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Fertility & birth rates in Solomon Islands and Tonga

Updated on by Georank team

The Solomon Islands has an annual birth rate of 26.9 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 3.56 in the Solomon Islands and 3.13 in Tonga — 12% difference.

1960 vs 2023, the fertility rate has decreased by 49.7% in the Solomon Islands and by 53% in Tonga — in 1960, it was 7.07 and 6.65, respectively.

  • The Solomon Islands is ranked 45/196 by birth rate compared to 58/196 for Tonga.
  • The mean age for first-time mothers is 22.6 years in the Solomon Islands, compared to 24.9 years in Tonga.
  • The mean age at childbearing (for all the births, not just the first) is 29.1 in the Solomon Islands — it's 29.9 in Tonga.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 50.4 in the Solomon Islands vs 24.8 in Tonga.
  • In the Solomon Islands, 24.8% of the population is composed of women of reproductive age (15-49), compared to 25.6% in Tonga.

Fertility rate in Solomon Islands vs Tonga by year

Solomon Islands
Tonga
1x
Year Fertility rate
Solomon Islands Tonga
2023 3.56 3.13
2022 3.62 3.17
2021 3.69 3.2
2020 3.75 3.23
2019 3.8 3.27
2018 3.93 3.33
2017 4.06 3.39
2016 4.2 3.46
2015 4.29 3.54
2014 4.36 3.62
2013 4.33 3.7
2012 4.33 3.77
2011 4.34 3.83
2010 4.34 3.88
2009 4.35 3.95
2008 4.36 4.01
2007 4.37 4.09
2006 4.39 4.14
2005 4.41 4.2
2004 4.47 4.19
2003 4.54 4.18
2002 4.6 4.14
2001 4.67 4.13
2000 4.76 4.16
1999 4.86 4.23
1998 4.98 4.31
1997 5.09 4.38
1996 5.22 4.46
1995 5.34 4.56
1994 5.4 4.66
1993 5.45 4.73
1992 5.51 4.79
1991 5.62 4.85
1990 5.74 4.93
1989 5.87 5.01
1988 5.99 5.1
1987 6.12 5.19
1986 6.26 5.27
1985 6.38 5.34
1984 6.49 5.41
1983 6.57 5.45
1982 6.64 5.5
1981 6.71 5.55
1980 6.77 5.6
1979 6.82 5.65
1978 6.87 5.68
1977 6.92 5.7
1976 6.95 5.73
1975 6.99 5.75
1974 7.01 5.77
1973 7 5.8
1972 6.99 5.86
1971 6.99 5.96
1970 6.98 6.07
1969 6.97 6.17
1968 6.95 6.23
1967 6.97 6.29
1966 7 6.35
1965 7.02 6.41
1964 7.05 6.46
1963 7.03 6.52
1962 7.04 6.57
1961 7.05 6.61
1960 7.07 6.65

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

GeoRank.org/birth-rate/solomon-islands/tonga | CC BY

According to the latest available data on birth rates, the fertility rate in the Solomon Islands was 3.56 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 the Solomon Islands vs Tonga population clock for a dynamic visualization of the changing population.

Natural population change by year

Solomon Islands
Tonga
1x
Year Natural population change
Solomon Islands Tonga
2023 17,436 1,744
2022 17,253 1,772
2021 16,626 1,773
2020 16,488 1,816
2019 16,649 1,841
2018 16,790 1,873
2017 16,897 1,912
2016 17,027 1,989
2015 16,909 2,064
2014 16,652 2,135
2013 16,038 2,199
2012 15,585 2,255
2011 15,095 2,298
2010 14,604 2,332
2009 14,381 2,358
2008 14,225 2,397
2007 13,963 2,423
2006 13,799 2,459
2005 13,568 2,495
2004 13,444 2,478
2003 13,344 2,448
2002 13,195 2,396
2001 13,061 2,358
2000 12,938 2,346
1999 12,809 2,352
1998 12,658 2,344
1997 12,478 2,332
1996 12,328 2,393
1995 12,124 2,476
1994 11,771 2,547
1993 11,396 2,594
1992 11,029 2,622
1991 10,789 2,637
1990 10,561 2,641
1989 10,354 2,644
1988 10,142 2,649
1987 9,943 2,646
1986 9,656 2,704
1985 9,534 2,762
1984 9,299 2,814
1983 9,011 2,840
1982 8,720 2,853
1981 8,436 2,882
1980 8,156 2,885
1979 7,874 2,884
1978 7,598 2,862
1977 7,290 2,822
1976 7,058 2,769
1975 6,635 2,709
1974 6,612 2,650
1973 6,343 2,617
1972 6,074 2,605
1971 5,814 2,611
1970 5,575 2,628
1969 5,444 2,632
1968 5,285 2,614
1967 5,151 2,603
1966 5,028 2,550
1965 4,885 2,498
1964 4,747 2,445
1963 4,571 2,394
1962 4,408 2,343
1961 4,257 2,284
1960 4,119 2,230

