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Fertility & birth rates in Mongolia and Nigeria

Updated on by Georank team

Mongolia has an annual birth rate of 19 births per 1,000 people, compared to 33 for Nigeria. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 2.7 in Mongolia and 4.48 in Nigeria — 66% difference.

1960 vs 2023, the fertility rate has decreased by 60.4% in Mongolia and by 29.6% in Nigeria — in 1960, it was 6.82 and 6.36, respectively.

  • Mongolia is ranked 81/196 by birth rate compared to 20/196 for Nigeria.
  • The mean age for first-time mothers is 20.5 years in Mongolia, compared to 20.4 years in Nigeria.
  • The mean age at childbearing (for all the births, not just the first) is 29.3 in Mongolia — it's 29.1 in Nigeria.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 19.7 in Mongolia vs 86.4 in Nigeria.
  • In Mongolia, 24.2% of the population is composed of women of reproductive age (15-49), compared to 24% in Nigeria.

Fertility rate in Mongolia vs Nigeria by year

Mongolia
Nigeria
1x
Year Fertility rate
Mongolia Nigeria
2023 2.7 4.48
2022 2.7 4.55
2021 2.8 4.64
2020 2.9 4.7
2019 3 4.86
2018 2.9 5.02
2017 2.8 5.18
2016 3 5.34
2015 3 5.5
2014 3.1 5.62
2013 3 5.69
2012 2.7 5.8
2011 2.6 5.89
2010 2.4 5.95
2009 2.8 5.99
2008 2.6 6.02
2007 2.3 6.03
2006 2.1 6.05
2005 2 6.06
2004 2 6.09
2003 2 6.1
2002 2.1 6.12
2001 2.2 6.13
2000 2.2 6.12
1999 2.3 6.08
1998 2.3 6.07
1997 2.4 6.14
1996 2.5 6.22
1995 2.77 6.27
1994 2.7 6.32
1993 2.5 6.35
1992 3.5 6.39
1991 4 6.43
1990 4.5 6.46
1989 4.42 6.49
1988 4.65 6.5
1987 4.83 6.5
1986 5.03 6.56
1985 5.26 6.62
1984 5.45 6.7
1983 5.63 6.78
1982 5.8 6.8
1981 5.98 6.82
1980 6.21 6.85
1979 6.42 6.89
1978 6.62 6.92
1977 6.79 6.86
1976 6.93 6.81
1975 7.07 6.77
1974 7.17 6.7
1973 7.24 6.63
1972 7.28 6.58
1971 7.3 6.53
1970 7.31 6.47
1969 7.34 6.44
1968 7.37 6.42
1967 7.39 6.4
1966 7.41 6.39
1965 7.38 6.37
1964 7.33 6.36
1963 7.24 6.35
1962 7.1 6.36
1961 6.96 6.35
1960 6.82 6.36

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

GeoRank.org/birth-rate/mongolia/nigeria | CC BY

According to the latest available data on birth rates, the fertility rate in Mongolia was 2.7 children per woman in 2023, compared to 4.48 in Nigeria in 2023. The replacement level is considered to be 2.1 children per woman.

Check Mongolia vs Nigeria population clock for a dynamic visualization of the changing population.

Natural population change by year

Mongolia
Nigeria
1x
Year Natural population change
Mongolia Nigeria
2023 46,995 4,834,309
2022 47,730 4,739,502
2021 52,109 4,641,562
2020 60,888 4,525,164
2019 61,433 4,609,941
2018 60,635 4,659,898
2017 57,940 4,706,183
2016 62,086 4,761,594
2015 64,473 4,823,045
2014 66,078 4,862,319
2013 62,618 4,811,751
2012 55,942 4,774,508
2011 50,711 4,728,363
2010 44,914 4,629,173
2009 48,876 4,528,149
2008 45,843 4,412,976
2007 39,636 4,265,428
2006 33,609 4,135,703
2005 29,290 4,013,788
2004 28,418 3,877,376
2003 28,827 3,751,120
2002 30,439 3,606,814
2001 32,052 3,478,370
2000 32,753 3,343,196
1999 32,283 3,155,425
1998 31,757 3,003,946
1997 32,403 2,936,500
1996 33,741 2,882,205
1995 34,473 2,830,771
1994 34,711 2,735,198
1993 36,924 2,673,675
1992 42,437 2,596,173
1991 47,884 2,527,807
1990 49,443 2,491,928
1989 51,420 2,452,324
1988 51,588 2,376,419
1987 51,140 2,322,397
1986 50,329 2,295,003
1985 49,944 2,289,784
1984 48,562 2,278,060
1983 46,919 2,292,089
1982 45,179 2,233,401
1981 43,588 2,179,884
1980 42,343 2,121,618
1979 41,568 2,074,807
1978 40,276 2,019,621
1977 38,995 1,923,917
1976 37,670 1,827,289
1975 36,490 1,718,623
1974 35,297 1,624,813
1973 33,993 1,525,485
1972 32,727 1,448,928
1971 31,536 1,373,896
1970 30,558 1,295,507
1969 29,781 1,213,484
1968 29,017 1,168,254
1967 28,178 1,082,884
1966 27,338 1,095,582
1965 26,364 1,061,840
1964 25,317 1,028,272
1963 24,142 995,116
1962 22,960 966,452
1961 21,873 932,111
1960 20,726 901,301

