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Fertility & birth rates in Brunei and Guinea

Updated on by Georank team

Brunei has an annual birth rate of 13.6 births per 1,000 people, compared to 33.8 for Guinea. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 1.75 in Brunei and 4.22 in Guinea — 141.4% difference.

1960 vs 2023, the fertility rate has decreased by 76.1% in Brunei and by 31% in Guinea — in 1960, it was 7.32 and 6.11, respectively.

  • Brunei is ranked 105/196 by birth rate compared to 15/196 for Guinea.
  • The mean age at childbearing (for all the births, not just the first) is 30.8 in Brunei — it's 28.1 in Guinea.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 8.52 in Brunei vs 118.6 in Guinea.
  • In Brunei, 25.7% of the population is composed of women of reproductive age (15-49), compared to 24.5% in Guinea.

Fertility rate in Brunei vs Guinea by year

Brunei
Guinea
1x
Year Fertility rate
Brunei Guinea
2023 1.75 4.22
2022 1.76 4.3
2021 1.78 4.4
2020 1.8 4.49
2019 1.82 4.58
2018 1.85 4.67
2017 1.88 4.79
2016 1.92 4.92
2015 1.95 5
2014 1.97 5.07
2013 1.98 5.15
2012 1.97 5.23
2011 1.96 5.34
2010 1.94 5.44
2009 1.92 5.53
2008 1.92 5.6
2007 1.93 5.66
2006 1.97 5.7
2005 2.02 5.73
2004 2.1 5.73
2003 2.19 5.74
2002 2.26 5.78
2001 2.34 5.83
2000 2.4 5.92
1999 2.46 5.99
1998 2.53 6.05
1997 2.6 6.12
1996 2.68 6.21
1995 2.79 6.29
1994 2.9 6.36
1993 3.01 6.41
1992 3.11 6.45
1991 3.21 6.48
1990 3.29 6.52
1989 3.36 6.55
1988 3.44 6.56
1987 3.49 6.57
1986 3.55 6.55
1985 3.61 6.53
1984 3.68 6.51
1983 3.75 6.49
1982 3.84 6.49
1981 3.94 6.46
1980 4.07 6.46
1979 4.22 6.45
1978 4.39 6.44
1977 4.58 6.43
1976 4.78 6.4
1975 4.99 6.37
1974 5.18 6.34
1973 5.36 6.31
1972 5.5 6.28
1971 5.62 6.26
1970 5.8 6.24
1969 6.01 6.23
1968 6.2 6.21
1967 6.37 6.2
1966 6.51 6.19
1965 6.65 6.18
1964 6.77 6.17
1963 6.89 6.15
1962 7.03 6.14
1961 7.19 6.13
1960 7.32 6.11

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

GeoRank.org/birth-rate/brunei/guinea | CC BY

According to the latest available data on birth rates, the fertility rate in Brunei was 1.75 children per woman in 2023, compared to 4.22 in Guinea in 2023. The replacement level is considered to be 2.1 children per woman.

Check Brunei vs Guinea population clock for a dynamic visualization of the changing population.

Natural population change by year

Brunei
Guinea
1x
Year Natural population change
Brunei Guinea
2023 3,837 356,147
2022 3,319 352,517
2021 3,985 345,121
2020 4,188 342,289
2019 4,335 338,984
2018 4,502 332,585
2017 4,685 328,542
2016 4,876 324,608
2015 5,060 316,604
2014 5,206 309,539
2013 5,302 304,430
2012 5,349 298,094
2011 5,242 293,318
2010 5,003 288,512
2009 4,789 281,920
2008 4,624 274,327
2007 4,521 266,070
2006 4,590 258,518
2005 4,703 251,209
2004 4,874 242,075
2003 5,034 234,774
2002 5,169 229,022
2001 5,275 227,642
2000 5,331 227,081
1999 5,388 223,968
1998 5,466 219,385
1997 5,518 220,373
1996 5,606 214,896
1995 5,750 205,644
1994 5,907 201,439
1993 6,045 195,612
1992 6,169 189,682
1991 6,259 181,299
1990 6,265 169,926
1989 6,202 164,707
1988 6,135 159,566
1987 6,017 154,178
1986 5,826 148,137
1985 5,620 142,313
1984 5,373 136,640
1983 5,138 130,629
1982 4,931 126,831
1981 4,839 121,223
1980 4,775 117,186
1979 4,717 113,141
1978 4,668 109,415
1977 4,594 105,990
1976 4,518 102,449
1975 4,431 99,267
1974 4,334 96,315
1973 4,216 93,764
1972 4,085 91,147
1971 3,880 88,358
1970 3,694 85,418
1969 3,618 82,799
1968 3,551 79,892
1967 3,477 77,251
1966 3,403 74,748
1965 3,326 72,134
1964 3,264 69,848
1963 3,195 67,690
1962 3,128 65,672
1961 3,175 63,766
1960 3,168 61,848

