The latest officially reported population of Mauritania was 5,315,065 in 2025 vs 180,149 people in Saint Lucia in 2025. In 2026, based on the adjusted UN estimation, the current Mauritania's population is 5,539,189 people compared to 180,676 in Saint Lucia.
Population statistics:
- Mauritania's population is 30.7 times bigger than Saint Lucia's.
- Mauritania is ranked the 123rd most populous country in the world, while Saint Lucia is the 178th.
- The countries together account for 0.07% of the world: 0.07% for Mauritania vs 0.002% for Saint Lucia.
- For the last 10 years, Mauritania has had an average growth rate of +2.98% per year vs +0.31% in Saint Lucia.
- Since 2006, the population of Mauritania has increased from 3.01M people to 5.54M (83.8% growth), while Saint Lucia has grown from 167K to 181K (8.42% growth).
Mauritania vs Saint Lucia: population by year and forecast
| Year | Population | |
|---|---|---|
Mauritania
|
Saint Lucia
|
|
| 2100 | 17,302,938 | 108,837 |
| 2099 | 17,195,692 | 109,902 |
| 2098 | 17,083,078 | 110,987 |
| 2097 | 16,968,365 | 112,079 |
| 2096 | 16,850,394 | 113,197 |
| 2095 | 16,732,430 | 114,352 |
| 2094 | 16,610,512 | 115,520 |
| 2093 | 16,485,880 | 116,712 |
| 2092 | 16,359,440 | 117,943 |
| 2091 | 16,229,167 | 119,217 |
| 2090 | 16,097,149 | 120,487 |
| 2089 | 15,962,562 | 121,795 |
| 2088 | 15,824,899 | 123,153 |
| 2087 | 15,683,760 | 124,518 |
| 2086 | 15,541,281 | 125,900 |
| 2085 | 15,397,701 | 127,292 |
| 2084 | 15,251,533 | 128,725 |
| 2083 | 15,102,125 | 130,153 |
| 2082 | 14,952,194 | 131,599 |
| 2081 | 14,799,309 | 133,075 |
| 2080 | 14,645,548 | 134,563 |
| 2079 | 14,490,500 | 136,058 |
| 2078 | 14,331,284 | 137,536 |
| 2077 | 14,170,045 | 139,033 |
| 2076 | 14,007,555 | 140,538 |
| 2075 | 13,843,393 | 142,015 |
| 2074 | 13,678,579 | 143,519 |
| 2073 | 13,512,182 | 144,999 |
| 2072 | 13,343,946 | 146,447 |
| 2071 | 13,172,876 | 147,876 |
| 2070 | 13,002,521 | 149,289 |
| 2069 | 12,830,090 | 150,694 |
| 2068 | 12,657,711 | 152,083 |
| 2067 | 12,482,299 | 153,458 |
| 2066 | 12,306,495 | 154,825 |
| 2065 | 12,131,679 | 156,135 |
| 2064 | 11,954,090 | 157,438 |
| 2063 | 11,778,351 | 158,683 |
| 2062 | 11,601,323 | 159,905 |
| 2061 | 11,424,089 | 161,106 |
| 2060 | 11,246,850 | 162,327 |
| 2059 | 11,067,732 | 163,483 |
| 2058 | 10,887,645 | 164,600 |
| 2057 | 10,709,500 | 165,696 |
| 2056 | 10,532,648 | 166,752 |
| 2055 | 10,354,318 | 167,809 |
| 2054 | 10,175,517 | 168,844 |
| 2053 | 9,995,645 | 169,865 |
| 2052 | 9,815,104 | 170,854 |
| 2051 | 9,635,288 | 171,791 |
| 2050 | 9,457,400 | 172,723 |
| 2049 | 9,279,576 | 173,613 |
| 2048 | 9,100,595 | 174,493 |
| 2047 | 8,923,220 | 175,320 |
| 2046 | 8,745,286 | 176,064 |
| 2045 | 8,568,910 | 176,768 |
| 2044 | 8,393,773 | 177,462 |
| 2043 | 8,218,850 | 178,075 |
