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Fertility & birth rates in Saint Lucia and Tonga

Updated on by Georank team

Saint Lucia has an annual birth rate of 11.3 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 1.38 in Saint Lucia and 3.13 in Tonga — 126.9% difference.

1960 vs 2023, the fertility rate has decreased by 79.6% in Saint Lucia and by 53% in Tonga — in 1960, it was 6.77 and 6.65, respectively.

  • Saint Lucia is ranked 123/196 by birth rate compared to 58/196 for Tonga.
  • The mean age at childbearing (for all the births, not just the first) is 28.9 in Saint Lucia — it's 29.9 in Tonga.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 27.8 in Saint Lucia vs 24.8 in Tonga.
  • In Saint Lucia, 27.1% of the population is composed of women of reproductive age (15-49), compared to 25.6% in Tonga.

Fertility rate in Saint Lucia vs Tonga by year

Saint Lucia
Tonga
1x
Year Fertility rate
Saint Lucia Tonga
2023 1.38 3.13
2022 1.39 3.17
2021 1.4 3.2
2020 1.41 3.23
2019 1.42 3.27
2018 1.44 3.33
2017 1.45 3.39
2016 1.46 3.46
2015 1.47 3.54
2014 1.49 3.62
2013 1.5 3.7
2012 1.5 3.77
2011 1.5 3.83
2010 1.67 3.88
2009 1.74 3.95
2008 1.7 4.01
2007 1.7 4.09
2006 1.77 4.14
2005 1.81 4.2
2004 1.86 4.19
2003 1.94 4.18
2002 2.03 4.14
2001 2.13 4.13
2000 2.21 4.16
1999 2.5 4.23
1998 2.4 4.31
1997 2.74 4.38
1996 2.71 4.46
1995 3.03 4.56
1994 3.03 4.66
1993 3 4.73
1992 3.11 4.79
1991 3.19 4.85
1990 3.24 4.93
1989 3.31 5.01
1988 3.44 5.1
1987 3.61 5.19
1986 3.8 5.27
1985 3.97 5.34
1984 4.02 5.41
1983 4.08 5.45
1982 4.17 5.5
1981 4.28 5.55
1980 4.41 5.6
1979 4.58 5.65
1978 4.83 5.68
1977 4.97 5.7
1976 5.16 5.73
1975 5.36 5.75
1974 5.57 5.77
1973 5.69 5.8
1972 5.81 5.86
1971 5.95 5.96
1970 6.1 6.07
1969 6.25 6.17
1968 6.39 6.23
1967 6.51 6.29
1966 6.61 6.35
1965 6.69 6.41
1964 6.76 6.46
1963 6.72 6.52
1962 6.82 6.57
1961 6.84 6.61
1960 6.77 6.65

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

GeoRank.org/birth-rate/saint-lucia/tonga | CC BY

According to the latest available data on birth rates, the fertility rate in Saint Lucia was 1.38 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 Saint Lucia vs Tonga population clock for a dynamic visualization of the changing population.

Natural population change by year

Saint Lucia
Tonga
1x
Year Natural population change
Saint Lucia Tonga
2023 475 1,744
2022 530 1,772
2021 -15 1,773
2020 562 1,816
2019 609 1,841
2018 694 1,873
2017 724 1,912
2016 767 1,989
2015 841 2,064
2014 852 2,135
2013 892 2,199
2012 916 2,255
2011 934 2,298
2010 1,176 2,332
2009 1,349 2,358
2008 1,369 2,397
2007 1,422 2,423
2006 1,511 2,459
2005 1,553 2,495
2004 1,615 2,478
2003 1,694 2,448
2002 1,774 2,396
2001 1,860 2,358
2000 1,967 2,346
1999 2,389 2,352
1998 2,294 2,344
1997 2,709 2,332
1996 2,649 2,393
1995 3,019 2,476
1994 2,976 2,547
1993 2,899 2,594
1992 2,981 2,622
1991 3,009 2,637
1990 3,061 2,641
1989 3,146 2,644
1988 3,229 2,649
1987 3,351 2,646
1986 3,496 2,704
1985 3,591 2,762
1984 3,526 2,814
1983 3,443 2,840
1982 3,360 2,853
1981 3,306 2,882
1980 3,275 2,885
1979 3,301 2,884
1978 3,340 2,862
1977 3,240 2,822
1976 3,166 2,769
1975 3,126 2,709
1974 3,106 2,650
1973 3,033 2,617
1972 3,028 2,605
1971 3,046 2,611
1970 3,093 2,628
1969 3,143 2,632
1968 3,154 2,614
1967 3,113 2,603
1966 3,028 2,550
1965 3,042 2,498
1964 3,074 2,445
1963 3,048 2,394
1962 3,124 2,343
1961 3,173 2,284
1960 3,202 2,230

