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

Updated on by Georank

The latest officially reported population of Oman was 5,494,691 in 2025 vs 8,819,794 people in Sierra Leone in 2025. In 2026, based on the adjusted UN estimation, the current Oman's population is 5,775,345 people compared to 9,090,531 in Sierra Leone.

Population statistics:

  • Sierra Leone's population is 1.57 times bigger than Oman's.
  • Oman is ranked the 118th most populous country in the world, while Sierra Leone is the 100th.
  • The countries together account for 0.18% of the world: 0.07% for Oman vs 0.11% for Sierra Leone.
  • For the last 10 years, Oman has had an average growth rate of +2.96% per year vs +2.29% in Sierra Leone.
  • Since 2006, the population of Oman has increased from 2.51M people to 5.78M (129.7% growth), while Sierra Leone has grown from 5.62M to 9.09M (61.6% growth).

Oman vs Sierra Leone: population by year and forecast

Oman
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Population
Oman Sierra Leone
2100 12,271,138 16,107,087
2099 12,189,126 16,121,940
2098 12,106,527 16,135,035
2097 12,023,414 16,149,905
2096 11,939,950 16,160,672
2095 11,856,068 16,169,304
2094 11,771,790 16,168,902
2093 11,687,164 16,173,609
2092 11,602,253 16,170,778
2091 11,517,204 16,163,901
2090 11,432,016 16,154,165
2089 11,346,729 16,142,526
2088 11,261,515 16,128,775
2087 11,176,614 16,112,585
2086 11,091,765 16,085,549
2085 11,007,142 16,064,212
2084 10,922,731 16,040,563
2083 10,838,447 16,006,923
2082 10,754,297 15,970,872
2081 10,670,483 15,930,880
2080 10,586,785 15,892,665
2079 10,503,234 15,850,728
2078 10,419,787 15,801,450
2077 10,336,364 15,750,408
2076 10,252,916 15,695,310
2075 10,169,444 15,635,345
2074 10,085,876 15,580,279
2073 10,002,028 15,512,655
2072 9,917,703 15,442,481
2071 9,832,854 15,370,747
2070 9,747,714 15,293,426
2069 9,662,064 15,212,664
2068 9,575,805 15,124,069
2067 9,488,969 15,028,190
2066 9,401,396 14,931,295
2065 9,313,366 14,833,794
2064 9,224,699 14,736,872
2063 9,135,431 14,638,180
2062 9,045,431 14,525,736
2061 8,954,738 14,420,068
2060 8,863,401 14,307,451
2059 8,771,240 14,194,972
2058 8,678,241 14,077,124
2057 8,584,641 13,957,197
2056 8,490,445 13,832,494
2055 8,395,691 13,702,508
2054 8,300,516 13,576,231
2053 8,205,120 13,440,929
2052 8,109,685 13,299,910