| 2042 | 8,044,865 | 178,659 |
| 2041 | 7,873,599 | 179,227 |
| 2040 | 7,703,561 | 179,727 |
| 2039 | 7,534,623 | 180,191 |
| 2038 | 7,366,187 | 180,634 |
| 2037 | 7,199,542 | 181,001 |
| 2036 | 7,033,866 | 181,267 |
| 2035 | 6,869,186 | 181,460 |
| 2034 | 6,705,635 | 181,613 |
| 2033 | 6,543,505 | 181,676 |
| 2032 | 6,383,229 | 181,680 |
| 2031 | 6,225,030 | 181,614 |
| 2030 | 6,068,395 | 181,477 |
| 2029 | 5,914,109 | 181,299 |
| 2028 | 5,761,715 | 181,079 |
| 2027 | 5,611,635 | 180,826 |
| 2026 | 5,462,675 | 180,519 |
| 2025 | 5,315,065 | 180,149 |
| 2024 | 5,169,395 | 179,744 |
| 2023 | 5,022,441 | 179,285 |
| 2022 | 4,875,637 | 178,781 |
| 2021 | 4,734,874 | 178,522 |
| 2020 | 4,600,131 | 178,250 |
| 2019 | 4,467,708 | 177,661 |
| 2018 | 4,337,685 | 177,017 |
| 2017 | 4,210,600 | 176,342 |
| 2016 | 4,086,657 | 175,646 |
| 2015 | 3,965,959 | 174,905 |
| 2014 | 3,848,514 | 174,138 |
| 2013 | 3,734,318 | 173,369 |
| 2012 | 3,619,034 | 172,587 |
| 2011 | 3,502,811 | 171,801 |
| 2010 | 3,390,965 | 170,906 |
| 2009 | 3,284,448 | 169,869 |
| 2008 | 3,183,269 | 168,808 |
| 2007 | 3,093,059 | 167,758 |
| 2006 | 3,013,660 | 166,639 |
| 2005 | 2,939,059 | 165,450 |
| 2004 | 2,868,664 | 164,239 |
| 2003 | 2,802,046 | 162,976 |
| 2002 | 2,738,655 | 161,641 |
| 2001 | 2,678,760 | 160,237 |
| 2000 | 2,613,441 | 158,616 |
| 1999 | 2,541,698 | 156,702 |
| 1998 | 2,474,651 | 154,677 |
| 1997 | 2,411,306 | 152,569 |
| 1996 | 2,358,188 | 150,436 |
| 1995 | 2,312,017 | 148,208 |
| 1994 | 2,249,454 | 145,890 |
| 1993 | 2,174,328 | 143,726 |
| 1992 | 2,088,135 | 141,617 |
| 1991 | 2,009,738 | 139,520 |
| 1990 | 1,951,878 | 137,857 |
| 1989 | 1,903,048 | 136,512 |
| 1988 | 1,855,859 | 135,000 |
| 1987 | 1,803,014 | 133,227 |
| 1986 | 1,751,835 | 131,239 |
| 1985 | 1,702,107 | 129,159 |
| 1984 | 1,653,693 | 127,067 |
| 1983 | 1,606,746 | 125,044 |
| 1982 | 1,561,176 | 123,087 |
| 1981 | 1,516,877 | 121,166 |
| 1980 | 1,474,043 | 119,290 |
| 1979 | 1,432,758 | 117,528 |
| 1978 | 1,392,713 | 115,834 |
| 1977 | 1,353,768 | 114,135 |
| 1976 | 1,315,336 | 112,425 |
| 1975 | 1,277,330 | 110,725 |
| 1974 | 1,240,188 | 109,076 |
| 1973 | 1,203,838 | 107,498 |
| 1972 | 1,168,355 | 106,002 |
| 1971 | 1,133,702 | 104,564 |
| 1970 | 1,099,806 | 103,165 |
| 1969 | 1,066,754 | 101,879 |
| 1968 | 1,034,739 | 100,675 |
| 1967 | 1,003,843 | 99,504 |
| 1966 | 974,157 | 98,463 |
| 1965 | 945,838 | 97,493 |
| 1964 | 918,955 | 96,505 |
| 1963 | 893,423 | 95,519 |
| 1962 | 869,184 | 94,505 |
| 1961 | 846,167 | 93,490 |
| 1960 | 824,298 | 92,585 |
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/mauritania/saint-lucia | CC BY 
From 2006 to 2016, the population of Mauritania increased by 1,072,997 people (a 35.6% growth), while Saint Lucia gained 9,007 people (a 5.41% growth).
