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Fertility & birth rates in Sao Tome and Principe and Slovakia

Updated on by Georank team

Sao Tome and Principe has an annual birth rate of 28.2 births per 1,000 people, compared to 9 for Slovakia. 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 1.49 in Slovakia — 59.1% difference.

1960 vs 2023, the fertility rate has decreased by 41.6% in Sao Tome and Principe and by 51% in Slovakia — in 1960, it was 6.24 and 3.04, respectively.

  • Sao Tome and Principe is ranked 39/196 by birth rate compared to 162/196 for Slovakia.
  • The mean age for first-time mothers is 19.4 years in Sao Tome and Principe, compared to 27.3 years in Slovakia.
  • The mean age at childbearing (for all the births, not just the first) is 28.4 in Sao Tome and Principe — it's 29.1 in Slovakia.
  • 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 24.6 in Slovakia.
  • In Sao Tome and Principe, 25.2% of the population is composed of women of reproductive age (15-49), compared to 22.5% in Slovakia.

Fertility rate in Sao Tome and Principe vs Slovakia by year

Sao Tome and Principe
Slovakia
1x
Year Fertility rate
Sao Tome Slovakia
2023 3.64 1.49
2022 3.7 1.57
2021 3.76 1.63
2020 3.83 1.59
2019 3.9 1.57
2018 3.98 1.54
2017 4.07 1.52
2016 4.2 1.48
2015 4.35 1.4
2014 4.49 1.37
2013 4.58 1.34
2012 4.66 1.34
2011 4.72 1.45
2010 4.77 1.43
2009 4.84 1.44
2008 4.91 1.34
2007 4.96 1.27
2006 4.93 1.25
2005 4.94 1.27
2004 4.96 1.25
2003 5.01 1.2
2002 5.06 1.19
2001 5.1 1.2
2000 5.16 1.3
1999 5.23 1.33
1998 5.3 1.37
1997 5.4 1.43
1996 5.47 1.47
1995 5.55 1.52
1994 5.56 1.67
1993 5.64 1.87
1992 5.7 1.93
1991 5.77 2.05
1990 5.83 2.09
1989 5.88 2.07
1988 5.94 2.13
1987 5.99 2.14
1986 6.05 2.2
1985 6.1 2.26
1984 6.16 2.26
1983 6.22 2.28
1982 6.28 2.28
1981 6.33 2.29
1980 6.39 2.32
1979 6.43 2.45
1978 6.47 2.47
1977 6.5 2.49
1976 6.52 2.55
1975 6.53 2.55
1974 6.53 2.61
1973 6.53 2.56
1972 6.51 2.49
1971 6.49 2.43
1970 6.47 2.41
1969 6.44 2.43
1968 6.42 2.39
1967 6.39 2.48
1966 6.37 2.66
1965 6.35 2.78
1964 6.33 2.89
1963 6.31 2.92
1962 6.28 2.83
1961 6.26 2.96
1960 6.24 3.04

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

GeoRank.org/birth-rate/sao-tome-and-principe/slovakia | 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 1.49 in Slovakia in 2023. The replacement level is considered to be 2.1 children per woman.

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

Natural population change by year

Sao Tome and Principe
Slovakia
1x
Year Natural population change
Sao Tome Slovakia
2023 5,221 -5,427
2022 5,102 -7,062
2021 4,954 -16,886
2020 4,874 -2,184
2019 4,932 3,818
2018 4,957 3,268
2017 5,007 4,351
2016 5,125 5,431
2015 5,269 2,170
2014 5,381 3,793
2013 5,449 2,707
2012 5,501 3,245
2011 5,445 9,177
2010 5,391 7,008
2009 5,349 8,619
2008 5,297 4,303
2007 5,226 537
2006 5,057 537
2005 4,897 537
2004 4,810 1,611
2003 4,702 -537
2002 4,591 -538
2001 4,471 -1,076
2000 4,334 2,155
1999 4,221 3,777
1998 4,120 4,312
1997 4,041 6,999
1996 3,993 9,135
1995 3,948 9,115
1994 3,860 14,970
1993 3,841 20,769
1992 3,822 21,220
1991 3,801 23,865
1990 3,719 25,436
1989 3,576 26,380
1988 3,544 30,979
1987 3,440 31,859
1986 3,180 34,279
1985 3,242 37,680
1984 3,163 38,966
1983 3,100 39,717
1982 3,047 41,958
1981 3,015 43,640
1980 2,965 44,320
1979 2,893 52,353
1978 2,800 52,324
1977 2,705 52,762
1976 2,608 54,121
1975 2,515 52,604
1974 2,422 52,524
1973 2,329 49,199
1972 2,232 46,426
1971 2,127 40,105
1970 1,980 38,575
1969 1,862 39,312
1968 1,767 38,113
1967 1,693 41,824
1966 1,642 45,440
1965 1,611 48,517
1964 1,600 54,092
1963 1,609 54,382
1962 1,625 49,587
1961 1,657 55,749
1960 1,547 56,546