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

GeoRank.org/birth-rate/mongolia/nigeria | 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 +1.35% in Mongolia and +2.12% in Nigeria.

For the past 10 years, the annual natural population change has been +1.81% in Mongolia and +2.29% in Nigeria.

Birth rate in Mongolia vs Nigeria by year

Mongolia
Nigeria

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Mongolia Nigeria
2023 19 33
2022 19.5 33.2
2021 21.6 33.5
2020 23.4 33.7
2019 24.4 34.7
2018 24.5 35.7
2017 23.9 36.7
2016 25.9 37.8
2015 27.1 39
2014 28 39.9
2013 27.5 40.4
2012 26 41.1
2011 25.1 41.8
2010 23.1 42.1
2009 24.8 42.5
2008 23.9 42.8
2007 21.9 42.9
2006 20 43.2
2005 18.6 43.4
2004 18.4 43.5
2003 18.6 43.7
2002 19.4 43.8
2001 20.3 43.9
2000 20.8 43.9
1999 21.1 43.4
1998 21.4 43.2
1997 22.2 43.5
1996 23.3 43.9
1995 24 44.1
1994 24.5 44
1993 25.8 44.1
1992 28.8 44.2
1991 31.9 44.3
1990 34.1 44.5
1989 35.3 44.8
1988 36.4 44.7
1987 37.2 44.8
1986 37.7 45.3
1985 38.5 45.9
1984 38.7 46.5
1983 38.6 47.5
1982 38.5 47.5
1981 38.4 47.9
1980 38.4 48.3
1979 38.7 48.8
1978 38.9 49.3
1977 39 49.1
1976 39.1 49
1975 39.3 49
1974 39.5 48.7
1973 39.6 48.2
1972 39.8 48
1971 40 47.8
1970 40.4 47.4
1969 40.9 47.3
1968 41.6 47.2
1967 42.3 47.1
1966 43.1 47
1965 43.6 46.9
1964 44 46.9
1963 44.2 46.8
1962 44.1 46.7
1961 44.2 46.6
1960 44.1 46.5

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

GeoRank.org/birth-rate/mongolia/nigeria | CC BY

The latest reported birth rate per 1,000 people in 2023 was 19 in Mongolia and 33 in Nigeria, compared with 44.1 and 46.5, respectively, in 1960.

Birth rate data compared

Mongolia Nigeria
Fertility rate 2.7 4.48
Fertility rate rank 67/196 15/196
Birth rate 19 33
Birth rate rank 81/196 20/196
Population change due to births and deaths +46,995 +4,834,309
Natural population change rank 99/196 3/196
Natural population change rate +1.35% +2.12%
Population growth +1.25% +2.1%
Population growth rank 86/197 48/197
Age at first childbirth 20.5 years 20.4 years
Average age at childbearing 29.3 years 29.1 years
Annual births per 1,000 women ages 15-19 19.1 80.7
Annual births per 1,000 women ages 20-29 133.8 200.4
Annual births per 1,000 women ages 30+ 32.1 67.2
Female of reproductive age (15-49), share of population 24.2% 24%
Any modern method of contraceptive prevalence among married women ages 15-49 45.2% 18.2%
Share of births attended by skilled health staff 99.3% 50.7%
Maternal mortality per live birth 0.04% 0.99%
Neonatal mortality rate (before reaching 28 days of age) 0.74% 3.37%
Infant mortality rate (before reaching 1 year of age) 1.14% 6.01%
Mortality rate before reaching 5 years of age 1.36% 10.5%
Life expectancy 72.5 years 55 years

