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

Updated on by Georank team

The latest officially reported population of Montenegro was 623,525 in 2024 vs 8,642,022 people in Sierra Leone in 2024. In 2026, based on the adjusted UN estimation, the current Montenegro's population is 612,312 people compared to 9,049,533 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 101st.
  • 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 +0.01% per year vs +2.32% in Sierra Leone.
  • Since 2006, the population of Montenegro has decreased from 615K people to 612K (0.44% decline), while Sierra Leone has grown from 5.62M to 9.05M (60.9% growth).

Montenegro vs Sierra Leone: population by year and forecast

Montenegro
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Population
Montenegro Sierra Leone
2100 319,719 16,111,324
2099 323,351 16,126,181
2098 326,940 16,139,280
2097 330,574 16,154,153
2096 334,217 16,164,923
2095 337,856 16,173,557
2094 341,490 16,173,155
2093 345,159 16,177,864
2092 348,826 16,175,032
2091 352,520 16,168,153
2090 356,219 16,158,415
2089 359,924 16,146,773
2088 363,602 16,133,018
2087 367,324 16,116,823
2086 371,059 16,089,780
2085 374,829 16,068,438
2084 378,644 16,044,782
2083 382,455 16,011,134
2082 386,310 15,975,073
2081 390,224 15,935,071
2080 394,179 15,896,846
2079 398,175 15,854,898
2078 402,181 15,805,607
2077 406,200 15,754,551
2076 410,263 15,699,439
2075 414,376 15,639,458
2074 418,534 15,584,377
2073 422,748 15,516,736
2072 426,952 15,446,543
2071 431,230 15,374,790
2070 435,563 15,297,449
2069 439,868 15,216,666
2068 444,186 15,128,048
2067 448,555 15,032,144
2066 452,869 14,935,222
2065 457,298 14,837,697
2064 461,706 14,740,749
2063 466,110 14,642,031
2062 470,496 14,529,557
2061 474,871 14,423,861
2060 479,291 14,311,215
2059 483,635 14,198,706
2058 487,928 14,080,827
2057 492,253 13,960,869
2056 496,682 13,836,132
2055 501,038 13,706,113
2054 505,324 13,579,802
2053 509,555 13,444,465
2052 513,782 13,303,409
2051 517,954 13,156,370
2050 522,097 13,010,109
2049 526,241 12,867,021
2048 530,291 12,716,015
2047 534,410 12,570,250
2046 538,441 12,414,307
2045 542,441 12,257,874
2044 546,404 12,092,075
2043 550,390 11,931,531
2042 554,278 11,770,467
2041 558,200 11,602,993
2040 562,081 11,431,337
2039 565,966 11,262,807
2038 569,835 11,100,099
2037 573,678 10,931,629
2036 577,477 10,760,758
2035 581,230 10,585,702
2034 584,919 10,413,826
2033 588,552 10,241,196
2032 592,122 10,062,575
2031 595,610 9,883,708
2030 599,030 9,708,038
2029 602,416 9,532,000
2028 605,742 9,360,873
2027 608,990 9,179,702
2026 612,312 9,001,269
2025 621,659 8,822,114
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 (2025–2100, retrieved 2026-03-10); World Bank | Health (1960–2024, retrieved 2026-04-06).

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 13,041 people (a 2.09% decline), while Sierra Leone's population increased by 1,844,205 people (a 25.6% growth).

Montenegro was ranked 162nd most populous country in 2006 and is 166th in 2026. Sierra Leone was ranked 106th in 2006 and ranked 101st now.

The UN's World Population Prospects forecasts that in 24 years (in 2050) Montenegro's population will shrink by 14.7% to 522,097 people with a rank change from 166th to 170th. The population of Sierra Leone will increase by 43.8% to 13,010,109 people and rank change from 101st 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

Montenegro
Factual

Projection
Sierra Leone
Factual

Projection
1x
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 -0.3% 2.08%
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 (2025–2100, retrieved 2026-03-10); World Bank | Health (1961–2024, retrieved 2026-04-06).

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

In 2024, the population of Montenegro declined by 0.0006%, while Sierra Leone's population grew by 2.15%.

Live population counters

Montenegro Sierra Leone
Current population
612312
9049533
Population rank 166/197 101/197
Percent of world population 0.007% 0.11%
One net population change
3.26 months
2.9 minutes
One birth every
1.25 hours
2.03 minutes
One death every
1.39 hours
7.5 minutes
Daily growth/decline +0 +497
Annual growth/decline -4 +181,510
Annual growth/decline rate -0.0006% +2.15%
Population growth rate rank 164/197 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

Montenegro
Natural

Migration
Sierra Leone
Natural

Migration
1x
Year Population change
Montenegro Sierra Leone
Natural Migration Natural Migration
2025 - -9,279 - -11,309
2024 - -1,686 - -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 2026-04-06).

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

Over the last 10 years, 52.4% of the population change in Montenegro is from natural causes (a gain of 4,501 people) and 47.6% is from migration (a gain of 4,095 people). In Sierra Leone 99.6% is from natural causes (a gain of 1,764,049 people) and 0.41% is from migration (a loss of 7,211 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
Ulcinj 19.9K
Cetinje 14K
Plav 13.8K
Bar 13.7K
Budva 13.3K
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 map with other countries

1x

Data sources: World Bank | Health (1960–2024, retrieved 2026-04-06); United Nations | World Population Prospects (1960–2026, retrieved 2026-03-10); U.S. Census Bureau (1960–2025, retrieved 2026-02-08); Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-02-20).

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

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Data sources:

  1. World Bank | Health (1960–2025, retrieved 2026-04-06)
  2. United Nations | World Population Prospects (1960–2100, retrieved 2026-03-10)
  3. U.S. Census Bureau (1960–2025, retrieved 2026-02-08)
  4. Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-02-20)
  5. Wikidata (2026, retrieved 2026-02-08)

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