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

GeoRank.org/birth-rate/saint-lucia/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 +0.26% in Saint Lucia and +1.67% in Tonga.

For the past 10 years, the annual natural population change has been +0.34% in Saint Lucia and +1.79% in Tonga.

Birth rate in Saint Lucia vs Tonga by year

Saint Lucia
Tonga

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Saint Lucia Tonga
2023 11.3 23.1
2022 11.4 23.4
2021 11.6 23.5
2020 11.7 23.6
2019 11.9 23.8
2018 12 24.1
2017 12.1 24.5
2016 12.2 25.2
2015 12.3 25.8
2014 12.4 26.4
2013 12.5 26.9
2012 12.4 27.3
2011 12.4 27.7
2010 13.8 28
2009 14.6 28.4
2008 14.6 28.7
2007 14.8 29
2006 15.3 29.5
2005 15.6 30
2004 16 30
2003 16.6 29.9
2002 17.3 29.5
2001 18 29.4
2000 18.8 29.4
1999 21.5 29.6
1998 20.9 29.7
1997 23.7 29.8
1996 23.5 30.6
1995 26.2 31.4
1994 26.2 32.2
1993 26 32.7
1992 27 33
1991 27.6 33.2
1990 28.3 33.3
1989 29 33.4
1988 29.8 33.5
1987 31.1 33.7
1986 32.4 34.4
1985 33.6 34.9
1984 33.4 35.4
1983 33.4 35.6
1982 33.5 35.8
1981 33.6 36
1980 34.2 36.1
1979 34.9 36.1
1978 35.6 36
1977 35.3 35.7
1976 35.4 35.6
1975 35.6 35.8
1974 36.1 36
1973 36.3 36.5
1972 36.7 37
1971 37.4 37.8
1970 38.5 38.8
1969 39.5 39.6
1968 40.2 40.3
1967 40.4 41
1966 40.1 41.4
1965 41 41.9
1964 42 42.4
1963 42.6 42.9
1962 44.3 43.4
1961 45.7 43.9
1960 47.1 44.3

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

GeoRank.org/birth-rate/saint-lucia/tonga | CC BY

The latest reported birth rate per 1,000 people in 2023 was 11.3 in Saint Lucia and 23.1 in Tonga, compared with 47.1 and 44.3, respectively, in 1960.

Birth rate data compared

Saint Lucia Tonga
Fertility rate 1.38 3.13
Fertility rate rank 166/196 54/196
Birth rate 11.3 23.1
Birth rate rank 123/196 58/196
Population change due to births and deaths +475 +1,744
Natural population change rank 145/196 137/196
Natural population change rate +0.26% +1.67%
Population growth +0.26% -0.4%
Population growth rank 153/197 183/197
Age at first childbirth n/a 24.9 years
Average age at childbearing 28.9 years 29.9 years
Annual births per 1,000 women ages 15-19 25.4 25
Annual births per 1,000 women ages 20-29 63.7 144.7
Annual births per 1,000 women ages 30+ 16.3 40.5
Female of reproductive age (15-49), share of population 27.1% 25.6%
Any modern method of contraceptive prevalence among married women ages 15-49 52.4% 25.2%
Share of births attended by skilled health staff 100% 98.3%
Maternal mortality per live birth 0.04% 0.07%
Neonatal mortality rate (before reaching 28 days of age) 1% 0.43%
Infant mortality rate (before reaching 1 year of age) 1.43% 0.8%
Mortality rate before reaching 5 years of age 1.55% 0.99%
Life expectancy 73.2 years 73.4 years