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

GeoRank.org/birth-rate/brunei/guinea | 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 +0.84% in Brunei and +2.47% in Guinea.

For the past 10 years, the annual natural population change has been +1.01% in Brunei and +2.6% in Guinea.

Birth rate in Brunei vs Guinea by year

Brunei
Guinea

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Brunei Guinea
2023 13.6 33.8
2022 13.8 34.4
2021 14.1 35
2020 14.3 35.5
2019 14.6 36
2018 14.9 36.3
2017 15.3 36.9
2016 15.8 37.4
2015 16.2 37.8
2014 16.6 38
2013 16.9 38.4
2012 17.1 38.7
2011 17 39.2
2010 16.6 39.6
2009 16.2 39.9
2008 16 40.1
2007 15.9 40.2
2006 16.3 40.3
2005 16.7 40.4
2004 17.4 40.2
2003 18 40.3
2002 18.7 40.6
2001 19.3 41.3
2000 19.8 41.8
1999 20.4 42.4
1998 21 42.8
1997 21.6 43.9
1996 22.4 44.2
1995 23.4 44.3
1994 24.5 45.1
1993 25.6 45.4
1992 26.7 45.9
1991 27.7 45.8
1990 28.5 45.5
1989 29 46
1988 29.5 46.2
1987 29.8 46.3
1986 29.9 46.2
1985 29.9 46.1
1984 29.7 46
1983 29.4 45.9
1982 29.3 45.9
1981 29.7 45.7
1980 30.3 45.8
1979 30.9 45.7
1978 31.6 45.7
1977 32.2 45.7
1976 32.8 45.6
1975 33.4 45.6
1974 34 45.6
1973 34.5 45.6
1972 34.9 45.6
1971 34.6 45.6
1970 34.3 45.5
1969 34.7 45.5
1968 35.6 45.5
1967 36.5 45.5
1966 37.5 45.5
1965 38.6 45.5
1964 39.7 45.5
1963 41 45.6
1962 42.8 45.6
1961 45 45.6
1960 47.2 45.6

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

GeoRank.org/birth-rate/brunei/guinea | CC BY

The latest reported birth rate per 1,000 people in 2023 was 13.6 in Brunei and 33.8 in Guinea, compared with 47.2 and 45.6, respectively, in 1960.

Birth rate data compared

Brunei Guinea
Fertility rate 1.75 4.22
Fertility rate rank 115/196 20/196
Birth rate 13.6 33.8
Birth rate rank 105/196 15/196
Population change due to births and deaths +3,837 +356,147
Natural population change rank 132/196 48/196
Natural population change rate +0.84% +2.47%
Population growth +0.82% +2.42%
Population growth rank 114/197 32/197
Age at first childbirth n/a 19.9 years
Average age at childbearing 30.8 years 28.1 years
Annual births per 1,000 women ages 15-19 7.18 114.3
Annual births per 1,000 women ages 20-29 73.5 188.4
Annual births per 1,000 women ages 30+ 26.8 58.4
Female of reproductive age (15-49), share of population 25.7% 24.5%
Any modern method of contraceptive prevalence among married women ages 15-49 n/a 10.6%
Share of births attended by skilled health staff 99.6% 55.3%
Maternal mortality per live birth 0.04% 0.49%
Neonatal mortality rate (before reaching 28 days of age) 0.49% 3.03%
Infant mortality rate (before reaching 1 year of age) 0.82% 6.15%
Mortality rate before reaching 5 years of age 0.94% 9.5%
Life expectancy 75.8 years 61.2 years