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

GeoRank.org/birth-rate/sao-tome-and-principe/slovakia | 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 -0.1% in Slovakia.

For the past 10 years, the annual natural population change has been +2.4% in Sao Tome and Principe and -0.02% in Slovakia.

Birth rate in Sao Tome and Principe vs Slovakia by year

Sao Tome and Principe
Slovakia

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Sao Tome Slovakia
2023 28.2 9
2022 28.3 9.7
2021 28.5 10.4
2020 28.6 10.4
2019 29.2 10.5
2018 29.8 10.6
2017 30.6 10.7
2016 31.7 10.6
2015 33 10.3
2014 34.3 10.2
2013 35.4 10.1
2012 36.4 10.3
2011 36.8 11.3
2010 37.3 11.2
2009 37.9 11.4
2008 38.5 10.7
2007 38.9 10.1
2006 38.9 10
2005 39 10.1
2004 39.2 10
2003 39.6 9.6
2002 39.8 9.5
2001 40 9.5
2000 39.7 10.2
1999 39.4 10.4
1998 39.2 10.7
1997 39.2 11
1996 39.3 11.2
1995 39.5 11.5
1994 39.4 12.4
1993 39.8 13.8
1992 40.2 14.1
1991 40.7 14.8
1990 40.7 15.1
1989 40.9 15.2
1988 40.9 15.9
1987 41 16.1
1986 41 16.8
1985 41 17.5
1984 41.1 17.7
1983 41.2 18.1
1982 41.3 18.3
1981 41.5 18.6
1980 41.6 19.1
1979 41.6 20.3
1978 41.4 20.5
1977 41.3 20.6
1976 41.1 20.8
1975 40.9 20.6
1974 40.6 20.8
1973 40.3 20
1972 39.9 19.1
1971 39.5 18.2
1970 38.8 17.8
1969 38.2 17.7
1968 37.8 17
1967 37.7 17.4
1966 38 18.5
1965 38.6 19.3
1964 39.7 20.1
1963 41.1 20.4
1962 42.7 19.8
1961 44.6 20.8
1960 44.6 21.7

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

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

The latest reported birth rate per 1,000 people in 2023 was 28.2 in Sao Tome and Principe and 9 in Slovakia, compared with 44.6 and 21.7, respectively, in 1960.

Birth rate data compared

Sao Tome Slovakia
Fertility rate 3.64 1.49
Fertility rate rank 41/196 147/196
Birth rate 28.2 9
Birth rate rank 39/196 162/196
Population change due to births and deaths +5,221 -5,427
Natural population change rank 126/196 169/196
Natural population change rate +2.26% -0.1%
Population growth +2.02% -0.09%
Population growth rank 49/197 172/197
Age at first childbirth 19.4 years 27.3 years
Average age at childbearing 28.4 years 29.1 years
Annual births per 1,000 women ages 15-19 82.5 24.1
Annual births per 1,000 women ages 20-29 169.9 74
Annual births per 1,000 women ages 30+ 47.4 12.7
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% n/a
Share of births attended by skilled health staff 96.8% 98%
Maternal mortality per live birth 0.08% 0.004%
Neonatal mortality rate (before reaching 28 days of age) 0.68% 0.3%
Infant mortality rate (before reaching 1 year of age) 0.94% 0.51%
Mortality rate before reaching 5 years of age 1.39% 0.61%
Life expectancy 70.3 years 78.8 years