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

GeoRank.org/birth-rate/solomon-islands/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 +2.18% in the Solomon Islands and +1.67% in Tonga.

For the past 10 years, the annual natural population change has been +2.38% in the Solomon Islands and +1.79% in Tonga.

Birth rate in Solomon Islands vs Tonga by year

Solomon Islands
Tonga

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Solomon Islands Tonga
2023 26.9 23.1
2022 27.3 23.4
2021 27.7 23.5
2020 28 23.6
2019 28.4 23.8
2018 29.1 24.1
2017 30.1 24.5
2016 31.1 25.2
2015 31.9 25.8
2014 32.6 26.4
2013 32.5 26.9
2012 32.7 27.3
2011 33 27.7
2010 33.2 28
2009 33.7 28.4
2008 33.8 28.7
2007 33.9 29
2006 34 29.5
2005 34 30
2004 34.3 30
2003 34.6 29.9
2002 34.8 29.5
2001 35.1 29.4
2000 35.4 29.4
1999 35.8 29.6
1998 36.3 29.7
1997 36.7 29.8
1996 37.3 30.6
1995 37.7 31.4
1994 37.7 32.2
1993 37.6 32.7
1992 37.5 33
1991 37.9 33.2
1990 38.3 33.3
1989 38.7 33.4
1988 39.2 33.5
1987 39.7 33.7
1986 40.3 34.4
1985 40.6 34.9
1984 41 35.4
1983 41.2 35.6
1982 41.4 35.8
1981 41.7 36
1980 41.9 36.1
1979 42.2 36.1
1978 42.6 36
1977 42.9 35.7
1976 43.3 35.6
1975 43.8 35.8
1974 44.1 36
1973 44.1 36.5
1972 44.1 37
1971 44.2 37.8
1970 44.2 38.8
1969 44.6 39.6
1968 44.9 40.3
1967 45.4 41
1966 45.8 41.4
1965 46.1 41.9
1964 46.5 42.4
1963 46.5 42.9
1962 46.5 43.4
1961 46.7 43.9
1960 46.8 44.3

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

GeoRank.org/birth-rate/solomon-islands/tonga | CC BY

The latest reported birth rate per 1,000 people in 2023 was 26.9 in the Solomon Islands and 23.1 in Tonga, compared with 46.8 and 44.3, respectively, in 1960.

Birth rate data compared

Solomon Islands Tonga
Fertility rate 3.56 3.13
Fertility rate rank 44/196 54/196
Birth rate 26.9 23.1
Birth rate rank 45/196 58/196
Population change due to births and deaths +17,436 +1,744
Natural population change rank 112/196 137/196
Natural population change rate +2.18% +1.67%
Population growth +2.4% -0.4%
Population growth rank 33/197 183/197
Age at first childbirth 22.6 years 24.9 years
Average age at childbearing 29.1 years 29.9 years
Annual births per 1,000 women ages 15-19 48.1 25
Annual births per 1,000 women ages 20-29 173 144.7
Annual births per 1,000 women ages 30+ 51.9 40.5
Female of reproductive age (15-49), share of population 24.8% 25.6%
Any modern method of contraceptive prevalence among married women ages 15-49 24.3% 25.2%
Share of births attended by skilled health staff 86.2% 98.3%
Maternal mortality per live birth 0.12% 0.07%
Neonatal mortality rate (before reaching 28 days of age) 0.83% 0.43%
Infant mortality rate (before reaching 1 year of age) 1.65% 0.8%
Mortality rate before reaching 5 years of age 2.06% 0.99%
Life expectancy 71 years 73.4 years