Children 0-14 years as share of population

Brunei
Factual

UN forecast
Guinea
Factual

UN forecast
1x
Year Young
Brunei Guinea
2100 13.8% 20.5%
2099 13.9% 20.6%
2098 13.9% 20.8%
2097 13.9% 20.9%
2096 14% 21%
2095 14% 21.2%
2094 14.1% 21.3%
2093 14.1% 21.4%
2092 14.1% 21.6%
2091 14.1% 21.7%
2090 14.2% 21.9%
2089 14.2% 22%
2088 14.2% 22.2%
2087 14.2% 22.3%
2086 14.2% 22.5%
2085 14.2% 22.6%
2084 14.2% 22.8%
2083 14.2% 22.9%
2082 14.2% 23.1%
2081 14.2% 23.3%
2080 14.2% 23.4%
2079 14.2% 23.6%
2078 14.2% 23.8%
2077 14.2% 24%
2076 14.2% 24.1%
2075 14.2% 24.3%
2074 14.3% 24.5%
2073 14.3% 24.7%
2072 14.3% 25%
2071 14.4% 25.2%
2070 14.4% 25.4%
2069 14.5% 25.6%
2068 14.6% 25.9%
2067 14.6% 26.1%
2066 14.7% 26.4%
2065 14.8% 26.6%
2064 14.8% 26.9%
2063 14.9% 27.2%
2062 15% 27.5%
2061 15% 27.7%
2060 15.1% 28%
2059 15.2% 28.3%
2058 15.2% 28.6%
2057 15.3% 28.9%
2056 15.3% 29.2%
2055 15.4% 29.5%
2054 15.4% 29.8%
2053 15.4% 30.1%
2052 15.5% 30.4%
2051 15.5% 30.7%
2050 15.6% 31%
2049 15.6% 31.3%
2048 15.7% 31.7%
2047 15.8% 32%
2046 15.9% 32.4%
2045 16% 32.7%
2044 16.1% 33.1%
2043 16.2% 33.5%
2042 16.3% 33.9%
2041 16.5% 34.3%
2040 16.7% 34.7%
2039 16.9% 35.1%
2038 17.1% 35.5%
2037 17.4% 35.9%
2036 17.6% 36.4%
2035 17.9% 36.8%
2034 18.1% 37.3%
2033 18.4% 37.7%
2032 18.7% 38.1%
2031 19% 38.5%
2030 19.3% 38.9%
2029 19.6% 39.3%
2028 20% 39.7%
2027 20.3% 40%
2026 20.5% 40.4%
2025 20.7% 40.7%
2024 20.8% 40.9%
2023 21% 41.2%
2022 21.2% 41.6%
2021 21.3% 41.9%
2020 21.6% 42.1%
2019 21.9% 42.4%
2018 22.3% 42.6%
2017 22.7% 42.9%
2016 23.1% 43.1%
2015 23.6% 43.3%
2014 24% 43.5%
2013 24.5% 43.8%
2012 24.9% 44%
2011 25.2% 44.2%
2010 25.3% 44.5%
2009 25.4% 44.7%
2008 25.5% 44.9%
2007 25.5% 45.1%
2006 25.9% 45.3%
2005 26.7% 45.3%
2004 27.4% 45.3%
2003 28.1% 45.4%
2002 28.9% 45.5%
2001 29.6% 45.3%
2000 30.3% 44.9%
1999 31% 44.7%
1998 31.6% 44.5%
1997 32.2% 44.2%
1996 32.7% 43.9%
1995 33.3% 43.8%
1994 33.7% 43.7%
1993 34.1% 43.6%
1992 34.3% 43.5%
1991 34.4% 43.4%
1990 34.4% 43.3%
1989 34.6% 43.2%
1988 34.7% 43.1%
1987 34.9% 43.1%
1986 35.2% 43%
1985 35.7% 43%
1984 36.3% 42.9%
1983 36.9% 42.8%
1982 37.6% 42.7%
1981 38.1% 42.6%
1980 38.5% 42.4%
1979 38.9% 42.2%
1978 39.3% 42%
1977 39.9% 41.8%
1976 40.6% 41.5%
1975 41.3% 41.3%
1974 42% 41.1%
1973 42.6% 40.9%
1972 43% 40.7%
1971 43.3% 40.5%
1970 43.6% 40.4%
1969 44.2% 40.3%
1968 44.8% 40.3%
1967 45.4% 40.2%
1966 46% 40.2%
1965 46.5% 40.1%
1964 46.6% 40%
1963 46.6% 39.9%
1962 46.1% 39.9%
1961 45.2% 39.7%
1960 44.1% 39.6%

