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Fertility & birth rates in Iceland and Tonga

Updated on by Georank team

Iceland has an annual birth rate of 11 births per 1,000 people, compared to 23.1 for Tonga. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 1.59 in Iceland and 3.13 in Tonga — 96.8% difference.

1960 vs 2023, the fertility rate has decreased by 62.9% in Iceland and by 53% in Tonga — in 1960, it was 4.29 and 6.65, respectively.

  • Iceland is ranked 132/196 by birth rate compared to 58/196 for Tonga.
  • The mean age for first-time mothers is 28.8 years in Iceland, compared to 24.9 years in Tonga.
  • The mean age at childbearing (for all the births, not just the first) is 31 in Iceland — it's 29.9 in Tonga.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 3.37 in Iceland vs 24.8 in Tonga.
  • In Iceland, 23.7% of the population is composed of women of reproductive age (15-49), compared to 25.6% in Tonga.

Fertility rate in Iceland vs Tonga by year

Iceland
Tonga
1x
Year Fertility rate
Iceland Tonga
2023 1.59 3.13
2022 1.59 3.17
2021 1.82 3.2
2020 1.72 3.23
2019 1.74 3.27
2018 1.71 3.33
2017 1.71 3.39
2016 1.74 3.46
2015 1.8 3.54
2014 1.93 3.62
2013 1.93 3.7
2012 2.04 3.77
2011 2.02 3.83
2010 2.2 3.88
2009 2.23 3.95
2008 2.15 4.01
2007 2.09 4.09
2006 2.08 4.14
2005 2.05 4.2
2004 2.04 4.19
2003 1.99 4.18
2002 1.93 4.14
2001 1.95 4.13
2000 2.08 4.16
1999 1.99 4.23
1998 2.05 4.31
1997 2.04 4.38
1996 2.12 4.46
1995 2.08 4.56
1994 2.14 4.66
1993 2.22 4.73
1992 2.21 4.79
1991 2.18 4.85
1990 2.3 4.93
1989 2.19 5.01
1988 2.26 5.1
1987 2.06 5.19
1986 1.92 5.27
1985 1.93 5.34
1984 2.08 5.41
1983 2.24 5.45
1982 2.27 5.5
1981 2.33 5.55
1980 2.48 5.6
1979 2.49 5.65
1978 2.35 5.68
1977 2.31 5.7
1976 2.52 5.73
1975 2.65 5.75
1974 2.66 5.77
1973 2.94 5.8
1972 3.09 5.86
1971 2.92 5.96
1970 2.81 6.07
1969 2.99 6.17
1968 3.06 6.23
1967 3.28 6.29
1966 3.59 6.35
1965 3.73 6.41
1964 3.88 6.46
1963 3.99 6.52
1962 3.98 6.57
1961 3.88 6.61
1960 4.29 6.65

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

GeoRank.org/birth-rate/iceland/tonga | CC BY

According to the latest available data on birth rates, the fertility rate in Iceland was 1.59 children per woman in 2023, compared to 3.13 in Tonga in 2023. The replacement level is considered to be 2.1 children per woman.

Check Iceland vs Tonga population clock for a dynamic visualization of the changing population.

Natural population change by year

Iceland
Tonga
1x
Year Natural population change
Iceland Tonga
2023 1,697 1,744
2022 1,719 1,772
2021 2,534 1,773
2020 2,199 1,816
2019 2,163 1,841
2018 1,975 1,873
2017 1,854 1,912
2016 1,711 1,989
2015 1,952 2,064
2014 2,324 2,135
2013 2,169 2,199
2012 2,566 2,255
2011 2,521 2,298
2010 2,862 2,332
2009 3,026 2,358
2008 2,825 2,397
2007 2,617 2,423
2006 2,491 2,459
2005 2,433 2,495
2004 2,425 2,478
2003 2,317 2,448
2002 2,243 2,396
2001 2,365 2,358
2000 2,475 2,346
1999 2,192 2,352
1998 2,357 2,344
1997 2,305 2,332
1996 2,447 2,393
1995 2,354 2,476
1994 2,713 2,547
1993 2,875 2,594
1992 2,898 2,622
1991 2,733 2,637
1990 3,058 2,641
1989 2,832 2,644
1988 2,847 2,649
1987 2,360 2,646
1986 2,384 2,704
1985 2,221 2,762
1984 2,539 2,814
1983 2,702 2,840
1982 2,736 2,853
1981 2,677 2,882
1980 2,966 2,885
1979 2,980 2,884
1978 2,727 2,862
1977 2,551 2,822
1976 2,951 2,769
1975 2,965 2,709
1974 2,776 2,650
1973 3,121 2,617
1972 3,241 2,605
1971 2,782 2,611
1970 2,576 2,628
1969 2,766 2,632
1968 2,841 2,614
1967 3,021 2,603
1966 3,305 2,550
1965 3,442 2,498
1964 3,459 2,445
1963 3,490 2,394
1962 3,465 2,343
1961 3,312 2,284
1960 3,758 2,230

