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Fertility & birth rates in Mexico and Sierra Leone

Updated on by Georank team

Mexico has an annual birth rate of 15.7 births per 1,000 people, compared to 30.6 for Sierra Leone. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 1.91 in Mexico and 3.79 in Sierra Leone — 98.5% difference.

1960 vs 2023, the fertility rate has decreased by 71.8% in Mexico and by 38.6% in Sierra Leone — in 1960, it was 6.76 and 6.18, respectively.

  • Mexico is ranked 100/196 by birth rate compared to 29/196 for Sierra Leone.
  • The mean age for first-time mothers is 21.3 years in Mexico, compared to 19.6 years in Sierra Leone.
  • The mean age at childbearing (for all the births, not just the first) is 26.8 in Mexico — it's 28.5 in Sierra Leone.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 60.1 in Mexico vs 93.6 in Sierra Leone.
  • In Mexico, 27.1% of the population is composed of women of reproductive age (15-49), compared to 25.4% in Sierra Leone.

Fertility rate in Mexico vs Sierra Leone by year

Mexico
Sierra Leone
1x
Year Fertility rate
Mexico Sierra Leone
2023 1.91 3.79
2022 1.94 3.88
2021 1.97 3.98
2020 1.99 4.08
2019 2.02 4.19
2018 2.03 4.29
2017 2.04 4.39
2016 2.09 4.47
2015 2.14 4.55
2014 2.21 4.7
2013 2.27 4.87
2012 2.29 5.06
2011 2.32 5.21
2010 2.34 5.33
2009 2.36 5.45
2008 2.39 5.56
2007 2.42 5.64
2006 2.46 5.74
2005 2.5 5.81
2004 2.54 5.92
2003 2.58 6.09
2002 2.63 6.23
2001 2.67 6.31
2000 2.71 6.36
1999 2.76 6.42
1998 2.82 6.5
1997 2.89 6.53
1996 2.96 6.55
1995 3.04 6.56
1994 3.13 6.56
1993 3.21 6.57
1992 3.29 6.56
1991 3.36 6.55
1990 3.44 6.57
1989 3.53 6.57
1988 3.64 6.59
1987 3.8 6.61
1986 3.97 6.6
1985 4.09 6.59
1984 4.18 6.59
1983 4.3 6.57
1982 4.43 6.56
1981 4.57 6.55
1980 4.74 6.56
1979 4.96 6.58
1978 5.2 6.59
1977 5.36 6.57
1976 5.54 6.55
1975 5.74 6.55
1974 5.95 6.53
1973 6.12 6.47
1972 6.28 6.45
1971 6.42 6.43
1970 6.53 6.41
1969 6.63 6.39
1968 6.71 6.39
1967 6.75 6.38
1966 6.79 6.35
1965 6.82 6.31
1964 6.83 6.29
1963 6.82 6.26
1962 6.8 6.22
1961 6.78 6.21
1960 6.76 6.18

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

GeoRank.org/birth-rate/mexico/sierra-leone | CC BY

According to the latest available data on birth rates, the fertility rate in Mexico was 1.91 children per woman in 2023, compared to 3.79 in Sierra Leone in 2023. The replacement level is considered to be 2.1 children per woman.

Check Mexico vs Sierra Leone population clock for a dynamic visualization of the changing population.

Natural population change by year

Mexico
Sierra Leone
1x
Year Natural population change
Mexico Sierra Leone
2023 1,238,366 188,788
2022 1,224,397 186,625
2021 936,682 183,326
2020 1,031,637 181,015
2019 1,357,485 181,068
2018 1,366,076 178,772
2017 1,384,178 173,259
2016 1,445,256 168,784
2015 1,508,439 162,275
2014 1,587,620 160,137
2013 1,642,609 161,265
2012 1,656,599 160,915
2011 1,659,161 158,858
2010 1,658,682 155,338
2009 1,661,180 152,669
2008 1,670,846 149,855
2007 1,684,915 145,740
2006 1,706,084 144,127
2005 1,732,663 137,234
2004 1,759,250 132,661
2003 1,788,016 130,312
2002 1,820,665 126,429
2001 1,836,418 116,647
2000 1,845,383 110,754
1999 1,859,475 102,295
1998 1,871,650 103,906
1997 1,898,383 105,433
1996 1,922,554 104,140
1995 1,941,458 100,885
1994 1,959,775 101,486
1993 1,963,708 103,317
1992 1,956,659 103,251
1991 1,942,832 105,477
1990 1,926,480 100,778
1989 1,927,752 98,298
1988 1,936,601 96,344
1987 1,971,231 94,235
1986 1,998,043 90,902
1985 1,983,622 88,869
1984 1,960,428 87,072
1983 1,939,193 84,628
1982 1,921,772 82,457
1981 1,904,384 80,111
1980 1,893,158 77,932
1979 1,908,018 75,992
1978 1,921,419 74,130
1977 1,902,964 71,663
1976 1,891,958 69,506
1975 1,880,241 67,560
1974 1,868,809 65,357
1973 1,845,593 62,443
1972 1,823,302 60,279
1971 1,790,990 58,484
1970 1,753,370 56,513
1969 1,711,297 54,768
1968 1,671,918 53,126
1967 1,620,534 51,734
1966 1,566,170 49,486
1965 1,508,344 47,223
1964 1,447,360 45,487
1963 1,387,678 43,569
1962 1,328,319 41,603
1961 1,265,833 40,022
1960 1,206,955 38,192

