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Fertility & birth rates in Japan and Mauritania

Updated on by Georank team

Japan has an annual birth rate of 6 births per 1,000 people, compared to 34.4 for Mauritania. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 1.2 in Japan and 4.7 in Mauritania — 291.4% difference.

1960 vs 2023, the fertility rate has decreased by 40% in Japan and by 23.6% in Mauritania — in 1960, it was 2 and 6.15, respectively.

  • Japan is ranked 192/196 by birth rate compared to 13/196 for Mauritania.
  • The mean age for first-time mothers is 30.7 years in Japan, compared to 21.8 years in Mauritania.
  • The mean age at childbearing (for all the births, not just the first) is 32.2 in Japan — it's 30.2 in Mauritania.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 1.74 in Japan vs 88.9 in Mauritania.
  • In Japan, 18.6% of the population is composed of women of reproductive age (15-49), compared to 24.3% in Mauritania.

Fertility rate in Japan vs Mauritania by year

Japan
Mauritania
1x
Year Fertility rate
Japan Mauritania
2023 1.2 4.7
2022 1.26 4.77
2021 1.3 4.85
2020 1.33 4.91
2019 1.36 4.98
2018 1.42 5.04
2017 1.43 5.11
2016 1.44 5.16
2015 1.45 5.21
2014 1.42 5.26
2013 1.43 5.32
2012 1.41 5.35
2011 1.39 5.38
2010 1.39 5.38
2009 1.37 5.41
2008 1.37 5.44
2007 1.34 5.43
2006 1.32 5.4
2005 1.26 5.38
2004 1.29 5.37
2003 1.29 5.36
2002 1.32 5.37
2001 1.33 5.41
2000 1.36 5.46
1999 1.34 5.52
1998 1.38 5.62
1997 1.39 5.74
1996 1.43 5.86
1995 1.42 5.96
1994 1.5 6.06
1993 1.46 6.09
1992 1.5 6.13
1991 1.53 6.16
1990 1.54 6.18
1989 1.57 6.2
1988 1.66 6.21
1987 1.69 6.27
1986 1.72 6.34
1985 1.76 6.42
1984 1.81 6.48
1983 1.8 6.54
1982 1.77 6.59
1981 1.74 6.64
1980 1.75 6.67
1979 1.77 6.7
1978 1.79 6.73
1977 1.8 6.74
1976 1.85 6.73
1975 1.91 6.71
1974 2.05 6.73
1973 2.14 6.72
1972 2.14 6.71
1971 2.16 6.7
1970 2.13 6.68
1969 2.13 6.64
1968 2.13 6.6
1967 2.23 6.57
1966 1.58 6.52
1965 2.14 6.44
1964 2.05 6.37
1963 2 6.31
1962 1.98 6.24
1961 1.96 6.2
1960 2 6.15

Data sources: World Bank | Health (1960–2023, retrieved 2026-04-06).

GeoRank.org/birth-rate/japan/mauritania | CC BY

According to the latest available data on birth rates, the fertility rate in Japan was 1.2 children per woman in 2023, compared to 4.7 in Mauritania in 2023. The replacement level is considered to be 2.1 children per woman.

Check Japan vs Mauritania population clock for a dynamic visualization of the changing population.

Natural population change by year

Japan
Mauritania
1x
Year Natural population change
Japan Mauritania
2023 -871,617 145,164
2022 -825,825 142,451
2021 -640,976 137,557
2020 -542,923 134,899
2019 -531,858 134,460
2018 -456,520 131,584
2017 -406,310 128,562
2016 -343,106 125,342
2015 -292,424 122,092
2014 -267,279 118,792
2013 -242,146 115,558
2012 -229,733 113,489
2011 -204,533 111,165
2010 -128,070 108,121
2009 -76,828 105,273
2008 -51,225 102,432
2007 -25,600 98,895
2006 12,785 94,991
2005 -25,554 90,940
2004 76,656 87,578
2003 114,946 83,804
2002 178,423 80,993
2001 203,438 78,769
2000 228,317 75,929
1999 202,610 73,554
1998 265,440 72,045
1997 277,325 71,327
1996 314,392 71,939
1995 276,039 72,244
1994 363,017 70,570
1993 312,073 68,167
1992 360,833 63,501
1991 396,685 61,782
1990 407,478 59,934
1989 467,662 58,666
1988 527,085 56,654
1987 598,138 55,037
1986 631,706 53,313
1985 676,687 52,125
1984 756,523 50,705
1983 775,495 49,187
1982 805,664 47,947
1981 811,861 46,641
1980 864,372 45,026
1979 950,298 43,537
1978 1,011,234 42,539
1977 1,070,397 41,352
1976 1,127,750 40,149
1975 1,204,989 38,975
1974 1,332,960 38,106
1973 1,391,449 37,122
1972 1,372,006 36,184
1971 1,331,782 35,279
1970 1,230,496 34,382
1969 1,195,962 33,252
1968 1,191,930 32,029
1967 1,258,475 30,853
1966 682,072 29,502
1965 1,126,448 28,028
1964 1,046,553 26,565
1963 987,770 25,250
1962 901,864 23,927
1961 893,522 22,781
1960 894,874 21,604

