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Fertility & birth rates in Papua New Guinea and Sao Tome and Principe

Updated on by Georank team

Papua New Guinea has an annual birth rate of 24.6 births per 1,000 people, compared to 28.2 for Sao Tome and Principe. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 3.1 in Papua New Guinea and 3.64 in Sao Tome and Principe — 17.6% difference.

1960 vs 2023, the fertility rate has decreased by 48.5% in Papua New Guinea and by 41.6% in Sao Tome and Principe — in 1960, it was 6.02 and 6.24, respectively.

  • Papua New Guinea is ranked 55/196 by birth rate compared to 39/196 for Sao Tome and Principe.
  • The mean age for first-time mothers is 21.9 years in Papua New Guinea, compared to 19.4 years in Sao Tome and Principe.
  • The mean age at childbearing (for all the births, not just the first) is 29.2 in Papua New Guinea — it's 28.4 in Sao Tome and Principe.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 54.1 in Papua New Guinea vs 86.2 in Sao Tome and Principe.
  • In Papua New Guinea, 25.9% of the population is composed of women of reproductive age (15-49), compared to 25.2% in Sao Tome and Principe.

Fertility rate in Papua New Guinea vs Sao Tome and Principe by year

Papua New Guinea
Sao Tome and Principe
1x
Year Fertility rate
Papua New Guinea Sao Tome
2023 3.1 3.64
2022 3.17 3.7
2021 3.22 3.76
2020 3.27 3.83
2019 3.32 3.9
2018 3.38 3.98
2017 3.43 4.07
2016 3.5 4.2
2015 3.56 4.35
2014 3.63 4.49
2013 3.68 4.58
2012 3.75 4.66
2011 3.82 4.72
2010 3.88 4.77
2009 3.94 4.84
2008 4.01 4.91
2007 4.08 4.96
2006 4.15 4.93
2005 4.22 4.94
2004 4.28 4.96
2003 4.36 5.01
2002 4.42 5.06
2001 4.47 5.1
2000 4.53 5.16
1999 4.59 5.23
1998 4.63 5.3
1997 4.68 5.4
1996 4.73 5.47
1995 4.78 5.55
1994 4.87 5.56
1993 4.96 5.64
1992 5.03 5.7
1991 5.11 5.77
1990 5.18 5.83
1989 5.24 5.88
1988 5.3 5.94
1987 5.36 5.99
1986 5.42 6.05
1985 5.47 6.1
1984 5.51 6.16
1983 5.56 6.22
1982 5.59 6.28
1981 5.65 6.33
1980 5.71 6.39
1979 5.79 6.43
1978 5.88 6.47
1977 5.96 6.5
1976 6.02 6.52
1975 6.07 6.53
1974 6.11 6.53
1973 6.16 6.53
1972 6.2 6.51
1971 6.23 6.49
1970 6.25 6.47
1969 6.26 6.44
1968 6.25 6.42
1967 6.24 6.39
1966 6.23 6.37
1965 6.2 6.35
1964 6.19 6.33
1963 6.15 6.31
1962 6.14 6.28
1961 6.07 6.26
1960 6.02 6.24

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

GeoRank.org/birth-rate/papua-new-guinea/sao-tome-and-principe | CC BY

According to the latest available data on birth rates, the fertility rate in Papua New Guinea was 3.1 children per woman in 2023, compared to 3.64 in Sao Tome and Principe in 2023. The replacement level is considered to be 2.1 children per woman.

Check Papua New Guinea vs Sao Tome and Principe population clock for a dynamic visualization of the changing population.