Children 0-14 years as share of population

Solomon Islands
Factual

UN forecast
Tonga
Factual

UN forecast
1x
Year Young
Solomon Islands Tonga
2100 19% 17.5%
2099 19.1% 17.6%
2098 19.2% 17.7%
2097 19.4% 17.7%
2096 19.5% 17.9%
2095 19.6% 18%
2094 19.8% 18.1%
2093 19.9% 18.3%
2092 20% 18.4%
2091 20.2% 18.6%
2090 20.3% 18.8%
2089 20.5% 19%
2088 20.6% 19.3%
2087 20.8% 19.5%
2086 21% 19.7%
2085 21.2% 20%
2084 21.3% 20.2%
2083 21.5% 20.4%
2082 21.7% 20.7%
2081 21.9% 20.9%
2080 22.1% 21.1%
2079 22.3% 21.3%
2078 22.4% 21.5%
2077 22.6% 21.7%
2076 22.8% 21.9%
2075 23% 22%
2074 23.2% 22.2%
2073 23.4% 22.3%
2072 23.6% 22.4%
2071 23.8% 22.6%
2070 24% 22.7%
2069 24.2% 22.8%
2068 24.4% 23%
2067 24.6% 23.2%
2066 24.8% 23.4%
2065 25% 23.6%
2064 25.2% 23.8%
2063 25.4% 24.1%
2062 25.6% 24.4%
2061 25.9% 24.7%
2060 26.1% 25%
2059 26.3% 25.4%
2058 26.6% 25.8%
2057 26.8% 26.2%
2056 27.1% 26.6%
2055 27.4% 27%
2054 27.7% 27.4%
2053 28% 27.8%
2052 28.3% 28.2%
2051 28.6% 28.5%
2050 28.9% 28.9%
2049 29.2% 29.1%
2048 29.4% 29.4%
2047 29.7% 29.6%
2046 30% 29.7%
2045 30.3% 29.8%
2044 30.6% 29.9%
2043 30.8% 30%
2042 31.1% 30.1%
2041 31.3% 30.1%
2040 31.6% 30.2%
2039 31.8% 30.2%
2038 32.1% 30.3%
2037 32.3% 30.4%
2036 32.5% 30.6%
2035 32.8% 30.7%
2034 33% 30.9%
2033 33.4% 31.1%
2032 33.7% 31.4%
2031 34.1% 31.8%
2030 34.5% 32.3%
2029 35% 33%
2028 35.4% 33.6%
2027 35.9% 34.1%
2026 36.3% 34.6%
2025 36.8% 35.2%
2024 37% 35.4%
2023 37.4% 35.6%
2022 37.7% 35.6%
2021 38.1% 35.7%
2020 38.4% 35.8%
2019 38.7% 36%
2018 39% 36.2%
2017 39.4% 36.4%
2016 39.7% 36.5%
2015 40% 36.7%
2014 40.2% 36.9%
2013 40.4% 37.1%
2012 40.7% 37.2%
2011 40.8% 37.4%
2010 41% 37.6%
2009 41.1% 37.8%
2008 41.2% 38%
2007 41.2% 38.3%
2006 41.3% 38.3%
2005 41.5% 38.3%
2004 41.7% 38.2%
2003 41.9% 38.1%
2002 42.2% 38.1%
2001 42.5% 38.2%
2000 42.9% 38.3%
1999 43.2% 38.6%
1998 43.5% 38.9%
1997 43.8% 39.3%
1996 44% 39.7%
1995 44.3% 39.9%
1994 44.5% 40.1%
1993 44.8% 40.3%
1992 45.1% 40.5%
1991 45.4% 40.6%
1990 45.8% 40.8%
1989 46.2% 40.9%
1988 46.6% 41.2%
1987 46.9% 41.5%
1986 47.3% 41.7%
1985 47.5% 42%
1984 47.8% 42.4%
1983 47.9% 42.9%
1982 48.1% 43.4%
1981 48.2% 43.9%
1980 48.3% 44.3%
1979 48.3% 44.8%
1978 48.3% 45.3%
1977 48.3% 45.8%
1976 48.2% 46.1%
1975 47.9% 46.2%
1974 47.5% 46.2%
1973 47.1% 46.2%
1972 46.9% 46.3%
1971 46.8% 46.4%
1970 46.7% 46.4%
1969 46.6% 46.3%
1968 46.4% 46.2%
1967 46.2% 46%
1966 46% 45.9%
1965 45.9% 45.9%
1964 45.8% 45.9%
1963 45.9% 45.9%
1962 46% 45.8%
1961 46.1% 45.7%
1960 46.3% 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/solomon-islands/tonga | CC BY

