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Fertility & birth rates in Tonga and Zimbabwe

Updated on by Georank team

Tonga has an annual birth rate of 23.1 births per 1,000 people, compared to 30.4 for Zimbabwe. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 3.13 in Tonga and 3.72 in Zimbabwe — 19% difference.

1960 vs 2023, the fertility rate has decreased by 53% in Tonga and by 48.2% in Zimbabwe — in 1960, it was 6.65 and 7.2, respectively.

  • Tonga is ranked 58/196 by birth rate compared to 31/196 for Zimbabwe.
  • The mean age for first-time mothers is 24.9 years in Tonga, compared to 20.3 years in Zimbabwe.
  • The mean age at childbearing (for all the births, not just the first) is 29.9 in Tonga — it's 28.1 in Zimbabwe.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 24.8 in Tonga vs 98.1 in Zimbabwe.
  • In Tonga, 25.6% of the population is composed of women of reproductive age (15-49), compared to 26.5% in Zimbabwe.

Fertility rate in Tonga vs Zimbabwe by year

Tonga
Zimbabwe
1x
Year Fertility rate
Tonga Zimbabwe
2023 3.13 3.72
2022 3.17 3.77
2021 3.2 3.77
2020 3.23 3.75
2019 3.27 3.75
2018 3.33 3.74
2017 3.39 3.77
2016 3.46 3.83
2015 3.54 3.91
2014 3.62 4.01
2013 3.7 4.11
2012 3.77 4.13
2011 3.83 4.13
2010 3.88 4.04
2009 3.95 3.95
2008 4.01 3.78
2007 4.09 3.68
2006 4.14 3.64
2005 4.2 3.69
2004 4.19 3.78
2003 4.18 3.86
2002 4.14 3.93
2001 4.13 3.98
2000 4.16 4.01
1999 4.23 4.06
1998 4.31 4.07
1997 4.38 4.08
1996 4.46 4.11
1995 4.56 4.15
1994 4.66 4.28
1993 4.73 4.39
1992 4.79 4.57
1991 4.85 4.72
1990 4.93 4.88
1989 5.01 5.07
1988 5.1 5.28
1987 5.19 5.5
1986 5.27 5.69
1985 5.34 5.87
1984 5.41 6.04
1983 5.45 6.2
1982 5.5 6.33
1981 5.55 6.45
1980 5.6 6.52
1979 5.65 6.59
1978 5.68 6.66
1977 5.7 6.71
1976 5.73 6.77
1975 5.75 6.83
1974 5.77 6.88
1973 5.8 6.94
1972 5.86 6.94
1971 5.96 6.94
1970 6.07 6.98
1969 6.17 7.04
1968 6.23 7.11
1967 6.29 7.16
1966 6.35 7.2
1965 6.41 7.23
1964 6.46 7.23
1963 6.52 7.23
1962 6.57 7.23
1961 6.61 7.21
1960 6.65 7.2

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

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

According to the latest available data on birth rates, the fertility rate in Tonga was 3.13 children per woman in 2023, compared to 3.72 in Zimbabwe in 2023. The replacement level is considered to be 2.1 children per woman.

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

Natural population change by year

Tonga
Zimbabwe
1x
Year Natural population change
Tonga Zimbabwe
2023 1,744 372,505
2022 1,772 371,243
2021 1,773 349,908
2020 1,816 354,790
2019 1,841 348,798
2018 1,873 345,883
2017 1,912 344,035
2016 1,989 348,772
2015 2,064 356,203
2014 2,135 366,350
2013 2,199 374,757
2012 2,255 371,135
2011 2,298 359,572
2010 2,332 335,570
2009 2,358 309,316
2008 2,397 280,527
2007 2,423 261,805
2006 2,459 248,963
2005 2,495 248,545
2004 2,478 248,307
2003 2,448 243,057
2002 2,396 244,170
2001 2,358 227,909
2000 2,346 236,343
1999 2,352 232,393
1998 2,344 225,614
1997 2,332 216,288
1996 2,393 205,269
1995 2,476 206,695
1994 2,547 216,343
1993 2,594 228,045
1992 2,622 255,291
1991 2,637 260,943
1990 2,641 265,444
1989 2,644 270,838
1988 2,649 277,498
1987 2,646 286,766
1986 2,704 289,894
1985 2,762 290,756
1984 2,814 290,052
1983 2,840 286,545
1982 2,853 279,934
1981 2,882 271,361
1980 2,885 241,179
1979 2,884 223,657
1978 2,862 222,979
1977 2,822 225,139
1976 2,769 221,419
1975 2,709 216,947
1974 2,650 208,806
1973 2,617 201,885
1972 2,605 193,725
1971 2,611 185,427
1970 2,628 178,979
1969 2,632 172,626
1968 2,614 166,865
1967 2,603 161,205
1966 2,550 156,014
1965 2,498 151,164
1964 2,445 145,848
1963 2,394 140,984
1962 2,343 136,317
1961 2,284 131,531
1960 2,230 126,959