For the next 10 years, from 2016 to 2026, Mauritania gained 1,452,532 people (a 35.5% growth), while Saint Lucia's population increased by 5,030 people (a 2.86% growth).
Mauritania was ranked 132nd most populous country in 2006 and is 123rd in 2026. Saint Lucia was ranked 177th in 2006 and ranked 178th now.
The UN's World Population Prospects forecasts that in 24 years (in 2050) Mauritania's population will grow by 70.7% to 9,457,400 people with a rank change from 123rd to 103rd. The population of Saint Lucia will decrease by 4.4% to 172,723 people and rank change from 178th to 179th.
Mauritania is projected to reach its peak in 2100 at 17.3M people compared to the peak of 182K people in 2032 for Saint Lucia.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Mauritania
|
Saint Lucia
|
|
| 2100 | 0.62% | -0.97% |
| 2099 | 0.66% | -0.98% |
| 2098 | 0.68% | -0.97% |
| 2097 | 0.7% | -0.99% |
| 2096 | 0.7% | -1.01% |
| 2095 | 0.73% | -1.01% |
| 2094 | 0.76% | -1.02% |
| 2093 | 0.77% | -1.04% |
| 2092 | 0.8% | -1.07% |
| 2091 | 0.82% | -1.05% |
| 2090 | 0.84% | -1.07% |
| 2089 | 0.87% | -1.1% |
| 2088 | 0.9% | -1.1% |
| 2087 | 0.92% | -1.1% |
| 2086 | 0.93% | -1.09% |
| 2085 | 0.96% | -1.11% |
| 2084 | 0.99% | -1.1% |
| 2083 | 1% | -1.1% |
| 2082 | 1.03% | -1.11% |
| 2081 | 1.05% | -1.11% |
| 2080 | 1.07% | -1.1% |
| 2079 | 1.11% | -1.07% |
| 2078 | 1.14% | -1.08% |
| 2077 | 1.16% | -1.07% |
| 2076 | 1.19% | -1.04% |
| 2075 | 1.2% | -1.05% |
| 2074 | 1.23% | -1.02% |
| 2073 | 1.26% | -0.99% |
| 2072 | 1.3% | -0.97% |
| 2071 | 1.31% | -0.95% |
| 2070 | 1.34% | -0.93% |
| 2069 | 1.36% | -0.91% |
| 2068 | 1.41% | -0.9% |
| 2067 | 1.43% | -0.88% |
| 2066 | 1.44% | -0.84% |
| 2065 | 1.49% | -0.83% |
| 2064 | 1.49% | -0.78% |
| 2063 | 1.53% | -0.76% |
| 2062 | 1.55% | -0.75% |
| 2061 | 1.58% | -0.75% |
| 2060 | 1.62% | -0.71% |
| 2059 | 1.65% | -0.68% |
| 2058 | 1.66% | -0.66% |
| 2057 | 1.68% | -0.63% |
| 2056 | 1.72% | -0.63% |
| 2055 | 1.76% | -0.61% |
| 2054 | 1.8% | -0.6% |
| 2053 | 1.84% | -0.58% |
| 2052 | 1.87% | -0.55% |
| 2051 | 1.88% | -0.54% |
| 2050 | 1.92% | -0.51% |
| 2049 | 1.97% | -0.5% |
| 2048 | 1.99% | -0.47% |
| 2047 | 2.03% | -0.42% |
| 2046 | 2.06% | -0.4% |
| 2045 | 2.09% | -0.39% |
| 2044 | 2.13% | -0.34% |