Children 0-14 years as share of population

Saint Lucia
Factual

UN forecast
Tonga
Factual

UN forecast
1x
Year Young
Saint Lucia Tonga
2100 12% 17.5%
2099 12% 17.6%
2098 12% 17.7%
2097 12% 17.7%
2096 12% 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 11.8% 18.8%
2089 11.8% 19%
2088 11.8% 19.3%
2087 11.8% 19.5%
2086 11.8% 19.7%
2085 11.8% 20%
2084 11.8% 20.2%
2083 11.8% 20.4%
2082 11.8% 20.7%
2081 11.8% 20.9%
2080 11.8% 21.1%
2079 11.8% 21.3%
2078 11.8% 21.5%
2077 11.9% 21.7%
2076 11.9% 21.9%
2075 11.9% 22%
2074 12% 22.2%
2073 12% 22.3%
2072 12.1% 22.4%
2071 12.1% 22.6%
2070 12.1% 22.7%
2069 12.2% 22.8%
2068 12.2% 23%
2067 12.2% 23.2%
2066 12.3% 23.4%
2065 12.3% 23.6%
2064 12.3% 23.8%
2063 12.4% 24.1%
2062 12.4% 24.4%
2061 12.4% 24.7%
2060 12.4% 25%
2059 12.5% 25.4%
2058 12.5% 25.8%
2057 12.5% 26.2%
2056 12.6% 26.6%
2055 12.6% 27%
2054 12.7% 27.4%
2053 12.8% 27.8%
2052 12.9% 28.2%
2051 13% 28.5%
2050 13.1% 28.9%
2049 13.2% 29.1%
2048 13.3% 29.4%
2047 13.5% 29.6%
2046 13.6% 29.7%
2045 13.8% 29.8%
2044 14% 29.9%
2043 14.1% 30%
2042 14.3% 30.1%
2041 14.5% 30.1%
2040 14.7% 30.2%
2039 14.9% 30.2%
2038 15.1% 30.3%
2037 15.3% 30.4%
2036 15.5% 30.6%
2035 15.7% 30.7%
2034 15.8% 30.9%
2033 16% 31.1%
2032 16.2% 31.4%
2031 16.4% 31.8%
2030 16.5% 32.3%
2029 16.7% 33%
2028 16.9% 33.6%
2027 17% 34.1%
2026 17.1% 34.6%
2025 17.4% 35.2%
2024 17.5% 35.4%
2023 17.9% 35.6%
2022 18.2% 35.6%
2021 18.5% 35.7%
2020 18.7% 35.8%
2019 19.1% 36%
2018 19.5% 36.2%
2017 19.9% 36.4%
2016 20.3% 36.5%
2015 20.9% 36.7%
2014 21.5% 36.9%
2013 22.1% 37.1%
2012 22.7% 37.2%
2011 23.5% 37.4%
2010 24.3% 37.6%
2009 25.1% 37.8%
2008 25.9% 38%
2007 26.8% 38.3%
2006 27.6% 38.3%
2005 28.4% 38.3%
2004 29.2% 38.2%
2003 30% 38.1%
2002 30.7% 38.1%
2001 31.4% 38.2%
2000 32.4% 38.3%
1999 33.5% 38.6%
1998 34.7% 38.9%
1997 35.7% 39.3%
1996 36.2% 39.7%
1995 36.7% 39.9%
1994 37% 40.1%
1993 37.3% 40.3%
1992 37.7% 40.5%
1991 38.1% 40.6%
1990 38.9% 40.8%
1989 40.2% 40.9%
1988 41.7% 41.2%
1987 42.6% 41.5%
1986 42.8% 41.7%
1985 43.1% 42%
1984 43.3% 42.4%
1983 43.5% 42.9%
1982 43.9% 43.4%
1981 44.3% 43.9%
1980 44.8% 44.3%
1979 45.5% 44.8%
1978 46.6% 45.3%
1977 47.9% 45.8%
1976 48.9% 46.1%
1975 49.5% 46.2%
1974 49.9% 46.2%
1973 50.2% 46.2%
1972 50.4% 46.3%
1971 50.4% 46.4%
1970 50.2% 46.4%
1969 50% 46.3%
1968 49.8% 46.2%
1967 50% 46%
1966 50.4% 45.9%
1965 50.5% 45.9%
1964 50.1% 45.9%
1963 49.6% 45.9%
1962 48.9% 45.8%
1961 48.1% 45.7%
1960 47.1% 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/saint-lucia/tonga | CC BY

Children aged 0-14 make up 17.5% of the population in Saint Lucia and 35.4% in Tonga in 2024, compared to 38.9% and 40.8% respectively in 1990.