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

GeoRank.org/birth-rate/tonga/zimbabwe | 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 +1.67% in Tonga and +2.28% in Zimbabwe.

For the past 10 years, the annual natural population change has been +1.79% in Tonga and +2.34% in Zimbabwe.

Birth rate in Tonga vs Zimbabwe by year

Tonga
Zimbabwe

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Tonga Zimbabwe
2023 23.1 30.4
2022 23.4 30.9
2021 23.5 30.9
2020 23.6 31
2019 23.8 31.1
2018 24.1 31.3
2017 24.5 31.8
2016 25.2 32.7
2015 25.8 33.9
2014 26.4 35.4
2013 26.9 37
2012 27.3 37.8
2011 27.7 38.1
2010 28 37.9
2009 28.4 37.5
2008 28.7 36.4
2007 29 35.7
2006 29.5 35.2
2005 30 35.8
2004 30 36.3
2003 29.9 36.6
2002 29.5 36.5
2001 29.4 36.5
2000 29.4 36.1
1999 29.6 35.6
1998 29.7 34.5
1997 29.8 33.4
1996 30.6 32.4
1995 31.4 31.7
1994 32.2 32
1993 32.7 32.4
1992 33 34.3
1991 33.2 34.9
1990 33.3 35.5
1989 33.4 36.4
1988 33.5 37.7
1987 33.7 39.5
1986 34.4 40.9
1985 34.9 42.3
1984 35.4 43.7
1983 35.6 45
1982 35.8 45.7
1981 36 46.3
1980 36.1 44.8
1979 36.1 46.3
1978 36 46.8
1977 35.7 46.5
1976 35.6 46.5
1975 35.8 46.6
1974 36 46.4
1973 36.5 46.4
1972 37 46
1971 37.8 45.6
1970 38.8 45.5
1969 39.6 45.5
1968 40.3 45.7
1967 41 45.8
1966 41.4 46.1
1965 41.9 46.4
1964 42.4 46.6
1963 42.9 46.8
1962 43.4 47.1
1961 43.9 47.3
1960 44.3 47.5

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

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

The latest reported birth rate per 1,000 people in 2023 was 23.1 in Tonga and 30.4 in Zimbabwe, compared with 44.3 and 47.5, respectively, in 1960.

Birth rate data compared

Tonga Zimbabwe
Fertility rate 3.13 3.72
Fertility rate rank 54/196 36/196
Birth rate 23.1 30.4
Birth rate rank 58/196 31/196
Population change due to births and deaths +1,744 +372,505
Natural population change rank 137/196 45/196
Natural population change rate +1.67% +2.28%
Population growth -0.4% +1.8%
Population growth rank 183/197 60/197
Age at first childbirth 24.9 years 20.3 years
Average age at childbearing 29.9 years 28.1 years
Annual births per 1,000 women ages 15-19 25 93.2
Annual births per 1,000 women ages 20-29 144.7 176.7
Annual births per 1,000 women ages 30+ 40.5 47.2
Female of reproductive age (15-49), share of population 25.6% 26.5%
Any modern method of contraceptive prevalence among married women ages 15-49 25.2% 65.8%
Share of births attended by skilled health staff 98.3% 86%
Maternal mortality per live birth 0.07% 0.36%
Neonatal mortality rate (before reaching 28 days of age) 0.43% 2.24%
Infant mortality rate (before reaching 1 year of age) 0.8% 4.06%
Mortality rate before reaching 5 years of age 0.99% 4.42%
Life expectancy 73.4 years 63.6 years