| 2043 | 2.16% | -0.33% |
| 2042 | 2.18% | -0.32% |
| 2041 | 2.21% | -0.28% |
| 2040 | 2.24% | -0.26% |
| 2039 | 2.29% | -0.25% |
| 2038 | 2.31% | -0.2% |
| 2037 | 2.36% | -0.15% |
| 2036 | 2.4% | -0.11% |
| 2035 | 2.44% | -0.08% |
| 2034 | 2.48% | -0.03% |
| 2033 | 2.51% | -0.002% |
| 2032 | 2.54% | 0.04% |
| 2031 | 2.58% | 0.08% |
| 2030 | 2.61% | 0.1% |
| 2029 | 2.64% | 0.12% |
| 2028 | 2.67% | 0.14% |
| 2027 | 2.73% | 0.17% |
| 2026 | 2.78% | 0.21% |
| 2025 | 2.82% | 0.23% |
| 2024 | 2.93% | 0.26% |
| 2023 | 3.01% | 0.28% |
| 2022 | 2.97% | 0.15% |
| 2021 | 2.93% | 0.15% |
| 2020 | 2.96% | 0.33% |
| 2019 | 3% | 0.36% |
| 2018 | 3.02% | 0.38% |
| 2017 | 3.03% | 0.4% |
| 2016 | 3.04% | 0.42% |
| 2015 | 3.05% | 0.44% |
| 2014 | 3.06% | 0.44% |
| 2013 | 3.19% | 0.45% |
| 2012 | 3.32% | 0.46% |
| 2011 | 3.3% | 0.52% |
| 2010 | 3.24% | 0.61% |
| 2009 | 3.18% | 0.63% |
| 2008 | 2.92% | 0.63% |
| 2007 | 2.63% | 0.67% |
| 2006 | 2.54% | 0.72% |
| 2005 | 2.45% | 0.74% |
| 2004 | 2.38% | 0.77% |
| 2003 | 2.31% | 0.83% |
| 2002 | 2.24% | 0.88% |
| 2001 | 2.5% | 1.02% |
| 2000 | 2.82% | 1.22% |
| 1999 | 2.71% | 1.31% |
| 1998 | 2.63% | 1.38% |
| 1997 | 2.25% | 1.42% |
| 1996 | 2% | 1.5% |
| 1995 | 2.78% | 1.59% |
| 1994 | 3.46% | 1.51% |
| 1993 | 4.13% | 1.49% |
| 1992 | 3.9% | 1.5% |
| 1991 | 2.96% | 1.21% |
| 1990 | 2.57% | 0.99% |
| 1989 | 2.54% | 1.12% |
| 1988 | 2.93% | 1.33% |
| 1987 | 2.92% | 1.51% |
| 1986 | 2.92% | 1.61% |
| 1985 | 2.93% | 1.65% |
| 1984 | 2.92% | 1.62% |
| 1983 | 2.92% | 1.59% |
| 1982 | 2.92% | 1.59% |
| 1981 | 2.91% | 1.57% |
| 1980 | 2.88% | 1.5% |
| 1979 | 2.88% | 1.46% |
| 1978 | 2.88% | 1.49% |
| 1977 | 2.92% | 1.52% |
| 1976 | 2.98% | 1.54% |
| 1975 | 2.99% | 1.51% |
| 1974 | 3.02% | 1.47% |
| 1973 | 3.04% | 1.41% |
| 1972 | 3.06% | 1.38% |
| 1971 | 3.08% | 1.36% |
| 1970 | 3.1% | 1.26% |
| 1969 | 3.09% | 1.2% |
| 1968 | 3.08% | 1.18% |
| 1967 | 3.05% | 1.06% |
| 1966 | 2.99% | 0.99% |
| 1965 | 2.93% | 1.02% |
| 1964 | 2.86% | 1.03% |
| 1963 | 2.79% | 1.07% |
| 1962 | 2.72% | 1.09% |
| 1961 | 2.65% | 0.98% |
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/mauritania/saint-lucia | CC BY
In 2025, the population of Mauritania grew by 2.82%, while Saint Lucia's population grew by 0.23%.