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

GeoRank.org/birth-rate/mexico/sierra-leone | 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 +0.95% in Mexico and +2.23% in Sierra Leone.

For the past 10 years, the annual natural population change has been +1.05% in Mexico and +2.31% in Sierra Leone.

Birth rate in Mexico vs Sierra Leone by year

Mexico
Sierra Leone

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Mexico Sierra Leone
2023 15.7 30.6
2022 16 31.1
2021 16.4 31.6
2020 16.6 32.2
2019 16.9 32.8
2018 17 33.3
2017 17.2 33.8
2016 17.7 34.2
2015 18.2 34.7
2014 19 35.6
2013 19.6 36.6
2012 19.9 37.8
2011 20.1 38.5
2010 20.3 39.1
2009 20.6 39.9
2008 20.8 40.6
2007 21.1 41.1
2006 21.5 41.8
2005 21.9 42
2004 22.4 42.5
2003 22.8 43.5
2002 23.4 44.3
2001 23.8 44
2000 24.2 45
1999 24.6 46.1
1998 25.1 46.3
1997 25.8 46.3
1996 26.4 46.5
1995 27.1 46.8
1994 27.7 46.8
1993 28.3 46.9
1992 28.7 47
1991 29.1 47.5
1990 29.4 45.5
1989 29.9 46.3
1988 30.4 46.4
1987 31.4 46.6
1986 32.3 46.6
1985 32.7 46.7
1984 33.1 46.8
1983 33.4 46.7
1982 33.9 46.8
1981 34.3 46.8
1980 35 46.8
1979 36.2 47
1978 37.4 47.2
1977 38.1 47.1
1976 39.1 47.2
1975 40.1 47.3
1974 41.2 47.4
1973 42.1 47.2
1972 43 47.2
1971 43.9 47.3
1970 44.5 47.4
1969 45.1 47.5
1968 45.6 47.7
1967 45.9 47.9
1966 46.3 48
1965 46.5 48
1964 46.8 48.2
1963 46.8 48.2
1962 46.8 48.1
1961 46.8 48.1
1960 46.9 48

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

GeoRank.org/birth-rate/mexico/sierra-leone | CC BY

The latest reported birth rate per 1,000 people in 2023 was 15.7 in Mexico and 30.6 in Sierra Leone, compared with 46.9 and 48, respectively, in 1960.

Birth rate data compared

Mexico Sierra Leone
Fertility rate 1.91 3.79
Fertility rate rank 104/196 35/196
Birth rate 15.7 30.6
Birth rate rank 100/196 29/196
Population change due to births and deaths +1,238,366 +188,788
Natural population change rank 12/196 62/196
Natural population change rate +0.95% +2.23%
Population growth +0.86% +2.15%
Population growth rank 110/197 47/197
Age at first childbirth 21.3 years 19.6 years
Average age at childbearing 26.8 years 28.5 years
Annual births per 1,000 women ages 15-19 57.7 87.7
Annual births per 1,000 women ages 20-29 99.1 169.3
Annual births per 1,000 women ages 30+ 16.3 53.4
Female of reproductive age (15-49), share of population 27.1% 25.4%
Any modern method of contraceptive prevalence among married women ages 15-49 69.1% 20.9%
Share of births attended by skilled health staff 96.6% 86.9%
Maternal mortality per live birth 0.04% 0.35%
Neonatal mortality rate (before reaching 28 days of age) 0.76% 2.93%
Infant mortality rate (before reaching 1 year of age) 1.08% 5.62%
Mortality rate before reaching 5 years of age 1.25% 9.43%
Life expectancy 75.6 years 62.3 years