2051 8,014,625 13,152,910
2050 7,919,979 13,006,688
2049 7,825,999 12,863,637
2048 7,732,641 12,712,671
2047 7,640,024 12,566,944
2046 7,547,980 12,411,042
2045 7,456,696 12,254,651
2044 7,366,027 12,088,895
2043 7,276,260 11,928,393
2042 7,187,395 11,767,372
2041 7,099,567 11,599,942
2040 7,012,893 11,428,331
2039 6,927,343 11,259,845
2038 6,842,697 11,097,180
2037 6,758,909 10,928,754
2036 6,675,887 10,757,928
2035 6,593,385 10,582,918
2034 6,511,234 10,411,088
2033 6,429,140 10,238,503
2032 6,346,783 10,059,929
2031 6,264,019 9,881,109
2030 6,180,534 9,705,485
2029 6,087,861 9,529,493
2028 5,983,340 9,358,412
2027 5,854,563 9,177,288
2026 5,691,677 8,998,902
2025 5,494,691 8,819,794
2024 5,281,538 8,642,022
2023 5,049,269 8,460,512
2022 4,730,226 8,276,807
2021 4,500,424 8,094,602
2020 4,522,497 7,912,558
2019 4,591,241 7,731,991
2018 4,597,877 7,554,563
2017 4,537,396 7,379,299
2016 4,390,877 7,205,328
2015 4,184,895 7,037,655
2014 4,002,439 6,876,385
2013 3,833,913 6,714,051
2012 3,547,106 6,551,080
2011 3,076,763 6,387,251
2010 2,757,446 6,222,714
2009 2,684,659 6,055,646
2008 2,626,529 5,894,722
2007 2,570,174 5,749,352
2006 2,514,795 5,624,466
2005 2,459,802 5,501,712
2004 2,404,821 5,355,717
2003 2,363,796 5,177,687
2002 2,337,140 4,971,435
2001 2,310,217 4,692,716
2000 2,282,131 4,423,611
1999 2,252,909 4,318,043
1998 2,222,489 4,295,785
1997 2,190,720 4,253,716
1996 2,156,926 4,199,210
1995 2,120,528 4,179,179
1994 2,081,834 4,173,105
1993 2,021,675 4,157,130
1992 1,938,238 4,166,366
1991 1,851,473 4,246,267
1990 1,763,954 4,196,828
1989 1,676,228 4,034,037
1988 1,588,568 3,934,517
1987 1,500,996 3,829,718
1986 1,413,419 3,728,380
1985 1,325,480 3,638,438
1984 1,247,716 3,558,758
1983 1,181,459 3,481,646
1982 1,117,678 3,408,183
1981 1,057,320 3,338,940
1980 1,001,248 3,272,089
1979 949,116 3,207,499
1978 900,304 3,145,517
1977 855,314 3,085,354
1976 814,701 3,028,820
1975 778,864 2,974,657
1974 746,988 2,920,459
1973 721,179 2,866,955
1972 700,593 2,814,388
1971 681,119 2,763,222
1970 662,680 2,712,286
1969 645,255 2,661,365
1968 628,798 2,611,532
1967 613,318 2,562,384
1966 598,804 2,514,638
1965 585,236 2,468,666
1964 572,577 2,424,390
1963 560,827 2,382,258
1962 549,941 2,342,242
1961 539,854 2,304,227
1960 530,485 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/oman/sierra-leone | CC BY

