Brunei has an annual birth rate of 13.6 births per 1,000 people, compared to 13 for Iran. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 1.75 in Brunei and 1.7 in Iran — 2.98% difference.
1960 vs 2023, the fertility rate has decreased by -76.1% in Brunei and by -77.5% in Iran — in 1960, it was 7.32 and 7.52, respectively.
Birth rates facts compared:
- Brunei is ranked 105/196 by birth rate compared to 108/196 for Iran.
- The mean age at childbearing (for all the births, not just the first) is 30.7 in Brunei — it's 28.8 in Iran.
- Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 8.52 in Brunei vs 26.2 in Iran.
- In Brunei, 25.7% of the population is composed of women of reproductive age (15-49), compared to 26.8% in Iran.
- Excluding migration, the natural population change due to births and deaths from 2022 to 2023 was +0.84% in Brunei and +0.83% in Iran.
Birth rate data compared
Brunei
|
Iran
|
|
|---|---|---|
| Fertility rate | 1.75 | 1.7 |
| Birth rate | 13.6 | 13 |
| Birth rate rank | 105/196 | 108/196 |
| Average age at childbearing | 30.7 years | 28.8 years |
| Annual births per 1,000 women ages 15-19 | 7.48 | 25.3 |
| Annual births per 1,000 women ages 20-29 | 75.1 | 84.7 |
| Annual births per 1,000 women ages 30+ | 27.2 | 20.7 |
| Female of reproductive age (15-49), share of population | 25.7% | 26.8% |
| Any modern method of contraceptive prevalence among married women ages 15-49 | n/a | 57% |
| Share of births attended by skilled health staff | 99.6% | 99% |
| Maternal mortality per live birth | 0.04% | 0.02% |
| Neonatal mortality rate (before reaching 28 days of age) | 0.49% | 0.74% |
| Infant mortality rate (before reaching 1 year of age) | 0.82% | 1.07% |
| Mortality rate before reaching 5 years of age, per 1,000 live births | 0.94% | 1.18% |
| Population change due to births and deaths | +3,837 | +750,150 |
| Natural population change rank | 132/196 | 25/196 |
| Natural population change rate | +0.84% | +0.83% |
| Population growth | +0.82% | +1.06% |
| Population growth rank | 116/197 | 100/197 |
| Life expectancy | 75.7 years | 78.1 years |
Fertility rate in Brunei vs Iran chart
According to the latest available data on birth rates, the fertility rate in Brunei was 1.75 children per woman in 2023, compared to 1.7 in Iran in 2023. The replacement level is considered to be 2.1 children per woman.
Check Brunei vs Iran population clock for a dynamic visualization of the changing population.
The chart below showcases historical changes in the birth rates.