Children 0-14 years as share of population

Tonga
Factual

UN forecast
Zimbabwe
Factual

UN forecast
1x
Year Young
Tonga Zimbabwe
2100 17.5% 20.3%
2099 17.6% 20.5%
2098 17.7% 20.6%
2097 17.7% 20.8%
2096 17.9% 20.9%
2095 18% 21.1%
2094 18.1% 21.3%
2093 18.3% 21.4%
2092 18.4% 21.6%
2091 18.6% 21.8%
2090 18.8% 22%
2089 19% 22.2%
2088 19.3% 22.4%
2087 19.5% 22.6%
2086 19.7% 22.8%
2085 20% 23%
2084 20.2% 23.2%
2083 20.4% 23.4%
2082 20.7% 23.6%
2081 20.9% 23.8%
2080 21.1% 24%
2079 21.3% 24.2%
2078 21.5% 24.4%
2077 21.7% 24.6%
2076 21.9% 24.9%
2075 22% 25.1%
2074 22.2% 25.3%
2073 22.3% 25.5%
2072 22.4% 25.7%
2071 22.6% 25.9%
2070 22.7% 26.2%
2069 22.8% 26.4%
2068 23% 26.6%
2067 23.2% 26.8%
2066 23.4% 27.1%
2065 23.6% 27.3%
2064 23.8% 27.6%
2063 24.1% 27.8%
2062 24.4% 28.1%
2061 24.7% 28.4%
2060 25% 28.7%
2059 25.4% 29%
2058 25.8% 29.3%
2057 26.2% 29.6%
2056 26.6% 30%
2055 27% 30.3%
2054 27.4% 30.6%
2053 27.8% 31%
2052 28.2% 31.3%
2051 28.5% 31.7%
2050 28.9% 32%
2049 29.1% 32.4%
2048 29.4% 32.7%
2047 29.6% 33.1%
2046 29.7% 33.4%
2045 29.8% 33.7%
2044 29.9% 34%
2043 30% 34.2%
2042 30.1% 34.5%
2041 30.1% 34.7%
2040 30.2% 34.9%
2039 30.2% 35.2%
2038 30.3% 35.4%
2037 30.4% 35.7%
2036 30.6% 35.9%
2035 30.7% 36.2%
2034 30.9% 36.4%
2033 31.1% 36.6%
2032 31.4% 36.9%
2031 31.8% 37.2%
2030 32.3% 37.6%
2029 33% 38.1%
2028 33.6% 38.7%
2027 34.1% 39.3%
2026 34.6% 40%
2025 35.2% 40.6%
2024 35.4% 40.9%
2023 35.6% 41.3%
2022 35.6% 41.6%
2021 35.7% 41.9%
2020 35.8% 42.2%
2019 36% 42.5%
2018 36.2% 42.9%
2017 36.4% 43.3%
2016 36.5% 43.6%
2015 36.7% 43.8%
2014 36.9% 43.9%
2013 37.1% 43.9%
2012 37.2% 43.7%
2011 37.4% 43.4%
2010 37.6% 43%
2009 37.8% 42.7%
2008 38% 42.4%
2007 38.3% 42.1%
2006 38.3% 42%
2005 38.3% 41.9%
2004 38.2% 41.7%
2003 38.1% 41.5%
2002 38.1% 41.4%
2001 38.2% 41.5%
2000 38.3% 41.9%
1999 38.6% 42.4%
1998 38.9% 43.1%
1997 39.3% 44%
1996 39.7% 45%
1995 39.9% 45.9%
1994 40.1% 46.6%
1993 40.3% 47.1%
1992 40.5% 46.8%
1991 40.6% 46.6%
1990 40.8% 47.1%
1989 40.9% 47.6%
1988 41.2% 47.9%
1987 41.5% 47.9%
1986 41.7% 47.9%
1985 42% 48%
1984 42.4% 48.1%
1983 42.9% 48.2%
1982 43.4% 48.3%
1981 43.9% 48.4%
1980 44.3% 48.7%
1979 44.8% 48.8%
1978 45.3% 48.5%
1977 45.8% 48.3%
1976 46.1% 48.2%
1975 46.2% 48.1%
1974 46.2% 48.1%
1973 46.2% 48.1%
1972 46.3% 48.2%
1971 46.4% 48.2%
1970 46.4% 48.3%
1969 46.3% 48.4%
1968 46.2% 48.5%
1967 46% 48.5%
1966 45.9% 48.6%
1965 45.9% 48.7%
1964 45.9% 48.8%
1963 45.9% 48.5%
1962 45.8% 48.1%
1961 45.7% 47.7%
1960 45.7% 47.3%