Natural population change by year

Papua New Guinea
Sao Tome and Principe
1x
Year Natural population change
Papua New Guinea Sao Tome
2023 187,637 5,221
2022 186,861 5,102
2021 183,766 4,954
2020 189,130 4,874
2019 190,662 4,932
2018 190,662 4,957
2017 189,715 5,007
2016 189,281 5,125
2015 188,600 5,269
2014 187,592 5,381
2013 185,790 5,449
2012 183,658 5,501
2011 181,842 5,445
2010 178,998 5,391
2009 175,421 5,349
2008 172,823 5,297
2007 169,306 5,226
2006 166,540 5,057
2005 163,888 4,897
2004 161,023 4,810
2003 158,611 4,702
2002 155,091 4,591
2001 151,431 4,471
2000 147,496 4,334
1999 143,592 4,221
1998 136,677 4,120
1997 134,458 4,041
1996 129,802 3,993
1995 125,410 3,948
1994 122,113 3,860
1993 118,668 3,841
1992 114,818 3,822
1991 111,453 3,801
1990 110,033 3,719
1989 108,199 3,576
1988 106,256 3,544
1987 104,367 3,440
1986 102,346 3,180
1985 100,333 3,242
1984 98,103 3,163
1983 95,982 3,100
1982 93,522 3,047
1981 91,767 3,015
1980 90,266 2,965
1979 89,330 2,893
1978 88,747 2,800
1977 87,954 2,705
1976 86,965 2,608
1975 85,809 2,515
1974 84,829 2,422
1973 83,821 2,329
1972 82,672 2,232
1971 80,599 2,127
1970 78,712 1,980
1969 76,454 1,862
1968 73,983 1,767
1967 71,519 1,693
1966 69,206 1,642
1965 66,693 1,611
1964 64,558 1,600
1963 62,260 1,609
1962 59,974 1,625
1961 58,151 1,657
1960 56,326 1,547

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

GeoRank.org/birth-rate/papua-new-guinea/sao-tome-and-principe | 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 +1.81% in Papua New Guinea and +2.26% in Sao Tome and Principe.

For the past 10 years, the annual natural population change has been +2% in Papua New Guinea and +2.4% in Sao Tome and Principe.

Birth rate in Papua New Guinea vs Sao Tome and Principe by year

Papua New Guinea
Sao Tome and Principe

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Papua New Guinea Sao Tome
2023 24.6 28.2
2022 25.2 28.3
2021 25.6 28.5
2020 26.1 28.6
2019 26.5 29.2
2018 27 29.8
2017 27.4 30.6
2016 27.9 31.7
2015 28.4 33
2014 28.9 34.3
2013 29.4 35.4
2012 29.8 36.4
2011 30.3 36.8
2010 30.7 37.3
2009 31.1 37.9
2008 31.5 38.5
2007 31.9 38.9
2006 32.4 38.9
2005 32.8 39
2004 33.2 39.2
2003 33.7 39.6
2002 34 39.8
2001 34.2 40
2000 34.4 39.7
1999 34.7 39.4
1998 34.8 39.2
1997 34.8 39.2
1996 34.9 39.3
1995 35 39.5
1994 35.3 39.4
1993 35.6 39.8
1992 35.8 40.2
1991 36.1 40.7
1990 36.7 40.7
1989 37.1 40.9
1988 37.3 40.9
1987 37.4 41
1986 37.5 41
1985 37.7 41
1984 37.7 41.1
1983 37.8 41.2
1982 37.7 41.3
1981 37.9 41.5
1980 38.1 41.6
1979 38.7 41.6
1978 39.3 41.4
1977 39.9 41.3
1976 40.5 41.1
1975 41.1 40.9
1974 41.8 40.6
1973 42.6 40.3
1972 43.3 39.9
1971 43.7 39.5
1970 44 38.8
1969 44.2 38.2
1968 44.4 37.8
1967 44.5 37.7
1966 44.6 38
1965 44.6 38.6
1964 44.7 39.7
1963 44.7 41.1
1962 44.9 42.7
1961 44.9 44.6
1960 45.1 44.6

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

GeoRank.org/birth-rate/papua-new-guinea/sao-tome-and-principe | CC BY

The latest reported birth rate per 1,000 people in 2023 was 24.6 in Papua New Guinea and 28.2 in Sao Tome and Principe, compared with 45.1 and 44.6, respectively, in 1960.

Birth rate data compared

Papua New Guinea Sao Tome
Fertility rate 3.1 3.64
Fertility rate rank 55/196 41/196
Birth rate 24.6 28.2
Birth rate rank 55/196 39/196
Population change due to births and deaths +187,637 +5,221
Natural population change rank 63/196 126/196
Natural population change rate +1.81% +2.26%
Population growth +1.8% +2.02%
Population growth rank 59/197 49/197
Age at first childbirth 21.9 years 19.4 years
Average age at childbearing 29.2 years 28.4 years
Annual births per 1,000 women ages 15-19 52.3 82.5
Annual births per 1,000 women ages 20-29 144.3 169.9
Annual births per 1,000 women ages 30+ 46.2 47.4
Female of reproductive age (15-49), share of population 25.9% 25.2%
Any modern method of contraceptive prevalence among married women ages 15-49 30.5% 46%
Share of births attended by skilled health staff 56.4% 96.8%
Maternal mortality per live birth 0.19% 0.08%
Neonatal mortality rate (before reaching 28 days of age) 2.05% 0.68%
Infant mortality rate (before reaching 1 year of age) 3.2% 0.94%
Mortality rate before reaching 5 years of age 4.03% 1.39%
Life expectancy 66.5 years 70.3 years