Children 0-14 years as share of population

Sao Tome and Principe
Factual

UN forecast
Slovakia
Factual

UN forecast
1x
Year Young
Sao Tome Slovakia
2100 19.5% 12.2%
2099 19.6% 12.3%
2098 19.8% 12.3%
2097 19.9% 12.4%
2096 20% 12.5%
2095 20.2% 12.5%
2094 20.3% 12.6%
2093 20.4% 12.7%
2092 20.6% 12.7%
2091 20.7% 12.8%
2090 20.9% 12.8%
2089 21.1% 12.9%
2088 21.2% 12.9%
2087 21.4% 12.9%
2086 21.6% 12.9%
2085 21.8% 12.9%
2084 22% 12.8%
2083 22.2% 12.8%
2082 22.4% 12.7%
2081 22.6% 12.7%
2080 22.9% 12.6%
2079 23.1% 12.5%
2078 23.3% 12.5%
2077 23.5% 12.4%
2076 23.7% 12.4%
2075 24% 12.3%
2074 24.2% 12.3%
2073 24.4% 12.3%
2072 24.6% 12.3%
2071 24.8% 12.3%
2070 25% 12.3%
2069 25.2% 12.4%
2068 25.4% 12.4%
2067 25.6% 12.5%
2066 25.9% 12.6%
2065 26.1% 12.6%
2064 26.3% 12.7%
2063 26.5% 12.8%
2062 26.8% 12.9%
2061 27% 13%
2060 27.3% 13.1%
2059 27.5% 13.2%
2058 27.8% 13.2%
2057 28.1% 13.3%
2056 28.4% 13.3%
2055 28.7% 13.3%
2054 29% 13.3%
2053 29.4% 13.2%
2052 29.7% 13.2%
2051 30.1% 13.1%
2050 30.4% 13.1%
2049 30.8% 13%
2048 31.1% 12.9%
2047 31.5% 12.9%
2046 31.8% 12.8%
2045 32.1% 12.7%
2044 32.5% 12.7%
2043 32.8% 12.7%
2042 33.1% 12.7%
2041 33.4% 12.7%
2040 33.6% 12.8%
2039 33.9% 12.8%
2038 34.1% 12.9%
2037 34.4% 13.1%
2036 34.6% 13.3%
2035 34.7% 13.5%
2034 34.9% 13.7%
2033 35.1% 14%
2032 35.3% 14.2%
2031 35.5% 14.5%
2030 35.8% 14.7%
2029 36.1% 14.9%
2028 36.6% 15.1%
2027 37% 15.2%
2026 37.3% 15.5%
2025 37.6% 15.7%
2024 37.8% 15.8%
2023 38.3% 15.9%
2022 38.8% 16%
2021 39.4% 15.9%
2020 39.9% 15.9%
2019 40.5% 15.8%
2018 40.9% 15.7%
2017 41.4% 15.5%
2016 41.7% 15.4%
2015 41.9% 15.3%
2014 42% 15.3%
2013 42% 15.3%
2012 42% 15.4%
2011 42% 15.4%
2010 42.1% 15.5%
2009 42.1% 15.5%
2008 42.1% 15.7%
2007 42% 16%
2006 42% 16.4%
2005 42% 16.9%
2004 42.1% 17.3%
2003 42.2% 17.9%
2002 42.3% 18.4%
2001 42.5% 19%
2000 42.8% 19.7%
1999 43.4% 20.3%
1998 43.9% 20.9%
1997 44.3% 21.5%
1996 44.7% 22.1%
1995 44.9% 22.7%
1994 45.1% 23.3%
1993 45.2% 23.9%
1992 45.2% 24.4%
1991 45.1% 24.8%
1990 45.1% 25.2%
1989 45% 25.7%
1988 45% 26.1%
1987 44.9% 26.3%
1986 44.7% 26.4%
1985 44.5% 26.5%
1984 44.4% 26.4%
1983 44.5% 26.3%
1982 44.5% 26.2%
1981 44.7% 26.1%
1980 44.9% 26.1%
1979 45.1% 26.1%
1978 45.2% 26.1%
1977 45.3% 26%
1976 45.4% 26%
1975 45.5% 26%
1974 45.6% 26.1%
1973 45.7% 26.2%
1972 45.9% 26.6%
1971 46.1% 27%
1970 46.2% 27.5%
1969 45.8% 28.1%
1968 44.9% 28.6%
1967 44% 29.3%
1966 42.9% 29.9%
1965 41.6% 30.4%
1964 40.2% 30.8%
1963 38.5% 31%
1962 36.6% 31.3%
1961 34.3% 31.5%
1960 32.9% 31.5%