From 2006 to 2016, the population of Oman increased by 1,876,082 people (a 74.6% growth), while Sierra Leone gained 1,580,862 people (a 28.1% growth).

For the next 10 years, from 2016 to 2026, Oman gained 1,384,468 people (a 31.5% growth), while Sierra Leone's population increased by 1,885,203 people (a 26.2% growth).

Oman was ranked 138th most populous country in 2006 and is 118th 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) Oman's population will grow by 37.1% to 7,919,979 people with a rank change from 118th to 113th. The population of Sierra Leone will increase by 43.1% to 13,006,688 people and rank change from 100th to 91st.

Oman is projected to reach its peak in 2100 at 12.3M people compared to the peak of 16.2M people in 2093 for Sierra Leone.

Population growth rate by year

Oman
Factual

Projection
Sierra Leone
Factual

Projection
1x
Year Growth rate
Oman Sierra Leone
2100 0.67% -0.09%
2099 0.68% -0.08%
2098 0.69% -0.09%
2097 0.7% -0.07%
2096 0.71% -0.05%
2095 0.72% 0.002%
2094 0.72% -0.03%
2093 0.73% 0.02%
2092 0.74% 0.04%
2091 0.75% 0.06%
2090 0.75% 0.07%
2089 0.76% 0.09%
2088 0.76% 0.1%
2087 0.76% 0.17%
2086 0.77% 0.13%
2085 0.77% 0.15%
2084 0.78% 0.21%
2083 0.78% 0.23%
2082 0.79% 0.25%
2081 0.79% 0.24%
2080 0.8% 0.26%
2079 0.8% 0.31%
2078 0.81% 0.32%
2077 0.81% 0.35%
2076 0.82% 0.38%
2075 0.83% 0.35%
2074 0.84% 0.44%
2073 0.85% 0.45%
2072 0.86% 0.47%
2071 0.87% 0.51%
2070 0.89% 0.53%
2069 0.9% 0.59%
2068 0.92% 0.64%
2067 0.93% 0.65%
2066 0.95% 0.66%
2065 0.96% 0.66%
2064 0.98% 0.67%
2063 0.99% 0.77%
2062 1.01% 0.73%
2061 1.03% 0.79%
2060 1.05% 0.79%
2059 1.07% 0.84%
2058 1.09% 0.86%
2057 1.11% 0.9%
2056 1.13% 0.95%
2055 1.15% 0.93%
2054 1.16% 1.01%
2053 1.18% 1.06%
2052 1.19% 1.12%
2051 1.2% 1.12%
2050 1.2% 1.11%
2049 1.21% 1.19%
2048 1.21% 1.16%
2047 1.22% 1.26%
2046 1.22% 1.28%
2045 1.23% 1.37%
2044 1.23% 1.35%
2043 1.24% 1.37%
2042 1.24% 1.44%
2041 1.24% 1.5%
2040 1.23% 1.5%
2039 1.24% 1.47%
2038 1.24% 1.54%
2037 1.24% 1.59%
2036 1.25% 1.65%
2035 1.26% 1.65%
2034 1.28% 1.69%
2033 1.3% 1.78%
2032 1.32% 1.81%
2031 1.35% 1.81%
2030 1.52% 1.85%
2029 1.75% 1.83%
2028 2.2% 1.97%
2027 2.86% 1.98%
2026 3.59% 2.03%
2025 4.04% 2.06%
2024 4.6% 2.15%
2023 6.74% 2.22%
2022 5.11% 2.25%
2021 -0.49% 2.3%
2020 -1.5% 2.34%
2019 -0.14% 2.35%
2018 1.33% 2.38%
2017 3.34% 2.41%
2016 4.92% 2.38%
2015 4.56% 2.35%
2014 4.4% 2.42%
2013 8.09% 2.49%
2012 15.3% 2.56%
2011 11.6% 2.64%
2010 2.71% 2.76%
2009 2.21% 2.73%
2008 2.19% 2.53%
2007 2.2% 2.22%
2006 2.24% 2.23%
2005 2.29% 2.73%
2004 1.74% 3.44%
2003 1.14% 4.15%
2002 1.17% 5.94%
2001 1.23% 6.08%
2000 1.3% 2.44%
1999 1.37% 0.52%
1998 1.45% 0.99%
1997 1.57% 1.3%
1996 1.72% 0.48%
1995 1.86% 0.15%
1994 2.98% 0.38%
1993 4.3% -0.22%
1992 4.69% -1.88%
1991 4.96% 1.18%
1990 5.23% 4.04%
1989 5.52% 2.53%
1988 5.83% 2.74%
1987 6.2% 2.72%
1986 6.63% 2.47%
1985 6.23% 2.24%
1984 5.61% 2.21%
1983 5.71% 2.16%
1982 5.71% 2.07%
1981 5.6% 2.04%
1980 5.49% 2.01%
1979 5.42% 1.97%
1978 5.26% 1.95%
1977 4.99% 1.87%
1976 4.6% 1.82%
1975 4.27% 1.86%
1974 3.58% 1.87%
1973 2.94% 1.87%
1972 2.86% 1.85%
1971 2.78% 1.88%
1970 2.7% 1.91%
1969 2.62% 1.91%
1968 2.52% 1.92%
1967 2.42% 1.9%
1966 2.32% 1.86%
1965 2.21% 1.83%
1964 2.1% 1.77%
1963 1.98% 1.71%
1962 1.87% 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/oman/sierra-leone | CC BY

In 2025, the population of Oman grew by 4.04%, while Sierra Leone's population grew by 2.06%.