Brunei
Factual
UN forecast
Iran
Factual
UN forecast
Births per woman
| Year | Fertility rate | |
|---|---|---|
|
Brunei
|
Iran
|
|
| 1960 | 7.32 | 7.52 |
| 1961 | 7.19 | 7.46 |
| 1962 | 7.03 | 7.4 |
| 1963 | 6.89 | 7.32 |
| 1964 | 6.77 | 7.24 |
| 1965 | 6.65 | 7.22 |
| 1966 | 6.51 | 7.21 |
| 1967 | 6.37 | 7.19 |
| 1968 | 6.2 | 7.12 |
| 1969 | 6.01 | 7.01 |
| 1970 | 5.8 | 6.8 |
| 1971 | 5.62 | 6.55 |
| 1972 | 5.5 | 6.26 |
| 1973 | 5.36 | 6.06 |
| 1974 | 5.18 | 5.97 |
| 1975 | 4.99 | 5.95 |
| 1976 | 4.78 | 6.07 |
| 1977 | 4.58 | 6.18 |
| 1978 | 4.39 | 6.34 |
| 1979 | 4.22 | 6.55 |
| 1980 | 4.07 | 6.63 |
| 1981 | 3.94 | 6.62 |
| 1982 | 3.84 | 6.59 |
| 1983 | 3.75 | 6.53 |
| 1984 | 3.68 | 6.43 |
| 1985 | 3.61 | 6.24 |
| 1986 | 3.55 | 6.01 |
| 1987 | 3.49 | 5.72 |
| 1988 | 3.44 | 5.43 |
| 1989 | 3.36 | 5.17 |
| 1990 | 3.29 | 4.93 |
| 1991 | 3.21 | 4.57 |
| 1992 | 3.11 | 4.1 |
| 1993 | 3.01 | 3.67 |
| 1994 | 2.9 | 3.24 |
| 1995 | 2.79 | 2.85 |
| 1996 | 2.68 | 2.54 |
| 1997 | 2.6 | 2.32 |
| 1998 | 2.53 | 2.19 |
| 1999 | 2.46 | 2.09 |
| 2000 | 2.4 | 2 |
| 2001 | 2.34 | 1.92 |
| 2002 | 2.26 | 1.84 |
| 2003 | 2.19 | 1.8 |
| 2004 | 2.1 | 1.78 |
| 2005 | 2.02 | 1.76 |
| 2006 | 1.97 | 1.76 |
| 2007 | 1.93 | 1.75 |
| 2008 | 1.92 | 1.74 |
| 2009 | 1.92 | 1.74 |
| 2010 | 1.94 | 1.75 |
| 2011 | 1.96 | 1.79 |
| 2012 | 1.97 | 1.85 |
| 2013 | 1.98 | 1.91 |
| 2014 | 1.97 | 1.98 |
| 2015 | 1.95 | 2.02 |
| 2016 | 1.92 | 2.05 |
| 2017 | 1.88 | 2.02 |
| 2018 | 1.85 | 1.92 |
| 2019 | 1.82 | 1.77 |
| 2020 | 1.8 | 1.7 |
| 2021 | 1.78 | 1.71 |
| 2022 | 1.76 | 1.7 |
| 2023 | 1.75 | 1.7 |
| 2024 | 1.73 | 1.68 |
| 2025 | 1.71 | 1.67 |
| 2026 | 1.7 | 1.66 |
| 2027 | 1.68 | 1.65 |
| 2028 | 1.68 | 1.64 |
| 2029 | 1.67 | 1.64 |
| 2030 | 1.66 | 1.63 |
| 2031 | 1.65 | 1.63 |
| 2032 | 1.65 | 1.63 |
| 2033 | 1.65 | 1.63 |
| 2034 | 1.64 | 1.63 |
| 2035 | 1.64 | 1.63 |
| 2036 | 1.64 | 1.63 |
| 2037 | 1.64 | 1.63 |
| 2038 | 1.64 | 1.63 |
| 2039 | 1.63 | 1.63 |
| 2040 | 1.63 | 1.63 |
| 2041 | 1.63 | 1.63 |
| 2042 | 1.63 | 1.63 |
| 2043 | 1.62 | 1.63 |
| 2044 | 1.62 | 1.63 |
| 2045 | 1.62 | 1.63 |
| 2046 | 1.62 | 1.63 |
| 2047 | 1.62 | 1.63 |
| 2048 | 1.62 | 1.63 |
| 2049 | 1.62 | 1.63 |
| 2050 | 1.61 | 1.63 |
Children 0-14 years as share of population
Brunei
Factual
UN forecast
Iran
Factual
UN forecast
| Year | Share of people 0-14 years old | |
|---|---|---|
|
Brunei
|
Iran
|
|
| 1960 | 44.1% | 43.5% |
| 1961 | 45.2% | 44.1% |
| 1962 | 46.1% | 44.6% |
| 1963 | 46.6% | 44.9% |
| 1964 | 46.6% | 45% |
| 1965 | 46.5% | 45% |
