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Fertility & birth rates in Sao Tome and Principe and United States

Updated on by Georank team

Sao Tome and Principe has an annual birth rate of 28.2 births per 1,000 people, compared to 10.7 for the United States. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 3.64 in Sao Tome and Principe and 1.62 in the United States — 55.6% difference.

1960 vs 2023, the fertility rate has decreased by 41.6% in Sao Tome and Principe and by 55.8% in the United States — in 1960, it was 6.24 and 3.65, respectively.

  • Sao Tome and Principe is ranked 39/196 by birth rate compared to 140/196 for the United States.
  • The mean age for first-time mothers is 19.4 years in Sao Tome and Principe, compared to 27.3 years in the United States.
  • The mean age at childbearing (for all the births, not just the first) is 28.4 in Sao Tome and Principe — it's 30.2 in the United States.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 86.2 in Sao Tome and Principe vs 13.1 in the United States.
  • In Sao Tome and Principe, 25.2% of the population is composed of women of reproductive age (15-49), compared to 22.5% in the United States.

Fertility rate in Sao Tome and Principe vs United States by year

Sao Tome and Principe
United States
1x
Year Fertility rate
Sao Tome United States
2023 3.64 1.62
2022 3.7 1.66
2021 3.76 1.66
2020 3.83 1.64
2019 3.9 1.71
2018 3.98 1.73
2017 4.07 1.77
2016 4.2 1.82
2015 4.35 1.84
2014 4.49 1.86
2013 4.58 1.86
2012 4.66 1.88
2011 4.72 1.89
2010 4.77 1.93
2009 4.84 2
2008 4.91 2.07
2007 4.96 2.12
2006 4.93 2.11
2005 4.94 2.06
2004 4.96 2.05
2003 5.01 2.05
2002 5.06 2.02
2001 5.1 2.03
2000 5.16 2.06
1999 5.23 2.01
1998 5.3 2
1997 5.4 1.97
1996 5.47 1.98
1995 5.55 1.98
1994 5.56 2
1993 5.64 2.02
1992 5.7 2.05
1991 5.77 2.06
1990 5.83 2.08
1989 5.88 2.01
1988 5.94 1.93
1987 5.99 1.87
1986 6.05 1.84
1985 6.1 1.84
1984 6.16 1.81
1983 6.22 1.8
1982 6.28 1.83
1981 6.33 1.81
1980 6.39 1.84
1979 6.43 1.81
1978 6.47 1.76
1977 6.5 1.79
1976 6.52 1.74
1975 6.53 1.77
1974 6.53 1.84
1973 6.53 1.88
1972 6.51 2.01
1971 6.49 2.27
1970 6.47 2.48
1969 6.44 2.46
1968 6.42 2.46
1967 6.39 2.56
1966 6.37 2.72
1965 6.35 2.91
1964 6.33 3.19
1963 6.31 3.32
1962 6.28 3.46
1961 6.26 3.62
1960 6.24 3.65

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

GeoRank.org/birth-rate/sao-tome-and-principe/united-states | CC BY

According to the latest available data on birth rates, the fertility rate in Sao Tome and Principe was 3.64 children per woman in 2023, compared to 1.62 in the United States in 2023. The replacement level is considered to be 2.1 children per woman.

Check Sao Tome and Principe vs the United States population clock for a dynamic visualization of the changing population.

Natural population change by year

Sao Tome and Principe
United States
1x
Year Natural population change
Sao Tome United States
2023 5,221 502,372
2022 5,102 399,926
2021 4,954 199,137
2020 4,874 208,862
2019 4,932 887,476
2018 4,957 955,022
2017 5,007 1,028,037
2016 5,125 1,197,627
2015 5,269 1,270,126
2014 5,381 1,357,281
2013 5,449 1,322,711
2012 5,501 1,411,822
2011 5,445 1,441,697
2010 5,391 1,548,182
2009 5,349 1,717,920
2008 5,297 1,794,154
2007 5,226 1,897,757
2006 5,057 1,849,955
2005 4,897 1,684,445
2004 4,810 1,698,271
2003 4,702 1,653,615
2002 4,591 1,581,938
2001 4,471 1,595,826
2000 4,334 1,664,758
1999 4,221 1,564,050
1998 4,120 1,573,857
1997 4,041 1,501,014
1996 3,993 1,510,137
1995 3,948 1,546,031
1994 3,860 1,633,302
1993 3,841 1,717,685
1992 3,822 1,875,328
1991 3,801 1,926,543
1990 3,719 2,026,068
1989 3,576 1,875,826
1988 3,544 1,735,943
1987 3,440 1,720,252
1986 3,180 1,656,917
1985 3,242 1,689,258
1984 3,163 1,627,192
1983 3,100 1,636,544
1982 3,047 1,714,317
1981 3,015 1,652,153
1980 2,965 1,608,450
1979 2,893 1,597,894
1978 2,800 1,402,283
1977 2,705 1,431,556
1976 2,608 1,264,604
1975 2,515 1,252,644
1974 2,422 1,218,968
1973 2,329 1,165,499
1972 2,232 1,301,355
1971 2,127 1,640,519
1970 1,980 1,824,965
1969 1,862 1,702,487
1968 1,767 1,565,507
1967 1,693 1,669,181
1966 1,642 1,749,387
1965 1,611 1,943,030
1964 1,600 2,245,099
1963 1,609 2,289,826
1962 1,625 2,406,337
1961 1,657 2,571,681
1960 1,547 2,565,530