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/brunei/guinea | CC BY

Children aged 0-14 make up 20.8% of the population in Brunei and 40.9% in Guinea in 2024, compared to 34.4% and 43.3% respectively in 1990.

Demographics of Brunei and Guinea compared.

Fertility rates around the globe

1x

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

GeoRank.org/birth-rate/brunei/guinea | CC BY

Maternal mortality chart: Brunei vs Guinea

Brunei
Guinea
1x
Year Maternal mortality per 100K births
Brunei Guinea
2023 36 494
2022 88 500
2021 44 533
2020 39 528
2019 38 548
2018 39 560
2017 39 582
2016 39 606
2015 39 642
2014 40 664
2013 40 682
2012 40 703
2011 40 728
2010 40 750
2009 40 766
2008 40 772
2007 41 802
2006 42 825
2005 43 843
2004 44 869
2003 45 892
2002 46 916
2001 46 946
2000 48 951
1999 50 960
1998 51 971
1997 52 994
1996 54 1,010
1995 55 1,042
1994 58 1,081
1993 59 1,094
1992 62 1,124
1991 65 1,143
1990 68 1,162
1989 71 1,188
1988 73 1,202
1987 75 1,218
1986 78 1,234
1985 79 1,248

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

GeoRank.org/birth-rate/brunei/guinea | CC BY

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 36 deaths per 100,000 live births in Brunei, compared to 494 deaths in Guinea.

Under-five mortality rates

Brunei
Guinea

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Brunei Guinea
2023 0.94% 9.5%
2022 0.95% 9.78%
2021 0.96% 10.1%
2020 0.97% 10.3%
2019 0.98% 10.6%
2018 0.99% 10.8%
2017 1% 11%
2016 1% 11.2%
2015 1% 11.4%
2014 1% 11.6%
2013 0.99% 11.7%
2012 0.99% 11.8%
2011 0.98% 12%
2010 0.97% 12.2%
2009 0.96% 12.4%
2008 0.96% 12.7%
2007 0.95% 12.9%
2006 0.95% 13.3%
2005 0.95% 13.7%
2004 0.95% 14.1%
2003 0.96% 14.6%
2002 0.98% 15.2%
2001 1% 15.9%
2000 1.03% 16.5%
1999 1.07% 17.2%
1998 1.1% 17.9%
1997 1.15% 18.6%
1996 1.19% 19.3%
1995 1.23% 20%
1994 1.27% 20.7%
1993 1.3% 21.4%
1992 1.31% 22.1%
1991 1.32% 22.7%
1990 1.33% 23.3%
1989 1.35% 23.9%
1988 1.38% 24.4%
1987 1.42% 24.8%
1986 1.48% 25.3%
1985 1.57% 25.8%
1984 1.67% 26.2%
1983 1.79% 26.7%
1982 1.93% 27.2%
1981 2.09% 27.7%
1980 2.28% 28.2%
1979 2.48% 28.7%
1978 2.71% 29.2%
1977 2.95% 29.7%
1976 3.21% 30.1%
1975 3.49% 30.6%
1974 3.77% 30.9%
1973 4.06% 31.3%
1972 4.35% 31.6%
1971 4.64% 31.9%
1970 4.91% 32.2%
1969 5.16% 32.5%
1968 5.42% 32.8%
1967 5.69% 33.1%
1966 5.98% 33.4%
1965 6.32% 33.6%
1964 6.7% 33.9%
1963 7.15% 34.2%
1962 7.66% 34.4%
1961 8.24% 34.7%
1960 8.9% 35%

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

GeoRank.org/birth-rate/brunei/guinea | CC BY

The chance that a newborn baby will die before reaching age five is 0.94% in Brunei and 9.5% in Guinea. 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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