| 1966 | 46% | 44.9% |
| 1967 | 45.4% | 44.8% |
| 1968 | 44.8% | 44.8% |
| 1969 | 44.2% | 44.7% |
| 1970 | 43.6% | 44.6% |
| 1971 | 43.3% | 44.4% |
| 1972 | 43% | 44.2% |
| 1973 | 42.6% | 43.8% |
| 1974 | 42% | 43.5% |
| 1975 | 41.3% | 43.2% |
| 1976 | 40.6% | 43% |
| 1977 | 39.9% | 42.9% |
| 1978 | 39.3% | 43% |
| 1979 | 38.9% | 43.1% |
| 1980 | 38.5% | 43.3% |
| 1981 | 38.1% | 42.9% |
| 1982 | 37.6% | 42.7% |
| 1983 | 36.9% | 43% |
| 1984 | 36.3% | 43.3% |
| 1985 | 35.7% | 43.5% |
| 1986 | 35.2% | 43.7% |
| 1987 | 34.9% | 43.9% |
| 1988 | 34.7% | 44% |
| 1989 | 34.6% | 44.2% |
| 1990 | 34.4% | 44.1% |
| 1991 | 34.4% | 43.9% |
| 1992 | 34.3% | 43.6% |
| 1993 | 34.1% | 43.6% |
| 1994 | 33.7% | 43.2% |
| 1995 | 33.3% | 42.1% |
| 1996 | 32.7% | 40.7% |
| 1997 | 32.2% | 39.1% |
| 1998 | 31.6% | 37.3% |
| 1999 | 31% | 35.4% |
| 2000 | 30.3% | 33.6% |
| 2001 | 29.6% | 31.7% |
| 2002 | 28.9% | 30.1% |
| 2003 | 28.1% | 28.7% |
| 2004 | 27.4% | 27.4% |
| 2005 | 26.7% | 26.2% |
| 2006 | 25.9% | 25.3% |
| 2007 | 25.5% | 24.6% |
| 2008 | 25.5% | 24% |
| 2009 | 25.4% | 23.7% |
| 2010 | 25.3% | 23.4% |
| 2011 | 25.2% | 23.3% |
| 2012 | 24.9% | 23.3% |
| 2013 | 24.5% | 23.3% |
| 2014 | 24% | 23.4% |
| 2015 | 23.6% | 23.6% |
| 2016 | 23.1% | 23.8% |
| 2017 | 22.7% | 23.9% |
| 2018 | 22.3% | 24% |
| 2019 | 21.9% | 23.9% |
| 2020 | 21.6% | 23.8% |
| 2021 | 21.3% | 23.6% |
| 2022 | 21.2% | 23.2% |
| 2023 | 21% | 22.8% |
| 2024 | 20.8% | 22.4% |
| 2025 | 20.6% | 22% |
| 2026 | 20.4% | 21.6% |
| 2027 | 20.1% | 21.1% |
| 2028 | 19.8% | 20.5% |
| 2029 | 19.5% | 19.9% |
| 2030 | 19.1% | 19.3% |
| 2031 | 18.8% | 18.6% |
| 2032 | 18.5% | 18% |
| 2033 | 18.2% | 17.4% |
| 2034 | 18% | 17% |
| 2035 | 17.7% | 16.7% |
| 2036 | 17.5% | 16.4% |
| 2037 | 17.2% | 16.2% |
| 2038 | 17% | 15.9% |
| 2039 | 16.8% | 15.8% |
| 2040 | 16.6% | 15.6% |
| 2041 | 16.4% | 15.5% |
| 2042 | 16.3% | 15.4% |
| 2043 | 16.1% | 15.3% |
| 2044 | 16% | 15.3% |
| 2045 | 15.9% | 15.2% |
| 2046 | 15.8% | 15.2% |
| 2047 | 15.7% | 15.2% |
| 2048 | 15.7% | 15.2% |
| 2049 | 15.6% | 15.1% |
| 2050 | 15.6% | 15.1% |
Children aged 0-14 make up 20.8% of the population in Brunei and 22.4% in Iran in 2024, compared to 34.4% and 44.1% respectively in 1990.
Natural population change in Brunei vs Iran by year
For the past 10 years, the annual natural population change (excluding migration) has been +1.01% in Brunei and +1.1% in Iran. The chart below illustrates the comparison of the absolute yearly changes resulting from births and deaths.