Data sources: World Bank | Health (1960–2023, retrieved 2026-04-06); U.S. Census Bureau (1960–2023, retrieved 2026-02-08).

GeoRank.org/birth-rate/sao-tome-and-principe/united-states | 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 +2.26% in Sao Tome and Principe and +0.15% in the United States.

For the past 10 years, the annual natural population change has been +2.4% in Sao Tome and Principe and +0.25% in the United States.

Birth rate in Sao Tome and Principe vs United States by year

Sao Tome and Principe
United States

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Sao Tome United States
2023 28.2 10.7
2022 28.3 11
2021 28.5 11
2020 28.6 10.9
2019 29.2 11.4
2018 29.8 11.6
2017 30.6 11.8
2016 31.7 12.2
2015 33 12.4
2014 34.3 12.5
2013 35.4 12.4
2012 36.4 12.6
2011 36.8 12.7
2010 37.3 13
2009 37.9 13.5
2008 38.5 14
2007 38.9 14.3
2006 38.9 14.3
2005 39 14
2004 39.2 14
2003 39.6 14.1
2002 39.8 14
2001 40 14.1
2000 39.7 14.4
1999 39.4 14.2
1998 39.2 14.3
1997 39.2 14.2
1996 39.3 14.4
1995 39.5 14.6
1994 39.4 15
1993 39.8 15.4
1992 40.2 15.8
1991 40.7 16.2
1990 40.7 16.7
1989 40.9 16.4
1988 40.9 16
1987 41 15.7
1986 41 15.6
1985 41 15.8
1984 41.1 15.6
1983 41.2 15.6
1982 41.3 15.9
1981 41.5 15.8
1980 41.6 15.9
1979 41.6 15.6
1978 41.4 15
1977 41.3 15.1
1976 41.1 14.6
1975 40.9 14.6
1974 40.6 14.8
1973 40.3 14.8
1972 39.9 15.6
1971 39.5 17.2
1970 38.8 18.4
1969 38.2 17.9
1968 37.8 17.6
1967 37.7 17.8
1966 38 18.4
1965 38.6 19.4
1964 39.7 21.1
1963 41.1 21.7
1962 42.7 22.4
1961 44.6 23.3
1960 44.6 23.7

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

GeoRank.org/birth-rate/sao-tome-and-principe/united-states | CC BY

The latest reported birth rate per 1,000 people in 2023 was 28.2 in Sao Tome and Principe and 10.7 in the United States, compared with 44.6 and 23.7, respectively, in 1960.

Birth rate data compared

Sao Tome United States
Fertility rate 3.64 1.62
Fertility rate rank 41/196 125/196
Birth rate 28.2 10.7
Birth rate rank 39/196 140/196
Population change due to births and deaths +5,221 +502,372
Natural population change rank 126/196 37/196
Natural population change rate +2.26% +0.15%
Population growth +2.02% +0.49%
Population growth rank 49/197 134/197
Age at first childbirth 19.4 years 27.3 years
Average age at childbearing 28.4 years 30.2 years
Annual births per 1,000 women ages 15-19 82.5 11.3
Annual births per 1,000 women ages 20-29 169.9 72.5
Annual births per 1,000 women ages 30+ 47.4 17.4
Female of reproductive age (15-49), share of population 25.2% 22.5%
Any modern method of contraceptive prevalence among married women ages 15-49 46% 66.1%
Share of births attended by skilled health staff 96.8% 99.1%
Maternal mortality per live birth 0.08% 0.02%
Neonatal mortality rate (before reaching 28 days of age) 0.68% 0.34%
Infant mortality rate (before reaching 1 year of age) 0.94% 0.55%
Mortality rate before reaching 5 years of age 1.39% 0.65%
Life expectancy 70.3 years 79.8 years