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

GeoRank.org/birth-rate/iceland/tonga | 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 +0.44% in Iceland and +1.67% in Tonga.

For the past 10 years, the annual natural population change has been +0.57% in Iceland and +1.79% in Tonga.

Birth rate in Iceland vs Tonga by year

Iceland
Tonga

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Iceland Tonga
2023 11 23.1
2022 11.5 23.4
2021 13.1 23.5
2020 12.3 23.6
2019 12.3 23.8
2018 12 24.1
2017 11.9 24.5
2016 12 25.2
2015 12.5 25.8
2014 13.4 26.4
2013 13.4 26.9
2012 14.1 27.3
2011 14.1 27.7
2010 15.4 28
2009 15.8 28.4
2008 15.2 28.7
2007 14.6 29
2006 14.5 29.5
2005 14.4 30
2004 14.5 30
2003 14.3 29.9
2002 14.1 29.5
2001 14.4 29.4
2000 15.3 29.4
1999 14.8 29.6
1998 15.2 29.7
1997 15.3 29.8
1996 16.1 30.6
1995 16 31.4
1994 16.7 32.2
1993 17.5 32.7
1992 17.7 33
1991 17.6 33.2
1990 18.7 33.3
1989 18 33.4
1988 18.7 33.5
1987 16.6 33.7
1986 16.4 34.4
1985 16 34.9
1984 17.2 35.4
1983 18.4 35.6
1982 18.5 35.8
1981 18.8 36
1980 19.8 36.1
1979 19.8 36.1
1978 18.6 36
1977 18 35.7
1976 19.5 35.6
1975 20.1 35.8
1974 19.9 36
1973 21.7 36.5
1972 22.4 37
1971 20.8 37.8
1970 19.7 38.8
1969 20.7 39.6
1968 21 40.3
1967 22.2 41
1966 24 41.4
1965 24.6 41.9
1964 25.3 42.4
1963 26 42.9
1962 25.8 43.4
1961 25.5 43.9
1960 28 44.3

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

GeoRank.org/birth-rate/iceland/tonga | CC BY

The latest reported birth rate per 1,000 people in 2023 was 11 in Iceland and 23.1 in Tonga, compared with 28 and 44.3, respectively, in 1960.

Birth rate data compared

Iceland Tonga
Fertility rate 1.59 3.13
Fertility rate rank 127/196 54/196
Birth rate 11 23.1
Birth rate rank 132/196 58/196
Population change due to births and deaths +1,697 +1,744
Natural population change rank 138/196 137/196
Natural population change rate +0.44% +1.67%
Population growth +0.22% -0.4%
Population growth rank 155/197 183/197
Age at first childbirth 28.8 years 24.9 years
Average age at childbearing 31 years 29.9 years
Annual births per 1,000 women ages 15-19 2.72 25
Annual births per 1,000 women ages 20-29 67.1 144.7
Annual births per 1,000 women ages 30+ 20.4 40.5
Female of reproductive age (15-49), share of population 23.7% 25.6%
Any modern method of contraceptive prevalence among married women ages 15-49 n/a 25.2%
Share of births attended by skilled health staff 97.4% 98.3%
Maternal mortality per live birth 0.003% 0.07%
Neonatal mortality rate (before reaching 28 days of age) 0.13% 0.43%
Infant mortality rate (before reaching 1 year of age) 0.19% 0.8%
Mortality rate before reaching 5 years of age 0.26% 0.99%
Life expectancy 83.3 years 73.4 years

