1961 | 2.2% | 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/montenegro/sierra-leone | CC BY
In 2025, the population of Montenegro declined by 0.06%, while Sierra Leone's population grew by 2.06%.
Live population counters
|
Montenegro
|
Sierra Leone
|
|
|---|---|---|
| Current population |
613759
|
9090531
|
| Population rank | 166/197 | 100/197 |
| Percent of world population | 0.007% | 0.11% |
| One net population change |
22.2 hours
|
2.96 minutes
|
| One birth every |
1.25 hours
|
2.02 minutes
|
| One death every |
1.38 hours
|
7.41 minutes
|
| Daily growth/decline | -1 | +487 |
| Annual growth/decline | -396 | +177,772 |
| Annual growth/decline rate | -0.06% | +2.06% |
| Population growth rate rank | 163/197 | 47/197 |
| One migration net change every |
56.8 minutes
|
46.6 minutes
|
| Annual migration change | -9,279 | -11,309 |
| Net migration rank | 131/196 | 136/196 |
| Foreign-born residents | 92,237 | 49,997 |
| Foreign-born residents rank | 134/195 | 151/195 |
| Foreign-born share of population | 14.4% | 0.6% |
| Foreign-born share rank | 45/195 | 174/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Montenegro
|
Sierra Leone
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | -9,279 | - | -11,309 |
| 2024 | 624 | -1,686 | 189,234 | -11,000 |
| 2023 | 686 | 12,000 | 188,788 | -4,000 |
| 2022 | 0 | 26,332 | 186,625 | -4,000 |
| 2021 | -2,062 | -2,344 | 183,326 | -1,544 |
| 2020 | -188 | -3,310 | 181,015 | 1,292 |
| 2019 | 627 | -4,083 | 181,068 | -2,238 |
| 2018 | 752 | -5,058 | 178,772 | -2,741 |
| 2017 | 939 | -4,948 | 173,259 | 1,234 |
| 2016 | 1,125 | -5,274 | 168,784 | 4,657 |
| 2015 | 1,062 | -4,863 | 162,275 | -356 |
| 2014 | 1,560 | -4,357 | 160,137 | 485 |
| 2013 | 1,557 | -2,478 | 161,265 | 2,773 |
| 2012 | 1,554 | -1,583 | 160,915 | 988 |
| 2011 | 1,365 | 0 | 158,858 | 6,895 |
| 2010 | 1,797 | -2,276 | 155,338 | 7,983 |
| 2009 | 2,783 | -3,456 | 152,669 | 18,145 |
| 2008 | 2,530 | -3,326 | 149,855 | 1,182 |
| 2007 | 1,848 | -3,056 | 145,740 | -6,042 |
| 2006 | 1,599 | -2,735 | 144,127 | -34,052 |
| 2005 | 1,536 | -2,247 | 137,234 | -1,805 |
| 2004 | 2,146 | -1,997 | 132,661 | 23,897 |
| 2003 | 2,632 | -3,178 | 130,312 | 69,185 |
| 2002 | 2,988 | -3,357 | 126,429 | 86,578 |
| 2001 | 3,462 | -3,511 | 116,647 | 227,791 |
| 2000 | 3,751 | -3,734 | 110,754 | 83,013 |
| 1999 | 3,454 | -3,487 | 102,295 | -84,926 |
| 1998 | 3,889 | -3,326 | 103,906 | -76,766 |
| 1997 | 3,597 | -3,077 | 105,433 | -48,437 |
| 1996 | 4,155 | -3,051 | 104,140 | -52,110 |
| 1995 | 4,527 | -3,082 | 100,885 | -112,857 |
| 1994 | 4,381 | -2,889 | 101,486 | -77,371 |
| 1993 | 4,638 | -2,835 | 103,317 | -95,476 |
| 1992 | 5,015 | -2,942 | 103,251 | -129,565 |
| 1991 | 5,191 | -2,630 | 105,477 | -238,965 |
| 1990 | 5,010 | -1,705 | 100,778 | 131,587 |
| 1989 | 5,129 | -1,730 | 98,298 | -5,079 |
| 1988 | 5,529 | -2,165 | 96,344 | 9,470 |
| 1987 | 5,958 | -2,569 | 94,235 | 9,558 |
| 1986 | 6,097 | -2,747 | 90,902 | 7,992 |
| 1985 | 6,283 | -3,013 | 88,869 | -7,873 |
| 1984 | 6,337 | -3,074 | 87,072 | -8,708 |
| 1983 | 6,482 | -3,190 | 84,628 | -8,783 |
| 1982 | 6,419 | -3,151 | 82,457 | -11,379 |
| 1981 | 6,275 | -2,287 | 80,111 | -12,699 |
| 1980 | 6,383 | -450 | 77,932 | -11,641 |
| 1979 | 6,139 | -718 | 75,992 | -13,095 |
| 1978 | 6,408 | -1,103 | 74,130 | -13,073 |
| 1977 | 6,650 | -1,364 | 71,663 | -12,399 |
| 1976 | 6,845 | -1,447 | 69,506 | -15,686 |
| 1975 | 6,878 | -1,588 | 67,560 | -13,058 |
| 1974 | 6,919 | -1,669 | 65,357 | -11,473 |
| 1973 | 7,096 | -1,778 | 62,443 | -9,322 |
| 1972 | 7,252 | -1,922 | 60,279 | -8,267 |
| 1971 | 7,168 | -1,856 | 58,484 | -8,162 |
| 1970 | 7,069 | -2,013 | 56,513 | -4,957 |
| 1969 | 7,449 | -2,456 | 54,768 | -4,485 |
| 1968 | 7,497 | -2,404 | 53,126 | -3,743 |
| 1967 | 7,961 | -2,519 | 51,734 | -2,819 |
| 1966 | 8,661 | -2,751 | 49,486 | -2,911 |
| 1965 | 9,010 | -2,743 | 47,223 | -1,851 |
| 1964 | 9,227 | -2,734 | 45,487 | -2,308 |
| 1963 | 9,449 | -2,800 | 43,569 | -2,480 |
| 1962 | 9,402 | -2,606 | 41,603 | -2,658 |
| 1961 | 9,278 | -2,254 | 40,022 | -2,947 |
| 1960 | 9,144 | -2,467 | 38,192 | -3,528 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/montenegro/sierra-leone | CC BY
Over the last 10 years, 34.5% of the population change in Montenegro is from natural causes (a gain of 3,565 people) and 65.5% is from migration (a gain of 6,766 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, 92,237 residents or 14.4% of the population were not native-born in Montenegro, compared to 49,997 people or 0.6% in Sierra Leone.
Biggest cities by population
|
Montenegro
|
|
|---|---|
| City | Population |
| Podgorica | 151K |
| Cetinje | 14K |
| Plav | 13.8K |
| Bar | 13.7K |
| Budva | 13.3K |
| Ulcinj | 11.5K |
| Berane | 11.1K |
| Mojkovac | 3.59K |
| Kotor | 961 |
|
Sierra Leone
|
|
|---|---|
| City | Population |
| Freetown | 951K |
| Bo | 234K |
| Kenema | 188K |
Compare countries by 7 more topics
Population differences between Montenegro and Sierra Leone
|
Montenegro
|
Sierra Leone
|
|
|---|---|---|
| Life expectancy | 77.6 years | 62.3 years |
| Average age | 40.6 years | 24.6 years |
| Median age | 41 years | 20.7 years |
| Male:Female ratio | 48.1:51.9 | 49.9:50.1 |
| Fertility rate | 1.8 births per woman | 3.7 births per woman |
| Population density | 118.2 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/montenegro/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)
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