Children 0-14 years as share of population

Sao Tome and Principe
Factual

UN forecast
United States
Factual

UN forecast
1x
Year Young
Sao Tome United States
2100 19.5% 14.4%
2099 19.6% 14.4%
2098 19.8% 14.4%
2097 19.9% 14.4%
2096 20% 14.4%
2095 20.2% 14.5%
2094 20.3% 14.5%
2093 20.4% 14.5%
2092 20.6% 14.5%
2091 20.7% 14.6%
2090 20.9% 14.6%
2089 21.1% 14.7%
2088 21.2% 14.7%
2087 21.4% 14.7%
2086 21.6% 14.8%
2085 21.8% 14.8%
2084 22% 14.8%
2083 22.2% 14.9%
2082 22.4% 14.9%
2081 22.6% 14.9%
2080 22.9% 14.9%
2079 23.1% 14.9%
2078 23.3% 14.9%
2077 23.5% 14.9%
2076 23.7% 14.9%
2075 24% 14.9%
2074 24.2% 14.9%
2073 24.4% 14.9%
2072 24.6% 14.9%
2071 24.8% 14.9%
2070 25% 14.9%
2069 25.2% 14.9%
2068 25.4% 14.9%
2067 25.6% 14.9%
2066 25.9% 14.9%
2065 26.1% 15%
2064 26.3% 15%
2063 26.5% 15%
2062 26.8% 15.1%
2061 27% 15.1%
2060 27.3% 15.2%
2059 27.5% 15.3%
2058 27.8% 15.4%
2057 28.1% 15.5%
2056 28.4% 15.5%
2055 28.7% 15.6%
2054 29% 15.7%
2053 29.4% 15.8%
2052 29.7% 15.8%
2051 30.1% 15.9%
2050 30.4% 15.9%
2049 30.8% 16%
2048 31.1% 16%
2047 31.5% 16%
2046 31.8% 16%
2045 32.1% 16%
2044 32.5% 16%
2043 32.8% 16%
2042 33.1% 16%
2041 33.4% 15.9%
2040 33.6% 15.9%
2039 33.9% 15.9%
2038 34.1% 15.9%
2037 34.4% 15.9%
2036 34.6% 15.9%
2035 34.7% 15.9%
2034 34.9% 15.9%
2033 35.1% 16%
2032 35.3% 16.1%
2031 35.5% 16.2%
2030 35.8% 16.3%
2029 36.1% 16.5%
2028 36.6% 16.6%
2027 37% 16.8%
2026 37.3% 17%
2025 37.6% 17.2%
2024 37.8% 17.3%
2023 38.3% 17.6%
2022 38.8% 17.9%
2021 39.4% 18.1%
2020 39.9% 18.4%
2019 40.5% 18.6%
2018 40.9% 18.8%
2017 41.4% 18.9%
2016 41.7% 19.1%
2015 41.9% 19.2%
2014 42% 19.3%
2013 42% 19.4%
2012 42% 19.5%
2011 42% 19.6%
2010 42.1% 19.7%
2009 42.1% 19.8%
2008 42.1% 19.9%
2007 42% 20%
2006 42% 20.2%
2005 42% 20.3%
2004 42.1% 20.5%
2003 42.2% 20.7%
2002 42.3% 20.9%
2001 42.5% 21%
2000 42.8% 21.2%
1999 43.4% 21.3%
1998 43.9% 21.4%
1997 44.3% 21.5%
1996 44.7% 21.7%
1995 44.9% 21.8%
1994 45.1% 21.9%
1993 45.2% 21.9%
1992 45.2% 21.8%
1991 45.1% 21.7%
1990 45.1% 21.6%
1989 45% 21.5%
1988 45% 21.3%
1987 44.9% 21.3%
1986 44.7% 21.3%
1985 44.5% 21.5%
1984 44.4% 21.7%
1983 44.5% 21.8%
1982 44.5% 22%
1981 44.7% 22.1%
1980 44.9% 22.4%
1979 45.1% 22.8%
1978 45.2% 23.2%
1977 45.3% 23.8%
1976 45.4% 24.4%
1975 45.5% 25.2%
1974 45.6% 25.9%
1973 45.7% 26.6%
1972 45.9% 27.4%
1971 46.1% 28%
1970 46.2% 28.6%
1969 45.8% 29%
1968 44.9% 29.5%
1967 44% 30%
1966 42.9% 30.4%
1965 41.6% 30.7%
1964 40.2% 30.9%
1963 38.5% 31.1%
1962 36.6% 31.3%
1961 34.3% 31.4%
1960 32.9% 31.3%

Data sources: World Bank | Health (1960–2024, retrieved 2026-04-06); United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10); U.S. Census Bureau (1960–2024, retrieved 2026-02-08).