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/tonga/zimbabwe | CC BY

Children aged 0-14 make up 35.4% of the population in Tonga and 40.9% in Zimbabwe in 2024, compared to 40.8% and 47.1% respectively in 1990.

Demographics of Tonga and Zimbabwe compared.

Fertility rates around the globe

1x

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

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

Maternal mortality chart: Tonga vs Zimbabwe

Tonga
Zimbabwe
1x
Year Maternal mortality per 100K births
Tonga Zimbabwe
2023 67 358
2022 72 368
2021 76 446
2020 74 380
2019 73 388
2018 74 386
2017 77 389
2016 78 411
2015 79 428
2014 80 468
2013 80 525
2012 83 558
2011 84 564
2010 85 567
2009 91 540
2008 88 526
2007 88 519
2006 89 480
2005 92 454
2004 92 451
2003 95 455
2002 98 418
2001 98 467
2000 100 405
1999 99 399
1998 104 368
1997 111 357
1996 113 352
1995 117 332
1994 123 332
1993 127 331
1992 129 333
1991 134 332
1990 138 353
1989 139 382
1988 145 431
1987 147 480
1986 149 525
1985 148 573

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

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

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 67 deaths per 100,000 live births in Tonga, compared to 358 deaths in Zimbabwe.

Under-five mortality rates

Tonga
Zimbabwe

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Tonga Zimbabwe
2023 0.99% 4.42%
2022 1.02% 4.6%
2021 1.05% 4.76%
2020 1.08% 5.01%
2019 1.1% 5.11%
2018 1.12% 5.23%
2017 1.15% 5.5%
2016 1.17% 5.69%
2015 1.19% 5.98%
2014 1.22% 6.18%
2013 1.24% 6.55%
2012 1.26% 7.14%
2011 1.29% 7.88%
2010 1.31% 8.5%
2009 1.34% 9.03%
2008 1.37% 9.34%
2007 1.41% 9.47%
2006 1.44% 9.4%
2005 1.48% 9.23%
2004 1.52% 9.17%
2003 1.56% 8.85%
2002 1.61% 8.48%
2001 1.65% 9.79%
2000 1.7% 9.83%
1999 1.74% 9.92%
1998 1.78% 10%
1997 1.81% 10.1%
1996 1.85% 10%
1995 1.89% 9.83%
1994 1.94% 9.52%
1993 2% 9.16%
1992 2.06% 8.73%
1991 2.14% 8.33%
1990 2.21% 7.97%
1989 2.29% 7.69%
1988 2.37% 7.55%
1987 2.44% 7.61%
1986 2.51% 7.86%
1985 2.57% 8.31%
1984 2.63% 8.87%
1983 2.7% 9.5%
1982 2.78% 10.1%
1981 2.87% 10.7%
1980 2.97% 11.1%
1979 3.09% 11.3%
1978 3.22% 11.5%
1977 3.37% 11.5%
1976 3.53% 11.5%
1975 3.71% 11.4%
1974 3.9% 11.4%
1973 4.11% 11.4%
1972 4.35% 11.5%
1971 4.61% 11.5%
1970 4.91% 11.7%
1969 5.25% 11.8%
1968 5.63% 12.1%
1967 6.03% 12.4%
1966 6.45% 12.7%
1965 6.89% 13.1%
1964 7.35% 13.5%
1963 7.83% 14%
1962 - 14.4%
1961 - 14.8%
1960 - 15.2%

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

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

The chance that a newborn baby will die before reaching age five is 0.99% in Tonga and 4.42% in Zimbabwe. 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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