Skip to content

Fertility & birth rates in Iran and Kiribati

Updated on by Georank team

Iran has an annual birth rate of 13 births per 1,000 people, compared to 25.8 for Kiribati. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 1.7 in Iran and 3.15 in Kiribati — 85.7% difference.

1960 vs 2023, the fertility rate has decreased by 77.5% in Iran and by 51.1% in Kiribati — in 1960, it was 7.52 and 6.44, respectively.

  • Iran is ranked 108/196 by birth rate compared to 50/196 for Kiribati.
  • The mean age at childbearing (for all the births, not just the first) is 28.9 in Iran — it's 29 in Kiribati.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 26.2 in Iran vs 44 in Kiribati.
  • In Iran, 26.8% of the population is composed of women of reproductive age (15-49), compared to 26% in Kiribati.

Fertility rate in Iran vs Kiribati by year

Iran
Kiribati
1x
Year Fertility rate
Iran Kiribati
2023 1.7 3.15
2022 1.7 3.18
2021 1.71 3.22
2020 1.7 3.25
2019 1.77 3.29
2018 1.92 3.32
2017 2.02 3.34
2016 2.05 3.38
2015 2.02 3.44
2014 1.98 3.52
2013 1.91 3.64
2012 1.85 3.77
2011 1.79 3.88
2010 1.75 3.9
2009 1.74 3.91
2008 1.74 3.9
2007 1.75 3.87
2006 1.76 3.82
2005 1.76 3.76
2004 1.78 3.73
2003 1.8 3.7
2002 1.84 3.81
2001 1.92 3.96
2000 2 4.07
1999 2.09 4.18
1998 2.19 4.29
1997 2.32 4.37
1996 2.54 4.43
1995 2.85 4.42
1994 3.24 4.44
1993 3.67 4.49
1992 4.1 4.57
1991 4.57 4.64
1990 4.93 4.67
1989 5.17 4.69
1988 5.43 4.73
1987 5.72 4.81
1986 6.01 4.87
1985 6.24 4.91
1984 6.43 4.91
1983 6.53 4.91
1982 6.59 4.95
1981 6.62 4.96
1980 6.63 4.96
1979 6.55 4.97
1978 6.34 4.97
1977 6.18 4.96
1976 6.07 4.96
1975 5.95 5.02
1974 5.97 5.09
1973 6.06 5.2
1972 6.26 5.37
1971 6.55 5.55
1970 6.8 5.71
1969 7.01 5.85
1968 7.12 5.98
1967 7.19 6.11
1966 7.21 6.23
1965 7.22 6.26
1964 7.24 6.29
1963 7.32 6.35
1962 7.4 6.42
1961 7.46 6.48
1960 7.52 6.44

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

GeoRank.org/birth-rate/iran/kiribati | CC BY

According to the latest available data on birth rates, the fertility rate in Iran was 1.7 children per woman in 2023, compared to 3.15 in Kiribati in 2023. The replacement level is considered to be 2.1 children per woman.

Check Iran vs Kiribati population clock for a dynamic visualization of the changing population.

Natural population change by year

Iran
Kiribati
1x
Year Natural population change
Iran Kiribati
2023 750,150 2,487
2022 753,525 2,522
2021 645,725 2,408
2020 663,978 2,497
2019 893,063 2,560
2018 1,035,052 2,561
2017 1,140,549 2,549
2016 1,186,949 2,546
2015 1,178,317 2,555
2014 1,158,552 2,577
2013 1,119,533 2,629
2012 1,073,804 2,678
2011 1,023,925 2,709
2010 980,380 2,644
2009 958,322 2,573
2008 940,983 2,493
2007 919,254 2,393
2006 884,529 2,285
2005 837,305 2,188
2004 801,203 2,118
2003 732,600 2,045
2002 752,205 2,074
2001 743,658 2,121
2000 731,203 2,153
1999 723,237 2,186
1998 717,655 2,210
1997 726,574 2,220
1996 784,508 2,217
1995 879,648 2,183
1994 1,008,076 2,168
1993 1,219,658 2,161
1992 1,365,466 2,173
1991 1,495,594 2,176
1990 1,530,434 2,127
1989 1,609,739 2,073
1988 1,614,512 2,022
1987 1,639,644 1,982
1986 1,659,289 1,933
1985 1,661,750 1,881
1984 1,653,051 1,813
1983 1,573,612 1,748
1982 1,514,240 1,697
1981 1,376,830 1,635
1980 1,361,293 1,571
1979 1,294,306 1,509
1978 1,156,974 1,480
1977 1,091,542 1,426
1976 1,013,347 1,425
1975 929,481 1,423
1974 873,369 1,430
1973 831,880 1,409
1972 804,043 1,406
1971 805,830 1,406
1970 794,612 1,388
1969 780,660 1,367
1968 743,992 1,393
1967 727,276 1,417
1966 695,040 1,437
1965 663,029 1,376
1964 635,589 1,318
1963 620,126 1,273
1962 595,538 1,233
1961 594,674 1,199
1960 584,060 1,141