Children 0-14 years as share of population

Mongolia
Factual

UN forecast
Nigeria
Factual

UN forecast
1x
Year Young
Mongolia Nigeria
2100 16.3% 20.4%
2099 16.4% 20.5%
2098 16.4% 20.6%
2097 16.5% 20.7%
2096 16.6% 20.8%
2095 16.7% 20.9%
2094 16.8% 21%
2093 16.9% 21.1%
2092 17% 21.2%
2091 17.2% 21.4%
2090 17.3% 21.5%
2089 17.4% 21.6%
2088 17.6% 21.8%
2087 17.7% 21.9%
2086 17.9% 22.1%
2085 18% 22.2%
2084 18.1% 22.4%
2083 18.2% 22.6%
2082 18.3% 22.7%
2081 18.4% 22.9%
2080 18.5% 23.1%
2079 18.6% 23.3%
2078 18.6% 23.5%
2077 18.7% 23.7%
2076 18.7% 23.9%
2075 18.7% 24.1%
2074 18.7% 24.3%
2073 18.8% 24.5%
2072 18.8% 24.7%
2071 18.9% 25%
2070 18.9% 25.2%
2069 19% 25.4%
2068 19.1% 25.7%
2067 19.3% 25.9%
2066 19.4% 26.1%
2065 19.6% 26.4%
2064 19.8% 26.6%
2063 20.1% 26.9%
2062 20.4% 27.2%
2061 20.7% 27.4%
2060 21% 27.7%
2059 21.3% 28%
2058 21.6% 28.3%
2057 21.9% 28.6%
2056 22.2% 29%
2055 22.5% 29.3%
2054 22.7% 29.6%
2053 23% 30%
2052 23.1% 30.3%
2051 23.3% 30.7%
2050 23.3% 31.1%
2049 23.4% 31.5%
2048 23.4% 31.8%
2047 23.3% 32.2%
2046 23.3% 32.6%
2045 23.2% 32.9%
2044 23.1% 33.3%
2043 23% 33.7%
2042 22.9% 34%
2041 22.8% 34.4%
2040 22.8% 34.7%
2039 22.9% 35%
2038 23% 35.4%
2037 23.3% 35.7%
2036 23.6% 36%
2035 24% 36.3%
2034 24.6% 36.6%
2033 25.2% 37%
2032 25.9% 37.4%
2031 26.8% 37.8%
2030 27.8% 38.3%
2029 28.8% 38.8%
2028 29.7% 39.3%
2027 30.5% 39.8%
2026 31.2% 40.3%
2025 31.9% 40.8%
2024 32.2% 41%
2023 32.6% 41.5%
2022 32.9% 42%
2021 32.9% 42.4%
2020 32.8% 42.8%
2019 32.3% 43.2%
2018 31.6% 43.6%
2017 30.9% 43.9%
2016 30.2% 44.1%
2015 29.5% 44.3%
2014 28.9% 44.4%
2013 28.5% 44.5%
2012 28.1% 44.5%
2011 28% 44.5%
2010 27.9% 44.4%
2009 27.9% 44.4%
2008 28.1% 44.3%
2007 28.5% 44.2%
2006 29.1% 44.1%
2005 29.9% 44%
2004 30.8% 43.9%
2003 31.8% 43.8%
2002 32.9% 43.8%
2001 34.1% 43.7%
2000 35.2% 43.7%
1999 36.2% 43.8%
1998 37% 43.9%
1997 37.8% 44.1%
1996 38.4% 44.2%
1995 39% 44.4%
1994 39.5% 44.6%
1993 40% 44.8%
1992 40.5% 45%
1991 41% 45.2%
1990 41.4% 45.3%
1989 41.7% 45.5%
1988 41.8% 45.5%
1987 42% 45.6%
1986 42.1% 45.6%
1985 42.3% 45.5%
1984 42.5% 45.4%
1983 42.7% 45.2%
1982 43% 45%
1981 43.3% 44.8%
1980 43.7% 44.6%
1979 44.1% 44.4%
1978 44.5% 44.2%
1977 44.8% 43.9%
1976 45.2% 43.7%
1975 45.4% 43.4%
1974 45.6% 43.2%
1973 45.8% 43%
1972 45.8% 42.8%
1971 45.8% 42.5%
1970 45.6% 42.4%
1969 45.4% 42.2%
1968 44.9% 42%
1967 44.2% 41.8%
1966 43.3% 41.7%
1965 42.4% 41.5%
1964 41.4% 41.4%
1963 40.4% 41.2%
1962 39.6% 41.1%
1961 38.8% 41.1%
1960 38.1% 41.1%