Children 0-14 years as share of population

Iceland
Factual

UN forecast
Tonga
Factual

UN forecast
1x
Year Young
Iceland Tonga
2100 11.8% 17.5%
2099 11.8% 17.6%
2098 11.8% 17.7%
2097 11.8% 17.7%
2096 11.9% 17.9%
2095 11.9% 18%
2094 11.9% 18.1%
2093 11.9% 18.3%
2092 11.9% 18.4%
2091 11.9% 18.6%
2090 11.9% 18.8%
2089 11.9% 19%
2088 11.9% 19.3%
2087 11.9% 19.5%
2086 11.9% 19.7%
2085 11.9% 20%
2084 11.9% 20.2%
2083 11.9% 20.4%
2082 11.9% 20.7%
2081 11.9% 20.9%
2080 11.9% 21.1%
2079 12% 21.3%
2078 12% 21.5%
2077 12% 21.7%
2076 12% 21.9%
2075 12.1% 22%
2074 12.1% 22.2%
2073 12.1% 22.3%
2072 12.2% 22.4%
2071 12.2% 22.6%
2070 12.3% 22.7%
2069 12.4% 22.8%
2068 12.4% 23%
2067 12.5% 23.2%
2066 12.6% 23.4%
2065 12.6% 23.6%
2064 12.7% 23.8%
2063 12.8% 24.1%
2062 12.8% 24.4%
2061 12.9% 24.7%
2060 13% 25%
2059 13% 25.4%
2058 13.1% 25.8%
2057 13.2% 26.2%
2056 13.2% 26.6%
2055 13.3% 27%
2054 13.4% 27.4%
2053 13.4% 27.8%
2052 13.5% 28.2%
2051 13.6% 28.5%
2050 13.7% 28.9%
2049 13.8% 29.1%
2048 13.8% 29.4%
2047 14% 29.6%
2046 14.1% 29.7%
2045 14.2% 29.8%
2044 14.3% 29.9%
2043 14.4% 30%
2042 14.6% 30.1%
2041 14.8% 30.1%
2040 14.9% 30.2%
2039 15.1% 30.2%
2038 15.3% 30.3%
2037 15.5% 30.4%
2036 15.8% 30.6%
2035 16% 30.7%
2034 16.2% 30.9%
2033 16.4% 31.1%
2032 16.5% 31.4%
2031 16.6% 31.8%
2030 16.7% 32.3%
2029 16.9% 33%
2028 17% 33.6%
2027 17.2% 34.1%
2026 17.4% 34.6%
2025 17.6% 35.2%
2024 17.8% 35.4%
2023 18.1% 35.6%
2022 18.4% 35.6%
2021 18.6% 35.7%
2020 18.7% 35.8%
2019 18.9% 36%
2018 19.2% 36.2%
2017 19.6% 36.4%
2016 19.9% 36.5%
2015 20.2% 36.7%
2014 20.4% 36.9%
2013 20.6% 37.1%
2012 20.7% 37.2%
2011 20.8% 37.4%
2010 20.9% 37.6%
2009 20.9% 37.8%
2008 20.9% 38%
2007 21.1% 38.3%
2006 21.5% 38.3%
2005 22.1% 38.3%
2004 22.5% 38.2%
2003 22.8% 38.1%
2002 23% 38.1%
2001 23.2% 38.2%
2000 23.3% 38.3%
1999 23.4% 38.6%
1998 23.6% 38.9%
1997 23.9% 39.3%
1996 24.1% 39.7%
1995 24.4% 39.9%
1994 24.7% 40.1%
1993 24.8% 40.3%
1992 24.8% 40.5%
1991 24.8% 40.6%
1990 25% 40.8%
1989 25% 40.9%
1988 25.2% 41.2%
1987 25.6% 41.5%
1986 25.9% 41.7%
1985 26.2% 42%
1984 26.5% 42.4%
1983 26.7% 42.9%
1982 26.9% 43.4%
1981 27.2% 43.9%
1980 27.5% 44.3%
1979 27.9% 44.8%
1978 28.4% 45.3%
1977 29% 45.8%
1976 29.5% 46.1%
1975 30.1% 46.2%
1974 30.7% 46.2%
1973 31.2% 46.2%
1972 31.6% 46.3%
1971 32.1% 46.4%
1970 32.6% 46.4%
1969 33.2% 46.3%
1968 33.6% 46.2%
1967 34% 46%
1966 34.3% 45.9%
1965 34.5% 45.9%
1964 34.7% 45.9%
1963 34.9% 45.9%
1962 34.9% 45.8%
1961 35% 45.7%
1960 34.9% 45.7%

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/iceland/tonga | CC BY

Children aged 0-14 make up 17.8% of the population in Iceland and 35.4% in Tonga in 2024, compared to 25% and 40.8% respectively in 1990.