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/sao-tome-and-principe/slovakia | CC BY

Children aged 0-14 make up 37.8% of the population in Sao Tome and Principe and 15.8% in Slovakia in 2024, compared to 45.1% and 25.2% respectively in 1990.

Demographics of Sao Tome and Principe and Slovakia 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/slovakia | CC BY

Maternal mortality chart: Sao Tome and Principe vs Slovakia

Sao Tome and Principe
Slovakia
1x
Year Maternal mortality per 100K births
Sao Tome Slovakia
2023 75 4
2022 82 5
2021 98 12
2020 92 4
2019 95 5
2018 100 5
2017 110 5
2016 119 5
2015 128 5
2014 138 5
2013 150 5
2012 158 5
2011 164 5
2010 170 5
2009 172 6
2008 174 5
2007 174 6
2006 177 6
2005 181 7
2004 177 7
2003 178 7
2002 179 7
2001 178 8
2000 180 8
1999 179 9
1998 175 10
1997 173 10
1996 171 10
1995 172 11
1994 168 12
1993 166 14
1992 164 15
1991 166 17
1990 164 18
1989 167 17
1988 157 18
1987 161 19
1986 175 19
1985 159 19

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

GeoRank.org/birth-rate/sao-tome-and-principe/slovakia | 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 4 deaths in Slovakia.

Under-five mortality rates

Sao Tome and Principe
Slovakia

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Sao Tome Slovakia
2023 1.39% 0.61%
2022 1.46% 0.6%
2021 1.53% 0.6%
2020 1.6% 0.59%
2019 1.7% 0.59%
2018 1.81% 0.6%
2017 1.95% 0.6%
2016 2.11% 0.61%
2015 2.31% 0.62%
2014 2.54% 0.63%
2013 2.77% 0.64%
2012 3.04% 0.66%
2011 3.33% 0.67%
2010 3.63% 0.69%
2009 3.95% 0.71%
2008 4.3% 0.74%
2007 4.68% 0.77%
2006 5.11% 0.8%
2005 5.56% 0.83%
2004 6.05% 0.86%
2003 6.57% 0.88%
2002 7.1% 0.91%
2001 7.66% 0.93%
2000 8.21% 0.96%
1999 8.76% 1%
1998 9.26% 1.05%
1997 9.73% 1.09%
1996 10.1% 1.14%
1995 10.4% 1.2%
1994 10.7% 1.25%
1993 10.8% 1.31%
1992 10.9% 1.37%
1991 10.9% 1.42%
1990 10.8% 1.47%
1989 10.7% 1.53%
1988 10.6% 1.59%
1987 10.4% 1.65%
1986 11.4% 1.73%
1985 9.99% 1.82%
1984 9.77% 1.91%
1983 9.56% 1.99%
1982 9.37% 2.08%
1981 9.21% 2.17%
1980 9.1% 2.27%
1979 9.02% 2.36%
1978 8.96% 2.46%
1977 8.93% 2.55%
1976 8.89% 2.64%
1975 8.85% 2.72%
1974 8.79% 2.78%
1973 8.73% 2.84%
1972 8.67% 2.89%
1971 8.63% 2.92%
1970 8.64% 2.95%
1969 8.71% 2.97%
1968 8.85% 3%
1967 9.04% 3.02%
1966 9.29% 3.05%
1965 9.56% 3.08%
1964 - 3.14%
1963 - 3.21%
1962 - 3.32%
1961 - 3.47%
1960 - 3.67%

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

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

The chance that a newborn baby will die before reaching age five is 1.39% in Sao Tome and Principe and 0.61% in Slovakia. 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. United Nations Economic Commission for Europe (UNECE) (2023, retrieved 2026-03-10)
  4. Central Intelligence Agency (CIA) (2025, retrieved 2026-02-20)

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