Children 0-14 years as share of population

Papua New Guinea
Factual

UN forecast
Sao Tome and Principe
Factual

UN forecast
1x
Year Young
Papua New Guinea Sao Tome
2100 19% 19.5%
2099 19.1% 19.6%
2098 19.2% 19.8%
2097 19.3% 19.9%
2096 19.4% 20%
2095 19.5% 20.2%
2094 19.6% 20.3%
2093 19.7% 20.4%
2092 19.8% 20.6%
2091 19.9% 20.7%
2090 20% 20.9%
2089 20.1% 21.1%
2088 20.2% 21.2%
2087 20.4% 21.4%
2086 20.5% 21.6%
2085 20.6% 21.8%
2084 20.7% 22%
2083 20.8% 22.2%
2082 20.9% 22.4%
2081 21% 22.6%
2080 21.2% 22.9%
2079 21.3% 23.1%
2078 21.4% 23.3%
2077 21.5% 23.5%
2076 21.7% 23.7%
2075 21.8% 24%
2074 21.9% 24.2%
2073 22.1% 24.4%
2072 22.2% 24.6%
2071 22.4% 24.8%
2070 22.5% 25%
2069 22.7% 25.2%
2068 22.8% 25.4%
2067 23% 25.6%
2066 23.2% 25.9%
2065 23.3% 26.1%
2064 23.5% 26.3%
2063 23.7% 26.5%
2062 23.9% 26.8%
2061 24.1% 27%
2060 24.3% 27.3%
2059 24.5% 27.5%
2058 24.6% 27.8%
2057 24.8% 28.1%
2056 25% 28.4%
2055 25.2% 28.7%
2054 25.4% 29%
2053 25.6% 29.4%
2052 25.8% 29.7%
2051 26% 30.1%
2050 26.2% 30.4%
2049 26.4% 30.8%
2048 26.6% 31.1%
2047 26.8% 31.5%
2046 27% 31.8%
2045 27.2% 32.1%
2044 27.4% 32.5%
2043 27.6% 32.8%
2042 27.9% 33.1%
2041 28.1% 33.4%
2040 28.4% 33.6%
2039 28.7% 33.9%
2038 28.9% 34.1%
2037 29.2% 34.4%
2036 29.6% 34.6%
2035 29.9% 34.7%
2034 30.2% 34.9%
2033 30.6% 35.1%
2032 30.9% 35.3%
2031 31.2% 35.5%
2030 31.6% 35.8%
2029 31.9% 36.1%
2028 32.3% 36.6%
2027 32.6% 37%
2026 33% 37.3%
2025 33.3% 37.6%
2024 33.5% 37.8%
2023 33.8% 38.3%
2022 34.1% 38.8%
2021 34.4% 39.4%
2020 34.7% 39.9%
2019 35% 40.5%
2018 35.3% 40.9%
2017 35.6% 41.4%
2016 35.9% 41.7%
2015 36.2% 41.9%
2014 36.5% 42%
2013 36.7% 42%
2012 37% 42%
2011 37.2% 42%
2010 37.5% 42.1%
2009 37.7% 42.1%
2008 38% 42.1%
2007 38.3% 42%
2006 38.5% 42%
2005 38.8% 42%
2004 39% 42.1%
2003 39.3% 42.2%
2002 39.5% 42.3%
2001 39.8% 42.5%
2000 40% 42.8%
1999 40.2% 43.4%
1998 40.4% 43.9%
1997 40.6% 44.3%
1996 40.8% 44.7%
1995 41% 44.9%
1994 41.2% 45.1%
1993 41.5% 45.2%
1992 41.7% 45.2%
1991 41.9% 45.1%
1990 42.1% 45.1%
1989 42.3% 45%
1988 42.4% 45%
1987 42.4% 44.9%
1986 42.5% 44.7%
1985 42.6% 44.5%
1984 42.8% 44.4%
1983 42.9% 44.5%
1982 43% 44.5%
1981 43.2% 44.7%
1980 43.5% 44.9%
1979 44% 45.1%
1978 44.4% 45.2%
1977 44.9% 45.3%
1976 45.2% 45.4%
1975 45.5% 45.5%
1974 45.8% 45.6%
1973 45.9% 45.7%
1972 46% 45.9%
1971 46% 46.1%
1970 45.8% 46.2%
1969 45.6% 45.8%
1968 45.3% 44.9%
1967 45.1% 44%
1966 44.9% 42.9%
1965 44.6% 41.6%
1964 44.4% 40.2%
1963 44.2% 38.5%
1962 43.9% 36.6%
1961 43.7% 34.3%
1960 43.4% 32.9%