GeoRank.org/birth-rate/sao-tome-and-principe/united-states | CC BY

Children aged 0-14 make up 37.8% of the population in Sao Tome and Principe and 17.3% in the United States in 2024, compared to 45.1% and 21.6% respectively in 1990.

Demographics of Sao Tome and Principe and the United States compared.

Fertility rates around the globe

1x

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

GeoRank.org/birth-rate/sao-tome-and-principe/united-states | CC BY

Maternal mortality chart: Sao Tome and Principe vs United States

Sao Tome and Principe
United States
1x
Year Maternal mortality per 100K births
Sao Tome United States
2023 75 17
2022 82 20
2021 98 31
2020 92 22
2019 95 18
2018 100 18
2017 110 18
2016 119 18
2015 128 17
2014 138 17
2013 150 16
2012 158 16
2011 164 15
2010 170 15
2009 172 15
2008 174 14
2007 174 13
2006 177 13
2005 181 13
2004 177 13
2003 178 13
2002 179 13
2001 178 13
2000 180 12
1999 179 12
1998 175 11
1997 173 11
1996 171 11
1995 172 12
1994 168 11
1993 166 12
1992 164 11
1991 166 12
1990 164 12
1989 167 12
1988 157 12
1987 161 11
1986 175 11
1985 159 11

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

GeoRank.org/birth-rate/sao-tome-and-principe/united-states | CC BY

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 75 deaths per 100,000 live births in Sao Tome and Principe, compared to 17 deaths in the United States.

U.S. figures are less comparable to other countries, because reporting changes between 2003 and 2018 doubled the number of maternal deaths captured in official records without an actual doubling in mortality, and coding was revised again in 2018.

Under-five mortality rates

Sao Tome and Principe
United States

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Sao Tome United States
2023 1.39% 0.65%
2022 1.46% 0.65%
2021 1.53% 0.65%
2020 1.6% 0.65%
2019 1.7% 0.65%
2018 1.81% 0.65%
2017 1.95% 0.66%
2016 2.11% 0.67%
2015 2.31% 0.68%
2014 2.54% 0.68%
2013 2.77% 0.69%
2012 3.04% 0.7%
2011 3.33% 0.72%
2010 3.63% 0.73%
2009 3.95% 0.75%
2008 4.3% 0.76%
2007 4.68% 0.77%
2006 5.11% 0.79%
2005 5.56% 0.8%
2004 6.05% 0.81%
2003 6.57% 0.81%
2002 7.1% 0.82%
2001 7.66% 0.83%
2000 8.21% 0.84%
1999 8.76% 0.86%
1998 9.26% 0.87%
1997 9.73% 0.89%
1996 10.1% 0.92%
1995 10.4% 0.95%
1994 10.7% 0.98%
1993 10.8% 1.01%
1992 10.9% 1.05%
1991 10.9% 1.09%
1990 10.8% 1.12%
1989 10.7% 1.16%
1988 10.6% 1.19%
1987 10.4% 1.21%
1986 11.4% 1.24%
1985 9.99% 1.27%
1984 9.77% 1.3%
1983 9.56% 1.34%
1982 9.37% 1.39%
1981 9.21% 1.44%
1980 9.1% 1.5%
1979 9.02% 1.56%
1978 8.96% 1.63%
1977 8.93% 1.71%
1976 8.89% 1.79%
1975 8.85% 1.88%
1974 8.79% 1.97%
1973 8.73% 2.06%
1972 8.67% 2.15%
1971 8.63% 2.24%
1970 8.64% 2.32%
1969 8.71% 2.41%
1968 8.85% 2.49%
1967 9.04% 2.57%
1966 9.29% 2.64%
1965 9.56% 2.71%
1964 - 2.77%
1963 - 2.83%
1962 - 2.89%
1961 - 2.95%
1960 - 3.01%

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

GeoRank.org/birth-rate/sao-tome-and-principe/united-states | CC BY

The chance that a newborn baby will die before reaching age five is 1.39% in Sao Tome and Principe and 0.65% in the United States. 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. U.S. Census Bureau (1960–2025, retrieved 2026-02-08)
  4. United Nations Economic Commission for Europe (UNECE) (2021, retrieved 2026-03-10)
  5. Central Intelligence Agency (CIA) (2025, retrieved 2026-02-20)

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