Children aged 0-14 make up 37% of the population in the Solomon Islands and 35.4% in Tonga in 2024, compared to 45.8% and 40.8% respectively in 1990.

Demographics of the Solomon Islands and Tonga compared.

Fertility rates around the globe

1x

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

GeoRank.org/birth-rate/solomon-islands/tonga | CC BY

Maternal mortality chart: Solomon Islands vs Tonga

Solomon Islands
Tonga
1x
Year Maternal mortality per 100K births
Solomon Islands Tonga
2023 123 67
2022 126 72
2021 153 76
2020 131 74
2019 135 73
2018 136 74
2017 140 77
2016 143 78
2015 146 79
2014 147 80
2013 147 80
2012 146 83
2011 147 84
2010 148 85
2009 152 91
2008 153 88
2007 163 88
2006 159 89
2005 161 92
2004 164 92
2003 167 95
2002 168 98
2001 167 98
2000 166 100
1999 164 99
1998 165 104
1997 164 111
1996 166 113
1995 168 117
1994 170 123
1993 173 127
1992 174 129
1991 178 134
1990 184 138
1989 188 139
1988 193 145
1987 200 147
1986 226 149
1985 209 148

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

GeoRank.org/birth-rate/solomon-islands/tonga | CC BY

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 123 deaths per 100,000 live births in the Solomon Islands, compared to 67 deaths in Tonga.

Under-five mortality rates

Solomon Islands
Tonga

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Solomon Islands Tonga
2023 2.06% 0.99%
2022 2.12% 1.02%
2021 2.18% 1.05%
2020 2.24% 1.08%
2019 2.3% 1.1%
2018 2.36% 1.12%
2017 2.41% 1.15%
2016 2.45% 1.17%
2015 2.49% 1.19%
2014 2.53% 1.22%
2013 2.58% 1.24%
2012 2.62% 1.26%
2011 2.67% 1.29%
2010 2.72% 1.31%
2009 2.76% 1.34%
2008 2.81% 1.37%
2007 2.85% 1.41%
2006 2.88% 1.44%
2005 2.91% 1.48%
2004 2.94% 1.52%
2003 2.97% 1.56%
2002 2.99% 1.61%
2001 3.03% 1.65%
2000 3.07% 1.7%
1999 3.11% 1.74%
1998 3.16% 1.78%
1997 3.21% 1.81%
1996 3.27% 1.85%
1995 3.35% 1.89%
1994 3.43% 1.94%
1993 3.52% 2%
1992 3.62% 2.06%
1991 3.72% 2.14%
1990 3.82% 2.21%
1989 3.93% 2.29%
1988 4.04% 2.37%
1987 4.16% 2.44%
1986 4.28% 2.51%
1985 4.42% 2.57%
1984 4.58% 2.63%
1983 4.74% 2.7%
1982 4.93% 2.78%
1981 5.14% 2.87%
1980 5.38% 2.97%
1979 5.64% 3.09%
1978 5.95% 3.22%
1977 6.29% 3.37%
1976 6.68% 3.53%
1975 7.9% 3.71%
1974 7.6% 3.9%
1973 8.12% 4.11%
1972 8.69% 4.35%
1971 9.29% 4.61%
1970 9.94% 4.91%
1969 10.6% 5.25%
1968 11.3% 5.63%
1967 12% 6.03%
1966 12.7% 6.45%
1965 13.3% 6.89%
1964 14% 7.35%
1963 14.7% 7.83%
1962 15.4% -
1961 16% -
1960 16.7% -

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

GeoRank.org/birth-rate/solomon-islands/tonga | CC BY

The chance that a newborn baby will die before reaching age five is 2.06% in the Solomon Islands 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. Central Intelligence Agency (CIA) (2025, retrieved 2026-02-20)

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