Brunei
Iran
Natural population change
| Year | Population change due to births and deaths | |
|---|---|---|
|
Brunei
|
Iran
|
|
| 1960 | 3,168 | 584,060 |
| 1961 | 3,175 | 594,674 |
| 1962 | 3,128 | 595,538 |
| 1963 | 3,195 | 620,126 |
| 1964 | 3,264 | 635,589 |
| 1965 | 3,326 | 663,029 |
| 1966 | 3,403 | 695,040 |
| 1967 | 3,477 | 727,276 |
| 1968 | 3,551 | 743,992 |
| 1969 | 3,618 | 780,660 |
| 1970 | 3,694 | 794,612 |
| 1971 | 3,880 | 805,830 |
| 1972 | 4,085 | 804,043 |
| 1973 | 4,216 | 831,880 |
| 1974 | 4,334 | 873,369 |
| 1975 | 4,431 | 929,481 |
| 1976 | 4,518 | 1,013,347 |
| 1977 | 4,594 | 1,091,542 |
| 1978 | 4,668 | 1,156,974 |
| 1979 | 4,717 | 1,294,306 |
| 1980 | 4,775 | 1,361,293 |
| 1981 | 4,839 | 1,376,830 |
| 1982 | 4,931 | 1,514,240 |
| 1983 | 5,138 | 1,573,612 |
| 1984 | 5,373 | 1,653,051 |
| 1985 | 5,620 | 1,661,750 |
| 1986 | 5,826 | 1,659,289 |
| 1987 | 6,017 | 1,639,644 |
| 1988 | 6,135 | 1,614,512 |
| 1989 | 6,202 | 1,609,739 |
| 1990 | 6,265 | 1,530,434 |
| 1991 | 6,259 | 1,495,594 |
| 1992 | 6,169 | 1,365,466 |
| 1993 | 6,045 | 1,219,658 |
| 1994 | 5,907 | 1,008,076 |
| 1995 | 5,750 | 879,648 |
| 1996 | 5,606 | 784,508 |
| 1997 | 5,518 | 726,574 |
| 1998 | 5,466 | 717,655 |
| 1999 | 5,388 | 723,237 |
| 2000 | 5,331 | 731,203 |
| 2001 | 5,275 | 743,658 |
| 2002 | 5,169 | 752,205 |
| 2003 | 5,034 | 732,600 |
| 2004 | 4,874 | 801,203 |
| 2005 | 4,703 | 837,305 |
| 2006 | 4,590 | 884,529 |
| 2007 | 4,521 | 919,254 |
| 2008 | 4,624 | 940,983 |
| 2009 | 4,789 | 958,322 |
| 2010 | 5,003 | 980,380 |
| 2011 | 5,242 | 1,023,925 |
| 2012 | 5,349 | 1,073,804 |
| 2013 | 5,302 | 1,119,533 |
| 2014 | 5,206 | 1,158,552 |
| 2015 | 5,060 | 1,178,317 |
| 2016 | 4,876 | 1,186,949 |
| 2017 | 4,685 | 1,140,549 |
| 2018 | 4,502 | 1,035,052 |
| 2019 | 4,335 | 893,063 |
| 2020 | 4,188 | 663,978 |
| 2021 | 3,985 | 645,725 |
| 2022 | 3,319 | 753,525 |
| 2023 | 3,837 | 750,150 |
Fertility rates around the globe
Fertility rate
Maternal mortality chart: Brunei vs Iran
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 16 deaths in Iran.