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

GeoRank.org/birth-rate/iran/kiribati | 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 +0.83% in Iran and +1.88% in Kiribati.

For the past 10 years, the annual natural population change has been +1.1% in Iran and +2.05% in Kiribati.

Birth rate in Iran vs Kiribati by year

Iran
Kiribati

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Iran Kiribati
2023 13 25.8
2022 13.3 26.4
2021 13.7 26.9
2020 14 27.4
2019 14.9 27.8
2018 16.7 28.1
2017 18 28.3
2016 18.8 28.5
2015 18.9 28.9
2014 18.8 29.3
2013 18.5 30
2012 18.1 30.8
2011 17.7 31.4
2010 17.3 31.2
2009 17.2 31.1
2008 17.1 30.8
2007 17 30.3
2006 16.7 29.7
2005 16.4 29.2
2004 16.2 28.9
2003 15.9 28.6
2002 15.9 29.4
2001 15.9 30.5
2000 16 31.5
1999 16.1 32.5
1998 16.2 33.4
1997 16.6 34.1
1996 17.7 34.8
1995 19.5 35
1994 22 35.4
1993 25.7 35.9
1992 28.3 36.8
1991 31.2 37.6
1990 33.5 37.7
1989 35.2 37.9
1988 37 38.2
1987 38.8 38.6
1986 40.7 38.8
1985 42.4 38.9
1984 43.9 38.6
1983 44.7 38.1
1982 45.2 37.9
1981 44.2 37.4
1980 45.1 36.8
1979 44.7 36.2
1978 43.4 36.2
1977 42.2 35.7
1976 41.4 35.4
1975 40.3 35.4
1974 40 35.7
1973 40.1 35.7
1972 40.9 36.5
1971 42.4 37.4
1970 43.6 38.1
1969 44.7 38.7
1968 45.3 40.1
1967 45.8 41.2
1966 46 42.2
1965 46.3 42
1964 46.7 42.2
1963 47.7 42.6
1962 48.8 43.1
1961 49.8 43.6
1960 51 43.5

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

GeoRank.org/birth-rate/iran/kiribati | CC BY

The latest reported birth rate per 1,000 people in 2023 was 13 in Iran and 25.8 in Kiribati, compared with 51 and 43.5, respectively, in 1960.

Birth rate data compared

Iran Kiribati
Fertility rate 1.7 3.15
Fertility rate rank 121/196 53/196
Birth rate 13 25.8
Birth rate rank 108/196 50/196
Population change due to births and deaths +750,150 +2,487
Natural population change rank 25/196 135/196
Natural population change rate +0.83% +1.88%
Population growth +1.06% +1.5%
Population growth rank 98/197 72/197
Age at first childbirth n/a 23.1 years
Average age at childbearing 28.9 years 29 years
Annual births per 1,000 women ages 15-19 25 45.3
Annual births per 1,000 women ages 20-29 84 152.8
Annual births per 1,000 women ages 30+ 19.8 45.7
Female of reproductive age (15-49), share of population 26.8% 26%
Any modern method of contraceptive prevalence among married women ages 15-49 57% 27.3%
Share of births attended by skilled health staff 99% 91.9%
Maternal mortality per live birth 0.02% 0.08%
Neonatal mortality rate (before reaching 28 days of age) 0.74% 2.24%
Infant mortality rate (before reaching 1 year of age) 1.07% 3.97%
Mortality rate before reaching 5 years of age 1.18% 5.51%
Life expectancy 78.2 years 66.9 years