Data sources: World Bank | Health (1960–2023, retrieved 2026-04-06).

GeoRank.org/birth-rate/japan/mauritania | CC BY

The chart above illustrates the comparison of the absolute yearly changes in population resulting from births and deaths.

Excluding migration, the natural population change due to births and deaths from 2022 to 2023 was -0.7% in Japan and +2.89% in Mauritania.

For the past 10 years, the annual natural population change has been -0.41% in Japan and +3% in Mauritania.

Birth rate in Japan vs Mauritania by year

Japan
Mauritania

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Japan Mauritania
2023 6 34.4
2022 6.3 34.8
2021 6.6 35.3
2020 6.8 35.7
2019 7 36.2
2018 7.4 36.6
2017 7.6 37
2016 7.8 37.4
2015 8 37.8
2014 8 38.1
2013 8.2 38.5
2012 8.2 38.7
2011 8.3 38.9
2010 8.5 38.9
2009 8.5 39
2008 8.7 39.1
2007 8.6 39
2006 8.7 38.8
2005 8.4 38.4
2004 8.8 38.3
2003 8.9 37.9
2002 9.2 37.9
2001 9.3 38
2000 9.5 37.9
1999 9.4 38.1
1998 9.6 38.6
1997 9.5 39.4
1996 9.7 40.7
1995 9.6 41.5
1994 10 41.7
1993 9.6 41.7
1992 9.8 40.7
1991 9.9 41.3
1990 10 41.4
1989 10.2 41.8
1988 10.8 41.6
1987 11.1 41.9
1986 11.4 42.2
1985 11.9 42.8
1984 12.5 43.2
1983 12.7 43.6
1982 12.8 44
1981 13 44.4
1980 13.6 44.5
1979 14.2 44.7
1978 14.9 45.2
1977 15.5 45.4
1976 16.3 45.6
1975 17.1 45.8
1974 18.6 46.1
1973 19.4 46.4
1972 19.3 46.6
1971 19.2 47
1970 18.8 47.3
1969 18.5 47.5
1968 18.6 47.6
1967 19.4 47.8
1966 13.7 47.8
1965 18.6 47.6
1964 17.7 47.3
1963 17.3 47.1
1962 17 46.8
1961 16.9 46.6
1960 17.2 46.2

Data sources: World Bank | Health (1960–2023, retrieved 2026-04-06).

GeoRank.org/birth-rate/japan/mauritania | CC BY

The latest reported birth rate per 1,000 people in 2023 was 6 in Japan and 34.4 in Mauritania, compared with 17.2 and 46.2, respectively, in 1960.

Birth rate data compared

Japan Mauritania
Fertility rate 1.2 4.7
Fertility rate rank 183/196 11/196
Birth rate 6 34.4
Birth rate rank 192/196 13/196
Population change due to births and deaths -871,617 +145,164
Natural population change rank 195/196 70/196
Natural population change rate -0.7% +2.89%
Population growth -0.43% +2.93%
Population growth rank 185/197 17/197
Age at first childbirth 30.7 years 21.8 years
Average age at childbearing 32.2 years 30.2 years
Annual births per 1,000 women ages 15-19 1.46 86.2
Annual births per 1,000 women ages 20-29 40.5 175.8
Annual births per 1,000 women ages 30+ 10.5 81.9
Female of reproductive age (15-49), share of population 18.6% 24.3%
Any modern method of contraceptive prevalence among married women ages 15-49 52.8% 12.8%
Share of births attended by skilled health staff 99.8% 70.4%
Maternal mortality per live birth 0.003% 0.38%
Neonatal mortality rate (before reaching 28 days of age) 0.08% 2.15%
Infant mortality rate (before reaching 1 year of age) 0.18% 3.1%
Mortality rate before reaching 5 years of age 0.24% 3.78%
Life expectancy 85.1 years 69.2 years