Brunei
Iran
| Year | Maternal mortality per 100K births | |
|---|---|---|
|
Brunei
|
Iran
|
|
| 1985 | 79 | 160 |
| 1986 | 78 | 148 |
| 1987 | 75 | 136 |
| 1988 | 73 | 126 |
| 1989 | 71 | 113 |
| 1990 | 68 | 107 |
| 1991 | 65 | 94 |
| 1992 | 62 | 86 |
| 1993 | 59 | 80 |
| 1994 | 58 | 71 |
| 1995 | 55 | 65 |
| 1996 | 54 | 59 |
| 1997 | 52 | 55 |
| 1998 | 51 | 50 |
| 1999 | 50 | 46 |
| 2000 | 48 | 43 |
| 2001 | 46 | 40 |
| 2002 | 46 | 38 |
| 2003 | 45 | 37 |
| 2004 | 44 | 34 |
| 2005 | 43 | 33 |
| 2006 | 42 | 32 |
| 2007 | 41 | 31 |
| 2008 | 40 | 30 |
| 2009 | 40 | 28 |
| 2010 | 40 | 27 |
| 2011 | 40 | 26 |
| 2012 | 40 | 25 |
| 2013 | 40 | 24 |
| 2014 | 40 | 23 |
| 2015 | 39 | 22 |
| 2016 | 39 | 21 |
| 2017 | 39 | 20 |
| 2018 | 39 | 19 |
| 2019 | 38 | 18 |
| 2020 | 39 | 34 |
| 2021 | 44 | 51 |
| 2022 | 88 | 21 |
| 2023 | 36 | 16 |
Under-five mortality rates
The chance that a newborn baby will die before reaching age five is 0.94% in Brunei and 1.18% in Iran. Below is the historical data on under-five mortality rates.
Brunei
Iran
Probability that a newborn baby will die before reaching age five
| Year | Mortality rate before reaching 5 years of age, per 1,000 live births | |
|---|---|---|
|
Brunei
|
Iran
|
|
| 1960 | 8.9% | - |
| 1961 | 8.24% | - |
| 1962 | 7.66% | - |
| 1963 | 7.15% | - |
| 1964 | 6.7% | - |
| 1965 | 6.32% | - |
| 1966 | 5.98% | - |
| 1967 | 5.69% | - |
| 1968 | 5.42% | - |
| 1969 | 5.16% | - |
| 1970 | 4.91% | - |
| 1971 | 4.64% | 18.9% |
| 1972 | 4.35% | 18% |
| 1973 | 4.06% | 17.1% |
| 1974 | 3.77% | 16.2% |
| 1975 | 3.49% | 15.3% |
| 1976 | 3.21% | 14.4% |
| 1977 | 2.95% | 13.5% |
| 1978 | 2.71% | 12.6% |
| 1979 | 2.48% | 11.7% |
| 1980 | 2.28% | 10.8% |
| 1981 | 2.09% | 10% |
| 1982 | 1.93% | 9.3% |
| 1983 | 1.79% | 8.67% |
| 1984 | 1.67% | 8.13% |
| 1985 | 1.57% | 7.64% |
| 1986 | 1.48% | 7.2% |
| 1987 | 1.42% | 6.8% |
| 1988 | 1.38% | 6.42% |
| 1989 | 1.35% | 6.07% |
| 1990 | 1.33% | 5.76% |
| 1991 | 1.32% | 5.48% |
| 1992 | 1.31% | 5.22% |
| 1993 | 1.3% | 5% |
| 1994 | 1.27% | 4.79% |
| 1995 | 1.23% | 4.59% |
| 1996 | 1.19% | 4.4% |
| 1997 | 1.15% | 4.21% |
| 1998 | 1.1% | 4.02% |
| 1999 | 1.07% | 3.83% |
| 2000 | 1.03% | 3.63% |
| 2001 | 1% | 3.42% |
| 2002 | 0.98% | 3.22% |
| 2003 | 0.96% | 3.02% |
| 2004 | 0.95% | 2.83% |
| 2005 | 0.95% | 2.65% |
| 2006 | 0.95% | 2.48% |
| 2007 | 0.95% | 2.32% |
| 2008 | 0.96% | 2.17% |
| 2009 | 0.96% | 2.04% |
| 2010 | 0.97% | 1.93% |
| 2011 | 0.98% | 1.84% |
| 2012 | 0.99% | 1.75% |
| 2013 | 0.99% | 1.68% |
| 2014 | 1% | 1.61% |
| 2015 | 1% | 1.55% |
| 2016 | 1% | 1.5% |
| 2017 | 1% | 1.45% |
| 2018 | 0.99% | 1.39% |
| 2019 | 0.98% | 1.35% |
| 2020 | 0.97% | 1.3% |
| 2021 | 0.96% | 1.26% |
| 2022 | 0.95% | 1.22% |
| 2023 | 0.94% | 1.18% |
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