Demographics of Saint Lucia and Tonga compared.

Fertility rates around the globe

1x

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

GeoRank.org/birth-rate/saint-lucia/tonga | CC BY

Maternal mortality chart: Saint Lucia vs Tonga

Saint Lucia
Tonga
1x
Year Maternal mortality per 100K births
Saint Lucia Tonga
2023 44 67
2022 48 72
2021 94 76
2020 43 74
2019 43 73
2018 41 74
2017 43 77
2016 46 78
2015 46 79
2014 49 80
2013 53 80
2012 55 83
2011 56 84
2010 56 85
2009 51 91
2008 55 88
2007 55 88
2006 53 89
2005 55 92
2004 54 92
2003 56 95
2002 62 98
2001 70 98
2000 83 100
1999 88 99
1998 89 104
1997 89 111
1996 72 113
1995 60 117
1994 60 123
1993 58 127
1992 58 129
1991 71 134
1990 72 138
1989 66 139
1988 71 145
1987 69 147
1986 57 149
1985 56 148

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

GeoRank.org/birth-rate/saint-lucia/tonga | CC BY

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 44 deaths per 100,000 live births in Saint Lucia, compared to 67 deaths in Tonga.

Under-five mortality rates

Saint Lucia
Tonga

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Saint Lucia Tonga
2023 1.55% 0.99%
2022 1.58% 1.02%
2021 1.6% 1.05%
2020 1.63% 1.08%
2019 1.65% 1.1%
2018 1.67% 1.12%
2017 1.7% 1.15%
2016 1.72% 1.17%
2015 1.74% 1.19%
2014 1.75% 1.22%
2013 1.77% 1.24%
2012 1.78% 1.26%
2011 1.79% 1.29%
2010 1.8% 1.31%
2009 1.81% 1.34%
2008 1.82% 1.37%
2007 1.82% 1.41%
2006 1.82% 1.44%
2005 1.83% 1.48%
2004 1.83% 1.52%
2003 1.83% 1.56%
2002 1.83% 1.61%
2001 1.84% 1.65%
2000 1.85% 1.7%
1999 1.86% 1.74%
1998 1.87% 1.78%
1997 1.88% 1.81%
1996 1.9% 1.85%
1995 1.92% 1.89%
1994 1.95% 1.94%
1993 1.98% 2%
1992 2.01% 2.06%
1991 2.05% 2.14%
1990 2.09% 2.21%
1989 2.14% 2.29%
1988 2.2% 2.37%
1987 2.27% 2.44%
1986 2.35% 2.51%
1985 2.44% 2.57%
1984 2.55% 2.63%
1983 2.68% 2.7%
1982 2.83% 2.78%
1981 3% 2.87%
1980 3.2% 2.97%
1979 3.42% 3.09%
1978 3.68% 3.22%
1977 3.97% 3.37%
1976 4.3% 3.53%
1975 4.67% 3.71%
1974 5.08% 3.9%
1973 5.53% 4.11%
1972 6.02% 4.35%
1971 6.54% 4.61%
1970 7.1% 4.91%
1969 7.7% 5.25%
1968 8.32% 5.63%
1967 8.96% 6.03%
1966 9.62% 6.45%
1965 10.3% 6.89%
1964 11% 7.35%
1963 11.6% 7.83%
1962 12.3% -
1961 12.9% -
1960 13.4% -

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

GeoRank.org/birth-rate/saint-lucia/tonga | CC BY

The chance that a newborn baby will die before reaching age five is 1.55% in Saint Lucia 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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