Children 0-14 years as share of population

Japan
Factual

UN forecast
Mauritania
Factual

UN forecast
1x
Year Young
Japan Mauritania
2100 11.5% 21.5%
2099 11.5% 21.6%
2098 11.5% 21.8%
2097 11.5% 22%
2096 11.6% 22.1%
2095 11.6% 22.3%
2094 11.6% 22.5%
2093 11.7% 22.7%
2092 11.7% 22.9%
2091 11.8% 23.1%
2090 11.8% 23.3%
2089 11.8% 23.5%
2088 11.8% 23.7%
2087 11.9% 23.9%
2086 11.9% 24.1%
2085 11.8% 24.3%
2084 11.8% 24.5%
2083 11.8% 24.7%
2082 11.8% 25%
2081 11.7% 25.2%
2080 11.6% 25.4%
2079 11.6% 25.7%
2078 11.5% 25.9%
2077 11.4% 26.1%
2076 11.3% 26.4%
2075 11.2% 26.6%
2074 11.1% 26.8%
2073 11.1% 27.1%
2072 11% 27.3%
2071 10.9% 27.6%
2070 10.9% 27.9%
2069 10.8% 28.1%
2068 10.8% 28.4%
2067 10.8% 28.7%
2066 10.8% 29%
2065 10.8% 29.3%
2064 10.8% 29.6%
2063 10.8% 29.8%
2062 10.9% 30.1%
2061 10.9% 30.4%
2060 11% 30.7%
2059 11% 31.1%
2058 11.1% 31.4%
2057 11.1% 31.7%
2056 11.2% 32%
2055 11.2% 32.3%
2054 11.3% 32.6%
2053 11.3% 33%
2052 11.3% 33.3%
2051 11.3% 33.6%
2050 11.2% 33.9%
2049 11.2% 34.3%
2048 11.1% 34.6%
2047 11.1% 35%
2046 11% 35.3%
2045 10.9% 35.7%
2044 10.8% 36%
2043 10.7% 36.4%
2042 10.6% 36.7%
2041 10.5% 37.1%
2040 10.4% 37.4%
2039 10.3% 37.8%
2038 10.2% 38.1%
2037 10.1% 38.5%
2036 10.1% 38.8%
2035 10.1% 39.2%
2034 10.1% 39.5%
2033 10.1% 39.9%
2032 10.2% 40.2%
2031 10.3% 40.5%
2030 10.5% 40.8%
2029 10.6% 41.2%
2028 10.8% 41.5%
2027 11% 41.9%
2026 11.1% 42.2%
2025 11.3% 42.6%
2024 11.4% 42.7%
2023 11.6% 43%
2022 11.9% 43.4%
2021 12% 43.6%
2020 12.2% 43.8%
2019 12.4% 44%
2018 12.5% 44.1%
2017 12.6% 44.2%
2016 12.7% 44.2%
2015 12.8% 44.3%
2014 13% 44.2%
2013 13.1% 44.2%
2012 13.2% 44.1%
2011 13.3% 43.9%
2010 13.4% 43.9%
2009 13.5% 43.9%
2008 13.5% 44.1%
2007 13.6% 44.3%
2006 13.7% 44.2%
2005 13.8% 44.2%
2004 13.8% 44.2%
2003 13.9% 44.2%
2002 14.1% 44.2%
2001 14.2% 44.1%
2000 14.4% 44.2%
1999 14.6% 44.4%
1998 14.8% 44.6%
1997 15.1% 44.7%
1996 15.3% 44.6%
1995 15.6% 44.4%
1994 16% 44.3%
1993 16.4% 44.4%
1992 16.9% 44.9%
1991 17.4% 45.3%
1990 18% 45.4%
1989 18.8% 45.4%
1988 19.5% 45.3%
1987 20.3% 45.4%
1986 21% 45.5%
1985 21.7% 45.6%
1984 22.2% 45.7%
1983 22.6% 45.8%
1982 23.1% 45.8%
1981 23.3% 45.9%
1980 23.4% 45.9%
1979 23.7% 45.9%
1978 23.8% 45.8%
1977 23.9% 45.7%
1976 23.9% 45.6%
1975 23.8% 45.5%
1974 23.8% 45.4%
1973 23.6% 45.2%
1972 23.4% 44.9%
1971 23.3% 44.7%
1970 23.3% 44.4%
1969 23.4% 44%
1968 23.5% 43.6%
1967 23.8% 43.2%
1966 24.4% 42.8%
1965 25.1% 42.4%
1964 25.8% 42%
1963 26.8% 41.8%
1962 28% 41.8%
1961 29.1% 41.8%
1960 29.8% 41.8%

Data sources: World Bank | Health (1960–2024, retrieved 2026-04-06); United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10).