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/papua-new-guinea/sao-tome-and-principe | CC BY

Children aged 0-14 make up 33.5% of the population in Papua New Guinea and 37.8% in Sao Tome and Principe in 2024, compared to 42.1% and 45.1% respectively in 1990.

Demographics of Papua New Guinea and Sao Tome and Principe compared.

Fertility rates around the globe

1x

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

GeoRank.org/birth-rate/papua-new-guinea/sao-tome-and-principe | CC BY

Maternal mortality chart: Papua New Guinea vs Sao Tome and Principe

Papua New Guinea
Sao Tome and Principe
1x
Year Maternal mortality per 100K births
Papua New Guinea Sao Tome
2023 189 75
2022 189 82
2021 223 98
2020 194 92
2019 199 95
2018 205 100
2017 207 110
2016 214 119
2015 221 128
2014 232 138
2013 243 150
2012 257 158
2011 271 164
2010 289 170
2009 302 172
2008 315 174
2007 326 174
2006 325 177
2005 326 181
2004 326 177
2003 328 178
2002 329 179
2001 325 178
2000 323 180
1999 321 179
1998 325 175
1997 316 173
1996 316 171
1995 318 172
1994 324 168
1993 333 166
1992 340 164
1991 354 166
1990 360 164
1989 369 167
1988 377 157
1987 379 161
1986 386 175
1985 393 159

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

GeoRank.org/birth-rate/papua-new-guinea/sao-tome-and-principe | CC BY

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 189 deaths per 100,000 live births in Papua New Guinea, compared to 75 deaths in Sao Tome and Principe.

Under-five mortality rates

Papua New Guinea
Sao Tome and Principe

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Papua New Guinea Sao Tome
2023 4.03% 1.39%
2022 4.17% 1.46%
2021 4.31% 1.53%
2020 4.45% 1.6%
2019 4.59% 1.7%
2018 4.72% 1.81%
2017 4.87% 1.95%
2016 5.02% 2.11%
2015 5.17% 2.31%
2014 5.3% 2.54%
2013 5.44% 2.77%
2012 5.59% 3.04%
2011 5.73% 3.33%
2010 5.88% 3.63%
2009 6.02% 3.95%
2008 6.16% 4.3%
2007 6.31% 4.68%
2006 6.44% 5.11%
2005 6.58% 5.56%
2004 6.71% 6.05%
2003 6.84% 6.57%
2002 6.96% 7.1%
2001 7.08% 7.66%
2000 7.19% 8.21%
1999 7.3% 8.76%
1998 7.41% 9.26%
1997 7.52% 9.73%
1996 7.64% 10.1%
1995 7.77% 10.4%
1994 7.89% 10.7%
1993 8.03% 10.8%
1992 8.17% 10.9%
1991 8.31% 10.9%
1990 8.47% 10.8%
1989 8.63% 10.7%
1988 8.78% 10.6%
1987 8.96% 10.4%
1986 9.12% 11.4%
1985 9.3% 9.99%
1984 9.5% 9.77%
1983 9.71% 9.56%
1982 9.94% 9.37%
1981 10.2% 9.21%
1980 10.4% 9.1%
1979 10.7% 9.02%
1978 11% 8.96%
1977 11.3% 8.93%
1976 11.7% 8.89%
1975 12.1% 8.85%
1974 12.4% 8.79%
1973 12.9% 8.73%
1972 13.3% 8.67%
1971 13.7% 8.63%
1970 14.2% 8.64%
1969 14.7% 8.71%
1968 15.2% 8.85%
1967 15.8% 9.04%
1966 16.3% 9.29%
1965 16.9% 9.56%
1964 17.4% -
1963 18% -
1962 18.6% -
1961 19.2% -
1960 19.8% -

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

GeoRank.org/birth-rate/papua-new-guinea/sao-tome-and-principe | CC BY

The chance that a newborn baby will die before reaching age five is 4.03% in Papua New Guinea and 1.39% in Sao Tome and Principe. 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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