Live population counters
|
Mauritania
|
Saint Lucia
|
|
|---|---|---|
| Current population |
5539189
|
180676
|
| Population rank | 123/197 | 178/197 |
| Percent of world population | 0.07% | 0.002% |
| One net population change |
3.62 minutes
|
21.7 hours
|
| One birth every |
2.99 minutes
|
4.35 hours
|
| One death every |
18.8 minutes
|
5.6 hours
|
| Daily growth/decline | +399 | +1 |
| Annual growth/decline | +145,670 | +405 |
| Annual growth/decline rate | +2.82% | +0.23% |
| Population growth rate rank | 18/197 | 150/197 |
| One migration net change every |
1.74 hours
|
2.27 weeks
|
| Annual migration change | -5,044 | -23 |
| Net migration rank | 115/196 | 79/196 |
| Foreign-born residents | 195,937 | 8,079 |
| Foreign-born residents rank | 113/195 | 180/195 |
| Foreign-born share of population | 3.8% | 4.5% |
| Foreign-born share rank | 107/195 | 98/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Mauritania
|
Saint Lucia
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | -5,044 | - | -23 |
| 2024 | 147,927 | -2,185 | 449 | -7 |
| 2023 | 145,164 | 2,999 | 475 | 0 |
| 2022 | 142,451 | 2,999 | 530 | 0 |
| 2021 | 137,557 | -1,483 | -15 | 0 |
| 2020 | 134,899 | -1,483 | 562 | 0 |
| 2019 | 134,460 | -3,019 | 609 | 0 |
| 2018 | 131,584 | -2,987 | 694 | -18 |
| 2017 | 128,562 | -3,001 | 724 | -38 |
| 2016 | 125,342 | -3,008 | 767 | -57 |
| 2015 | 122,092 | -3,019 | 841 | -69 |
| 2014 | 118,792 | -2,980 | 852 | -90 |
| 2013 | 115,558 | -2,987 | 892 | -114 |
| 2012 | 113,489 | 4,515 | 916 | -135 |
| 2011 | 111,165 | 3,272 | 934 | -150 |
| 2010 | 108,121 | 1,128 | 1,176 | -170 |
| 2009 | 105,273 | -1,481 | 1,349 | -276 |
| 2008 | 102,432 | -3,860 | 1,369 | -331 |
| 2007 | 98,895 | -17,048 | 1,422 | -352 |
| 2006 | 94,991 | -18,033 | 1,511 | -339 |
| 2005 | 90,940 | -18,693 | 1,553 | -358 |
| 2004 | 87,578 | -19,042 | 1,615 | -378 |
| 2003 | 83,804 | -19,104 | 1,694 | -397 |
| 2002 | 80,993 | -18,903 | 1,774 | -409 |
| 2001 | 78,769 | -21,067 | 1,860 | -416 |
| 2000 | 75,929 | -2,997 | 1,967 | -176 |
| 1999 | 73,554 | -2,999 | 2,389 | -361 |
| 1998 | 72,045 | -8,504 | 2,294 | -268 |
| 1997 | 71,327 | -8,187 | 2,709 | -519 |
| 1996 | 71,939 | -28,840 | 2,649 | -571 |
| 1995 | 72,244 | -22,997 | 3,019 | -638 |
| 1994 | 70,570 | 5,304 | 2,976 | -721 |
| 1993 | 68,167 | 6,217 | 2,899 | -824 |
| 1992 | 63,501 | 34,505 | 2,981 | -834 |
| 1991 | 61,782 | -2,997 | 3,009 | -963 |
| 1990 | 59,934 | -3,000 | 3,061 | -1,790 |
| 1989 | 58,666 | -17,941 | 3,146 | -1,734 |
| 1988 | 56,654 | -2,997 | 3,229 | -1,606 |