GeoRank.org/birth-rate/japan/mauritania | CC BY

Children aged 0-14 make up 11.4% of the population in Japan and 42.7% in Mauritania in 2024, compared to 18% and 45.4% respectively in 1990.

Demographics of Japan and Mauritania compared.

Fertility rates around the globe

1x

Data sources: World Bank | Health (1960–2023, retrieved 2026-04-06).

GeoRank.org/birth-rate/japan/mauritania | CC BY

Maternal mortality chart: Japan vs Mauritania

Japan
Mauritania
1x
Year Maternal mortality per 100K births
Japan Mauritania
2023 3 381
2022 5 385
2021 4 425
2020 4 413
2019 5 424
2018 5 437
2017 5 450
2016 5 456
2015 5 469
2014 5 484
2013 5 496
2012 6 496
2011 6 494
2010 6 499
2009 6 500
2008 6 506
2007 6 516
2006 7 521
2005 7 536
2004 7 557
2003 8 571
2002 8 590
2001 8 616
2000 9 644
1999 9 669
1998 10 698
1997 10 752
1996 11 813
1995 11 815
1994 11 809
1993 12 813
1992 13 811
1991 13 845
1990 14 858
1989 15 883
1988 16 887
1987 17 914
1986 18 961
1985 19 998

Data sources: World Bank | Gender (1985–2023, retrieved 2026-04-06).

GeoRank.org/birth-rate/japan/mauritania | CC BY

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 3 deaths per 100,000 live births in Japan, compared to 381 deaths in Mauritania.

Under-five mortality rates

Japan
Mauritania

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Japan Mauritania
2023 0.24% 3.78%
2022 0.24% 3.91%
2021 0.24% 4.03%
2020 0.24% 4.17%
2019 0.25% 4.3%
2018 0.25% 4.45%
2017 0.26% 4.59%
2016 0.27% 4.74%
2015 0.28% 4.89%
2014 0.29% 5.04%
2013 0.3% 5.17%
2012 0.31% 5.31%
2011 0.33% 5.45%
2010 0.33% 5.61%
2009 0.34% 5.79%
2008 0.34% 6.04%
2007 0.35% 6.35%
2006 0.36% 6.73%
2005 0.37% 7.18%
2004 0.39% 7.7%
2003 0.4% 8.25%
2002 0.41% 8.81%
2001 0.43% 9.35%
2000 0.45% 9.82%
1999 0.47% 10.2%
1998 0.5% 10.6%
1997 0.52% 10.8%
1996 0.55% 11%
1995 0.57% 11.1%
1994 0.59% 11.2%
1993 0.6% 11.2%
1992 0.61% 11.3%
1991 0.62% 11.4%
1990 0.63% 11.5%
1989 0.64% 11.8%
1988 0.66% 12.1%
1987 0.68% 12.6%
1986 0.71% 13.2%
1985 0.75% 13.8%
1984 0.79% 14.5%
1983 0.83% 15.1%
1982 0.88% 15.6%
1981 0.93% 16.1%
1980 0.99% 16.6%
1979 1.05% 17.1%
1978 1.11% 17.6%
1977 1.18% 18.2%
1976 1.25% 18.6%
1975 1.33% 18.9%
1974 1.41% 19%
1973 1.49% 19%
1972 1.57% 18.9%
1971 1.65% 18.9%
1970 1.75% 19%
1969 1.85% 19.4%
1968 1.96% 19.9%
1967 2.1% 20.6%
1966 2.26% 21.3%
1965 2.46% 22%
1964 2.7% 22.7%
1963 2.98% 23.4%
1962 3.29% 24%
1961 3.62% 24.7%
1960 3.97% 25.3%

Data sources: World Bank | Health (1960–2023, retrieved 2026-04-06).

GeoRank.org/birth-rate/japan/mauritania | CC BY

The chance that a newborn baby will die before reaching age five is 0.24% in Japan and 3.78% in Mauritania. Above is a chart with historical data on under-five mortality rates.

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Data sources:

  1. World Bank | Health (1960–2024, retrieved 2026-04-06)
  2. United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10)
  3. Central Intelligence Agency (CIA) (2025, retrieved 2026-02-20)

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