Children 0-14 years as share of population

Mexico
Factual

UN forecast
Sierra Leone
Factual

UN forecast
1x
Year Young
Mexico Sierra Leone
2100 13.3% 19%
2099 13.3% 19%
2098 13.3% 19.1%
2097 13.3% 19.2%
2096 13.4% 19.3%
2095 13.4% 19.5%
2094 13.4% 19.6%
2093 13.5% 19.7%
2092 13.5% 19.8%
2091 13.5% 19.9%
2090 13.6% 20%
2089 13.6% 20.1%
2088 13.7% 20.3%
2087 13.7% 20.4%
2086 13.8% 20.5%
2085 13.8% 20.7%
2084 13.9% 20.8%
2083 14% 20.9%
2082 14% 21.1%
2081 14.1% 21.2%
2080 14.1% 21.4%
2079 14.2% 21.6%
2078 14.3% 21.7%
2077 14.3% 21.9%
2076 14.4% 22.1%
2075 14.5% 22.2%
2074 14.6% 22.4%
2073 14.6% 22.6%
2072 14.7% 22.8%
2071 14.8% 23%
2070 14.9% 23.2%
2069 15% 23.4%
2068 15.1% 23.6%
2067 15.2% 23.8%
2066 15.3% 24%
2065 15.4% 24.3%
2064 15.5% 24.5%
2063 15.6% 24.7%
2062 15.7% 25%
2061 15.8% 25.2%
2060 16% 25.5%
2059 16.1% 25.7%
2058 16.2% 26%
2057 16.4% 26.3%
2056 16.5% 26.6%
2055 16.7% 26.9%
2054 16.9% 27.1%
2053 17% 27.4%
2052 17.2% 27.7%
2051 17.4% 28.1%
2050 17.6% 28.4%
2049 17.8% 28.7%
2048 17.9% 29%
2047 18.1% 29.3%
2046 18.3% 29.7%
2045 18.5% 30%
2044 18.7% 30.3%
2043 18.9% 30.7%
2042 19.1% 31.1%
2041 19.3% 31.4%
2040 19.5% 31.8%
2039 19.7% 32.2%
2038 20% 32.6%
2037 20.2% 33%
2036 20.5% 33.4%
2035 20.7% 33.8%
2034 21% 34.2%
2033 21.3% 34.6%
2032 21.6% 35%
2031 21.9% 35.4%
2030 22.2% 35.7%
2029 22.6% 36.1%
2028 23% 36.5%
2027 23.5% 37%
2026 23.9% 37.4%
2025 24.3% 37.9%
2024 24.5% 38.1%
2023 24.9% 38.5%
2022 25.3% 39%
2021 25.7% 39.4%
2020 26% 39.8%
2019 26.3% 40.2%
2018 26.7% 40.6%
2017 27.2% 41%
2016 27.6% 41.4%
2015 28% 41.8%
2014 28.3% 42.2%
2013 28.7% 42.5%
2012 29% 42.8%
2011 29.4% 43%
2010 29.8% 43.2%
2009 30.2% 43.4%
2008 30.6% 43.5%
2007 31.1% 43.6%
2006 31.6% 43.7%
2005 32.1% 43.8%
2004 32.5% 43.9%
2003 33% 43.9%
2002 33.4% 43.9%
2001 33.9% 43.9%
2000 34.3% 43.8%
1999 34.8% 43.7%
1998 35.2% 43.6%
1997 35.6% 43.5%
1996 36% 43.5%
1995 36.5% 43.4%
1994 36.9% 43.3%
1993 37.3% 43.2%
1992 37.8% 43.1%
1991 38.4% 43%
1990 39% 42.9%
1989 39.7% 42.9%
1988 40.3% 42.8%
1987 41% 42.7%
1986 41.6% 42.6%
1985 42.3% 42.5%
1984 43% 42.3%
1983 43.7% 42.2%
1982 44.4% 42.1%
1981 45.2% 42%
1980 45.8% 41.9%
1979 46.3% 41.8%
1978 46.7% 41.7%
1977 47% 41.6%
1976 47.2% 41.4%
1975 47.5% 41.3%
1974 47.6% 41.1%
1973 47.7% 40.9%
1972 47.7% 40.7%
1971 47.8% 40.6%
1970 47.7% 40.3%
1969 47.7% 40.1%
1968 47.6% 39.9%
1967 47.6% 39.6%
1966 47.5% 39.4%
1965 47.4% 39.1%
1964 47.3% 38.8%
1963 47.2% 38.5%
1962 47.1% 38.3%
1961 47% 38.3%
1960 46.8% 38.2%