| 1987 | 55,037 | -2,998 | 3,351 | -1,423 |
| 1986 | 53,313 | -2,998 | 3,496 | -1,453 |
| 1985 | 52,125 | -2,998 | 3,591 | -1,465 |
| 1984 | 50,705 | -2,998 | 3,526 | -1,468 |
| 1983 | 49,187 | -2,998 | 3,443 | -1,462 |
| 1982 | 47,947 | -2,998 | 3,360 | -1,423 |
| 1981 | 46,641 | -2,998 | 3,306 | -1,403 |
| 1980 | 45,026 | -2,997 | 3,275 | -1,422 |
| 1979 | 43,537 | -2,997 | 3,301 | -1,625 |
| 1978 | 42,539 | -2,998 | 3,340 | -1,635 |
| 1977 | 41,352 | -2,999 | 3,240 | -1,543 |
| 1976 | 40,149 | -1,645 | 3,166 | -1,444 |
| 1975 | 38,975 | -1,472 | 3,126 | -1,454 |
| 1974 | 38,106 | -1,321 | 3,106 | -1,472 |
| 1973 | 37,122 | -1,201 | 3,033 | -1,513 |
| 1972 | 36,184 | -1,139 | 3,028 | -1,566 |
| 1971 | 35,279 | -1,014 | 3,046 | -1,625 |
| 1970 | 34,382 | -855 | 3,093 | -1,709 |
| 1969 | 33,252 | -688 | 3,143 | -1,954 |
| 1968 | 32,029 | -565 | 3,154 | -1,937 |
| 1967 | 30,853 | -514 | 3,113 | -1,997 |
| 1966 | 29,502 | -466 | 3,028 | -2,065 |
| 1965 | 28,028 | -434 | 3,042 | -2,067 |
| 1964 | 26,565 | -390 | 3,074 | -2,079 |
| 1963 | 25,250 | -362 | 3,048 | -2,060 |
| 1962 | 23,927 | -342 | 3,124 | -2,082 |
| 1961 | 22,781 | -332 | 3,173 | -2,189 |
| 1960 | 21,604 | -318 | 3,202 | -2,366 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/mauritania/saint-lucia | CC BY
Over the last 10 years, 99% of the population change in Mauritania is from natural causes (a gain of 1,350,038 people) and 1.04% is from migration (a loss of 14,187 people). In Saint Lucia 96.8% is from natural causes (a gain of 5,636 people) and 3.24% is from migration (a loss of 189 people).
As of 2024, 195,937 residents or 3.8% of the population were not native-born in Mauritania, compared to 8,079 people or 4.5% in Saint Lucia.
Biggest cities by population
|
Mauritania
|
|
|---|---|
| City | Population |
| Nouakchott | 1.45M |
| Rosso | 61.2K |
|
Saint Lucia
|
|
|---|---|
| City | Population |
| Castries | 20K |
| Vieux Fort | 15.8K |
Compare countries by 7 more topics
Population differences between Mauritania and Saint Lucia
|
Mauritania
|
Saint Lucia
|
|
|---|---|---|
| Life expectancy | 69.2 years | 73.2 years |
| Average age | 23.1 years | 36.8 years |
| Median age | 18.5 years | 35.7 years |
| Male:Female ratio | 49.1:50.9 | 49.3:50.7 |
| Fertility rate | 4.63 births per woman | 1.39 births per woman |
| Population density | 13.7 ppl/mi² | 766 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/mauritania/saint-lucia | 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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