Children 0-14 years as share of population

Iran
Factual

UN forecast
Kiribati
Factual

UN forecast
1x
Year Young
Iran Kiribati
2100 12.1% 19.5%
2099 12.2% 19.6%
2098 12.2% 19.7%
2097 12.3% 19.8%
2096 12.3% 20%
2095 12.4% 20.1%
2094 12.5% 20.2%
2093 12.6% 20.3%
2092 12.6% 20.5%
2091 12.7% 20.6%
2090 12.8% 20.7%
2089 12.8% 20.9%
2088 12.9% 21%
2087 12.9% 21.2%
2086 12.9% 21.3%
2085 13% 21.4%
2084 13% 21.6%
2083 12.9% 21.7%
2082 12.9% 21.8%
2081 12.9% 22%
2080 12.9% 22.1%
2079 12.8% 22.2%
2078 12.8% 22.3%
2077 12.8% 22.5%
2076 12.7% 22.6%
2075 12.7% 22.7%
2074 12.7% 22.9%
2073 12.7% 23%
2072 12.7% 23.1%
2071 12.7% 23.3%
2070 12.7% 23.4%
2069 12.8% 23.6%
2068 12.9% 23.8%
2067 13% 23.9%
2066 13.1% 24.1%
2065 13.2% 24.3%
2064 13.3% 24.5%
2063 13.5% 24.7%
2062 13.6% 25%
2061 13.8% 25.2%
2060 14% 25.4%
2059 14.1% 25.6%
2058 14.3% 25.8%
2057 14.4% 26.1%
2056 14.6% 26.3%
2055 14.7% 26.5%
2054 14.8% 26.7%
2053 14.9% 26.9%
2052 15% 27.1%
2051 15.1% 27.3%
2050 15.1% 27.5%
2049 15.2% 27.7%
2048 15.2% 27.9%
2047 15.2% 28%
2046 15.2% 28.2%
2045 15.3% 28.4%
2044 15.3% 28.5%
2043 15.4% 28.7%
2042 15.4% 28.9%
2041 15.5% 29.1%
2040 15.7% 29.3%
2039 15.8% 29.5%
2038 16% 29.8%
2037 16.3% 30.1%
2036 16.5% 30.4%
2035 16.8% 30.8%
2034 17.2% 31.1%
2033 17.7% 31.5%
2032 18.3% 31.8%
2031 19% 32.2%
2030 19.6% 32.6%
2029 20.2% 32.9%
2028 20.8% 33.3%
2027 21.3% 33.7%
2026 21.8% 34.2%
2025 22.2% 34.6%
2024 22.4% 34.7%
2023 22.8% 34.9%
2022 23.2% 35.1%
2021 23.6% 35.2%
2020 23.8% 35.2%
2019 23.9% 35.1%
2018 24% 35.1%
2017 23.9% 35%
2016 23.8% 35%
2015 23.6% 35.2%
2014 23.4% 35.4%
2013 23.3% 35.7%
2012 23.3% 36.1%
2011 23.3% 36.4%
2010 23.4% 36.6%
2009 23.7% 36.8%
2008 24% 37%
2007 24.6% 37.3%
2006 25.3% 37.6%
2005 26.2% 38%
2004 27.4% 38.4%
2003 28.7% 38.9%
2002 30.1% 39.3%
2001 31.7% 39.8%
2000 33.6% 40.1%
1999 35.4% 40.5%
1998 37.3% 40.8%
1997 39.1% 41%
1996 40.7% 41.1%
1995 42.1% 41.2%
1994 43.2% 41.2%
1993 43.6% 41%
1992 43.6% 40.8%
1991 43.9% 40.5%
1990 44.1% 40.2%
1989 44.2% 39.9%
1988 44% 39.7%
1987 43.9% 39.4%
1986 43.7% 39.2%
1985 43.5% 39.2%
1984 43.3% 39.2%
1983 43% 39.5%
1982 42.7% 39.9%
1981 42.9% 40.5%
1980 43.3% 41.1%
1979 43.1% 41.8%
1978 43% 42.3%
1977 42.9% 42.8%
1976 43% 43.2%
1975 43.2% 43.7%
1974 43.5% 44.2%
1973 43.8% 44.6%
1972 44.2% 44.8%
1971 44.4% 44.8%
1970 44.6% 44.9%
1969 44.7% 45%
1968 44.8% 44.9%
1967 44.8% 44.5%
1966 44.9% 44.1%
1965 45% 43.9%
1964 45% 44%
1963 44.9% 44%
1962 44.6% 43.8%
1961 44.1% 43.5%
1960 43.5% 43.2%

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/iran/kiribati | CC BY

Children aged 0-14 make up 22.4% of the population in Iran and 34.7% in Kiribati in 2024, compared to 44.1% and 40.2% respectively in 1990.