Live population counters

Oman Sierra Leone
Current population
5775345
9090531
Population rank 118/197 100/197
Percent of world population 0.07% 0.11%
One net population change
2.47 minutes
2.96 minutes
One birth every
5.93 minutes
2.02 minutes
One death every
52.3 minutes
7.41 minutes
Daily growth/decline +584 +487
Annual growth/decline +213,153 +177,772
Annual growth/decline rate +4.04% +2.06%
Population growth rate rank 3/197 47/197
One migration net change every
4.63 minutes
46.6 minutes
Annual migration change +113,734 -11,309
Net migration rank 15/196 136/196
Foreign-born residents 2,283,366 49,997
Foreign-born residents rank 33/195 151/195
Foreign-born share of population 43.2% 0.6%
Foreign-born share rank 11/195 174/195

Natural population change vs migration

Oman
Natural

Migration
Sierra Leone
Natural

Migration
1x
Year Population change
Oman Sierra Leone
Natural Migration Natural Migration
2025 - 113,734 - -11,309
2024 78,557 154,219 189,234 -11,000
2023 75,467 156,285 188,788 -4,000
2022 67,278 339,063 186,625 -4,000
2021 69,991 -16,726 183,326 -1,544
2020 74,224 -171,635 181,015 1,292
2019 77,394 -117,480 181,068 -2,238
2018 79,438 -52,630 178,772 -2,741
2017 82,408 11,751 173,259 1,234
2016 81,350 117,538 168,784 4,657
2015 79,241 133,842 162,275 -356
2014 76,258 75,557 160,137 485
2013 71,905 113,335 161,265 2,773
2012 65,572 322,812 160,915 988
2011 59,689 492,609 158,858 6,895
2010 57,619 28,717 155,338 7,983
2009 52,007 7,226 152,669 18,145
2008 47,146 9,877 149,855 1,182
2007 44,207 11,478 145,740 -6,042
2006 43,969 11,103 144,127 -34,052
2005 44,688 10,231 137,234 -1,805
2004 45,651 9,394 132,661 23,897
2003 46,273 -19,265 130,312 69,185
2002 46,397 -20,098 126,429 86,578
2001 46,651 -19,103 116,647 227,791
2000 47,208 -18,588 110,754 83,013
1999 48,053 -18,235 102,295 -84,926
1998 48,654 -17,626 103,906 -76,766
1997 49,510 -16,998 105,433 -48,437
1996 50,362 -15,286 104,140 -52,110
1995 51,139 -13,418 100,885 -112,857
1994 52,337 -12,665 101,486 -77,371
1993 53,439 27,204 103,317 -95,476
1992 54,471 31,756 103,251 -129,565
1991 55,382 31,927 105,477 -238,965
1990 56,000 31,722 100,778 131,587
1989 56,202 31,528 98,298 -5,079
1988 56,142 31,456 96,344 9,470
1987 55,933 31,608 94,235 9,558
1986 55,324 32,289 90,902 7,992
1985 54,609 33,666 88,869 -7,873
1984 52,253 14,993 87,072 -8,708
1983 49,646 15,617 84,628 -8,783
1982 46,939 15,359 82,457 -11,379
1981 44,176 14,239 80,111 -12,699
1980 41,109 12,626 77,932 -11,641
1979 38,022 12,511 75,992 -13,095
1978 35,141 11,946 74,130 -13,073
1977 32,342 10,554 71,663 -12,399
1976 30,032 8,299 69,506 -15,686
1975 27,699 5,632 67,560 -13,058
1974 25,543 4,880 65,357 -11,473
1973 24,195 -2,996 62,443 -9,322
1972 22,968 -2,996 60,279 -8,267
1971 21,973 -2,996 58,484 -8,162
1970 20,893 -2,996 56,513 -4,957
1969 19,949 -2,996 54,768 -4,485
1968 18,962 -2,996 53,126 -3,743
1967 17,990 -2,996 51,734 -2,819
1966 17,030 -2,996 49,486 -2,911
1965 16,103 -2,996 47,223 -1,851
1964 15,205 -2,996 45,487 -2,308
1963 14,283 -2,996 43,569 -2,480
1962 13,485 -2,996 41,603 -2,658
1961 12,690 -2,996 40,022 -2,947
1960 12,034 -2,996 38,192 -3,528

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

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

Over the last 10 years, 58% of the population change in Oman is from natural causes (a gain of 765,348 people) and 42% is from migration (a gain of 554,227 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, 2,283,366 residents or 43.2% of the population were not native-born in Oman, compared to 49,997 people or 0.6% in Sierra Leone.

Biggest cities by population

Oman
City Population
Muscat 1.42M
Seeb 471K
Salalah 332K
Nizwa 83.5K
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/oman/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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