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/mexico/sierra-leone | CC BY

Children aged 0-14 make up 24.5% of the population in Mexico and 38.1% in Sierra Leone in 2024, compared to 39% and 42.9% respectively in 1990.

Demographics of Mexico and Sierra Leone compared.

Fertility rates around the globe

1x

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

GeoRank.org/birth-rate/mexico/sierra-leone | CC BY

Maternal mortality chart: Mexico vs Sierra Leone

Mexico
Sierra Leone
1x
Year Maternal mortality per 100K births
Mexico Sierra Leone
2023 42 354
2022 45 370
2021 104 403
2020 61 422
2019 43 464
2018 44 491
2017 44 578
2016 43 633
2015 43 730
2014 44 821
2013 45 842
2012 46 915
2011 47 967
2010 50 1,018
2009 51 1,054
2008 51 1,093
2007 50 1,132
2006 51 1,168
2005 52 1,294
2004 53 1,366
2003 54 1,433
2002 55 1,492
2001 55 1,518
2000 56 1,603
1999 58 1,731
1998 60 1,753
1997 62 1,721
1996 64 1,726
1995 66 1,777
1994 69 1,755
1993 71 1,696
1992 73 1,681
1991 77 1,699
1990 81 1,572
1989 85 1,575
1988 88 1,549
1987 93 1,533
1986 100 1,530
1985 107 1,506

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

GeoRank.org/birth-rate/mexico/sierra-leone | CC BY

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 42 deaths per 100,000 live births in Mexico, compared to 354 deaths in Sierra Leone.

Under-five mortality rates

Mexico
Sierra Leone

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Mexico Sierra Leone
2023 1.25% 9.43%
2022 1.29% 9.77%
2021 1.33% 10.1%
2020 1.38% 10.5%
2019 1.42% 10.9%
2018 1.47% 11.3%
2017 1.52% 11.8%
2016 1.57% 12.3%
2015 1.62% 13.8%
2014 1.68% 13.7%
2013 1.73% 13.9%
2012 1.79% 14.5%
2011 1.85% 15.2%
2010 1.91% 15.9%
2009 1.98% 16.6%
2008 2.04% 17.3%
2007 2.11% 18.1%
2006 2.19% 18.8%
2005 2.27% 19.4%
2004 2.36% 20.1%
2003 2.46% 20.7%
2002 2.57% 21.3%
2001 2.68% 21.8%
2000 2.81% 22.4%
1999 2.94% 22.9%
1998 3.09% 23.4%
1997 3.24% 23.9%
1996 3.4% 24.3%
1995 3.57% 24.7%
1994 3.74% 25%
1993 3.92% 25.3%
1992 4.12% 25.5%
1991 4.32% 25.7%
1990 4.53% 25.9%
1989 4.75% 26.2%
1988 4.98% 26.4%
1987 5.21% 26.6%
1986 5.46% 26.9%
1985 5.71% 27.2%
1984 5.98% 27.5%
1983 6.26% 27.8%
1982 6.55% 28.1%
1981 6.86% 28.5%
1980 7.18% 28.9%
1979 7.51% 29.2%
1978 7.85% 29.6%
1977 8.18% 30%
1976 8.52% 30.5%
1975 8.86% 30.9%
1974 9.21% 31.4%
1973 9.56% 31.9%
1972 9.93% 32.3%
1971 10.3% 32.9%
1970 10.7% 33.4%
1969 11.1% 33.9%
1968 11.5% 34.5%
1967 11.9% 35%
1966 12.3% 35.6%
1965 12.7% 36.2%
1964 13.2% 36.8%
1963 13.7% 37.4%
1962 14.3% 38%
1961 14.8% 38.5%
1960 15.5% 39.1%

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

GeoRank.org/birth-rate/mexico/sierra-leone | CC BY

The chance that a newborn baby will die before reaching age five is 1.25% in Mexico and 9.43% in Sierra Leone. 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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