Demographics of Iran and Kiribati compared.

Fertility rates around the globe

1x

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

GeoRank.org/birth-rate/iran/kiribati | CC BY

Maternal mortality chart: Iran vs Kiribati

Iran
Kiribati
1x
Year Maternal mortality per 100K births
Iran Kiribati
2023 16 80
2022 21 86
2021 51 122
2020 34 89
2019 18 89
2018 19 87
2017 20 90
2016 21 88
2015 22 90
2014 23 91
2013 24 93
2012 25 98
2011 26 98
2010 27 102
2009 28 99
2008 30 100
2007 31 101
2006 32 102
2005 33 104
2004 34 106
2003 37 105
2002 38 109
2001 40 113
2000 43 119
1999 46 121
1998 50 126
1997 55 132
1996 59 141
1995 65 148
1994 71 150
1993 80 162
1992 86 175
1991 94 188
1990 107 199
1989 113 212
1988 126 220
1987 136 231
1986 148 232
1985 160 246

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

GeoRank.org/birth-rate/iran/kiribati | CC BY

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 16 deaths per 100,000 live births in Iran, compared to 80 deaths in Kiribati.

Under-five mortality rates

Iran
Kiribati

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Iran Kiribati
2023 1.18% 5.51%
2022 1.22% 5.65%
2021 1.26% 5.76%
2020 1.3% 5.86%
2019 1.35% 5.93%
2018 1.39% 5.98%
2017 1.45% 5.99%
2016 1.5% 5.95%
2015 1.55% 5.89%
2014 1.61% 5.84%
2013 1.68% 5.8%
2012 1.75% 5.78%
2011 1.84% 5.79%
2010 1.93% 5.82%
2009 2.04% 5.87%
2008 2.17% 5.93%
2007 2.32% 5.99%
2006 2.48% 6.03%
2005 2.65% 6.07%
2004 2.83% 6.13%
2003 3.02% 6.2%
2002 3.22% 6.31%
2001 3.42% 6.46%
2000 3.63% 6.64%
1999 3.83% 6.83%
1998 4.02% 7.02%
1997 4.21% 7.22%
1996 4.4% 7.42%
1995 4.59% 7.64%
1994 4.79% 7.87%
1993 5% 8.13%
1992 5.22% 8.44%
1991 5.48% 8.77%
1990 5.76% 9.13%
1989 6.07% 9.5%
1988 6.42% 9.87%
1987 6.8% 10.2%
1986 7.2% 10.6%
1985 7.64% 10.9%
1984 8.13% 11.1%
1983 8.67% 11.4%
1982 9.3% 11.6%
1981 10% 11.7%
1980 10.8% 11.9%
1979 11.7% 12%
1978 12.6% 12.2%
1977 13.5% 12.3%
1976 14.4% 12.4%
1975 15.3% 12.5%
1974 16.2% 12.7%
1973 17.1% 13%
1972 18% 13.3%
1971 18.9% 13.7%
1970 - 14.1%
1969 - 14.6%
1968 - 15.2%
1967 - 15.8%
1966 - 16.4%
1965 - 17.1%
1964 - 17.7%
1963 - 18.3%
1962 - 18.9%
1961 - 19.5%
1960 - 19.9%

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

GeoRank.org/birth-rate/iran/kiribati | CC BY

The chance that a newborn baby will die before reaching age five is 1.18% in Iran and 5.51% in Kiribati. Above is a chart with historical data on under-five mortality rates.

Compare countries by 7 more topics

Help us show the world through your eyes

Share a photo of your city and help others discover what it looks like to live there. Your contribution makes our data come alive.

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)

Creative Commons Attribution (CC BY) — you’re free to copy, share, remix, adapt, and use even commercially as long as you give appropriate credit and clearly indicate if you made changes. Other sources may be subject to different license terms.