Demographics of Iceland and Tonga compared.

Fertility rates around the globe

1x

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

GeoRank.org/birth-rate/iceland/tonga | CC BY

Maternal mortality chart: Iceland vs Tonga

Iceland
Tonga
1x
Year Maternal mortality per 100K births
Iceland Tonga
2023 3 67
2022 5 72
2021 5 76
2020 12 74
2019 4 73
2018 4 74
2017 3 77
2016 3 78
2015 4 79
2014 4 80
2013 4 80
2012 4 83
2011 4 84
2010 5 85
2009 5 91
2008 4 88
2007 5 88
2006 5 89
2005 5 92
2004 6 92
2003 6 95
2002 7 98
2001 6 98
2000 7 100
1999 7 99
1998 8 104
1997 8 111
1996 7 113
1995 13 117
1994 9 123
1993 10 127
1992 12 129
1991 11 134
1990 13 138
1989 14 139
1988 11 145
1987 13 147
1986 15 149
1985 11 148

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

GeoRank.org/birth-rate/iceland/tonga | 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 Iceland, compared to 67 deaths in Tonga.

Under-five mortality rates

Iceland
Tonga

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Iceland Tonga
2023 0.26% 0.99%
2022 0.26% 1.02%
2021 0.27% 1.05%
2020 0.27% 1.08%
2019 0.27% 1.1%
2018 0.27% 1.12%
2017 0.26% 1.15%
2016 0.26% 1.17%
2015 0.26% 1.19%
2014 0.26% 1.22%
2013 0.26% 1.24%
2012 0.26% 1.26%
2011 0.27% 1.29%
2010 0.27% 1.31%
2009 0.27% 1.34%
2008 0.28% 1.37%
2007 0.29% 1.41%
2006 0.3% 1.44%
2005 0.31% 1.48%
2004 0.33% 1.52%
2003 0.34% 1.56%
2002 0.36% 1.61%
2001 0.38% 1.65%
2000 0.4% 1.7%
1999 0.42% 1.74%
1998 0.45% 1.78%
1997 0.47% 1.81%
1996 0.49% 1.85%
1995 0.52% 1.89%
1994 0.54% 1.94%
1993 0.56% 2%
1992 0.58% 2.06%
1991 0.61% 2.14%
1990 0.63% 2.21%
1989 0.65% 2.29%
1988 0.67% 2.37%
1987 0.7% 2.44%
1986 0.73% 2.51%
1985 0.75% 2.57%
1984 0.79% 2.63%
1983 0.83% 2.7%
1982 0.87% 2.78%
1981 0.92% 2.87%
1980 0.97% 2.97%
1979 1.03% 3.09%
1978 1.09% 3.22%
1977 1.15% 3.37%
1976 1.22% 3.53%
1975 1.29% 3.71%
1974 1.35% 3.9%
1973 1.41% 4.11%
1972 1.48% 4.35%
1971 1.54% 4.61%
1970 1.6% 4.91%
1969 1.66% 5.25%
1968 1.72% 5.63%
1967 1.79% 6.03%
1966 1.85% 6.45%
1965 1.92% 6.89%
1964 1.97% 7.35%
1963 2.02% 7.83%
1962 2.07% -
1961 2.11% -
1960 2.14% -

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

GeoRank.org/birth-rate/iceland/tonga | CC BY

The chance that a newborn baby will die before reaching age five is 0.26% in Iceland and 0.99% in Tonga. 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. United Nations Economic Commission for Europe (UNECE) (2023, retrieved 2026-03-10)
  4. Central Intelligence Agency (CIA) (2025, retrieved 2026-02-20)

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