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/mongolia/nigeria | CC BY

Children aged 0-14 make up 32.2% of the population in Mongolia and 41% in Nigeria in 2024, compared to 41.4% and 45.3% respectively in 1990.

Demographics of Mongolia and Nigeria compared.

Fertility rates around the globe

1x

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

GeoRank.org/birth-rate/mongolia/nigeria | CC BY

Maternal mortality chart: Mongolia vs Nigeria

Mongolia
Nigeria
1x
Year Maternal mortality per 100K births
Mongolia Nigeria
2023 41 993
2022 41 1,016
2021 63 1,046
2020 47 1,065
2019 45 1,091
2018 45 1,118
2017 45 1,142
2016 48 1,155
2015 52 1,168
2014 56 1,155
2013 59 1,146
2012 63 1,124
2011 67 1,108
2010 71 1,094
2009 75 1,088
2008 77 1,081
2007 81 1,063
2006 90 1,067
2005 99 1,060
2004 108 1,075
2003 114 1,090
2002 120 1,117
2001 130 1,130
2000 144 1,136
1999 162 1,165
1998 174 1,189
1997 180 1,184
1996 178 1,185
1995 176 1,186
1994 178 1,193
1993 181 1,200
1992 199 1,246
1991 227 1,282
1990 276 1,285
1989 311 1,304
1988 335 1,332
1987 341 1,351
1986 346 1,363
1985 352 1,344

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

GeoRank.org/birth-rate/mongolia/nigeria | CC BY

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 41 deaths per 100,000 live births in Mongolia, compared to 993 deaths in Nigeria.

Under-five mortality rates

Mongolia
Nigeria

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Mongolia Nigeria
2023 1.36% 10.5%
2022 1.39% 10.8%
2021 1.43% 11.1%
2020 1.48% 11.4%
2019 1.56% 11.8%
2018 1.64% 12%
2017 1.74% 12.3%
2016 1.84% 12.5%
2015 1.94% 12.6%
2014 2.04% 12.8%
2013 2.15% 12.9%
2012 2.28% 13.1%
2011 2.44% 13.3%
2010 2.63% 13.5%
2009 2.85% 13.8%
2008 3.11% 14.1%
2007 3.39% 14.5%
2006 3.71% 15%
2005 4.07% 15.5%
2004 4.45% 16%
2003 4.87% 16.5%
2002 5.32% 17.1%
2001 5.8% 17.7%
2000 6.29% 18.2%
1999 6.78% 18.8%
1998 7.27% 19.3%
1997 7.74% 19.7%
1996 8.19% 20.1%
1995 8.6% 20.4%
1994 9% 20.6%
1993 9.39% 20.7%
1992 9.78% 20.8%
1991 10.2% 20.9%
1990 10.7% 21%
1989 11.1% 21%
1988 11.7% 21%
1987 12.2% 20.9%
1986 12.8% 20.9%
1985 13.4% 20.8%
1984 13.9% 20.7%
1983 14.4% 20.7%
1982 15% 20.8%
1981 15.5% 21%
1980 16.1% 21.3%
1979 16.7% 21.8%
1978 17.3% 22.3%
1977 - 22.9%
1976 - 23.6%
1975 - 24.4%
1974 - 25.2%
1973 - 26.1%
1972 - 26.9%
1971 - 27.7%
1970 - 28.5%
1969 - 29.3%
1968 - 30%
1967 - 30.7%
1966 - 31.3%
1965 - 32%
1964 - 32.7%

Data sources: World Bank | Health (1964–2023, retrieved 2026-04-06).

GeoRank.org/birth-rate/mongolia/nigeria | CC BY

The chance that a newborn baby will die before reaching age five is 1.36% in Mongolia and 10.5% in Nigeria. 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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