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Fertility & birth rates in Nauru and Zambia

Updated on by Georank team

Nauru has an annual birth rate of 25.5 births per 1,000 people, compared to 33.1 for Zambia. The average number of children a woman is expected to have during her lifetime — the fertility rate, is 3.33 in Nauru and 4.1 in Zambia — 23.1% difference.

1960 vs 2023, the fertility rate has decreased by 37.6% in Nauru and by 41% in Zambia — in 1960, it was 5.34 and 6.95, respectively.

  • Nauru is ranked 52/196 by birth rate compared to 19/196 for Zambia.
  • The mean age for first-time mothers is 22.1 years in Nauru, compared to 19.2 years in Zambia.
  • The mean age at childbearing (for all the births, not just the first) is 27.1 in Nauru — it's 28.3 in Zambia.
  • Annual births per 1,000 women ages 15-19 (adolescent birth rate or teenage mother rate) is 76.2 in Nauru vs 115.9 in Zambia.
  • In Nauru, 24.6% of the population is composed of women of reproductive age (15-49), compared to 25.3% in Zambia.

Fertility rate in Nauru vs Zambia by year

Nauru
Zambia
1x
Year Fertility rate
Nauru Zambia
2023 3.33 4.1
2022 3.38 4.18
2021 3.43 4.25
2020 3.47 4.32
2019 3.53 4.42
2018 3.68 4.49
2017 3.88 4.57
2016 4.03 4.67
2015 4.08 4.78
2014 4.09 4.89
2013 4.1 5.01
2012 4.12 5.14
2011 4.12 5.26
2010 4.02 5.36
2009 3.85 5.45
2008 3.67 5.53
2007 3.5 5.61
2006 3.4 5.68
2005 3.38 5.7
2004 3.38 5.7
2003 3.39 5.71
2002 3.4 5.77
2001 3.46 5.85
2000 3.54 5.92
1999 3.64 6
1998 3.68 6.07
1997 3.74 6.12
1996 3.78 6.18
1995 3.81 6.23
1994 3.84 6.26
1993 3.89 6.3
1992 3.95 6.35
1991 3.99 6.46
1990 4.02 6.57
1989 4.07 6.64
1988 4.11 6.7
1987 4.14 6.8
1986 4.15 6.87
1985 4.14 6.93
1984 4.11 6.97
1983 4.06 7.01
1982 3.99 7.04
1981 3.94 7.07
1980 3.88 7.14
1979 3.85 7.22
1978 3.84 7.29
1977 3.86 7.35
1976 3.9 7.39
1975 3.97 7.42
1974 4.07 7.36
1973 4.19 7.34
1972 4.36 7.3
1971 4.54 7.26
1970 4.74 7.22
1969 4.94 7.18
1968 5.14 7.18
1967 5.29 7.15
1966 5.41 7.14
1965 5.48 7.12
1964 5.47 7.09
1963 5.44 7.06
1962 5.42 7.01
1961 5.38 6.98
1960 5.34 6.95

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

GeoRank.org/birth-rate/nauru/zambia | CC BY

According to the latest available data on birth rates, the fertility rate in Nauru was 3.33 children per woman in 2023, compared to 4.1 in Zambia in 2023. The replacement level is considered to be 2.1 children per woman.

Check Nauru vs Zambia population clock for a dynamic visualization of the changing population.

Natural population change by year

Nauru
Zambia
1x
Year Natural population change
Nauru Zambia
2023 213 577,660
2022 226 563,456
2021 236 535,629
2020 246 536,484
2019 255 528,089
2018 265 515,644
2017 279 504,630
2016 289 497,521
2015 291 491,021
2014 290 483,663
2013 291 476,846
2012 292 469,406
2011 291 459,743
2010 281 448,337
2009 261 434,458
2008 240 419,560
2007 222 403,729
2006 209 387,891
2005 204 368,756
2004 202 349,352
2003 201 331,189
2002 200 316,041
2001 203 302,682
2000 207 293,186
1999 212 283,297
1998 214 275,568
1997 218 268,198
1996 221 262,468
1995 225 257,897
1994 229 252,023
1993 235 245,917
1992 237 239,953
1991 225 237,957
1990 214 235,835
1989 204 233,429
1988 195 230,118
1987 186 227,813
1986 178 224,768
1985 171 221,351
1984 166 216,695
1983 163 212,712
1982 162 207,621
1981 157 202,822
1980 145 198,817
1979 130 197,578
1978 111 194,933
1977 89 191,557
1976 79 186,762
1975 70 182,258
1974 63 174,484
1973 57 168,258
1972 53 161,648
1971 50 155,249
1970 49 149,380
1969 71 142,660
1968 116 137,315
1967 117 131,938
1966 123 127,164
1965 113 122,814
1964 100 117,197
1963 88 114,555
1962 75 110,173
1961 70 106,318
1960 72 102,335

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

GeoRank.org/birth-rate/nauru/zambia | 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 +1.8% in Nauru and +2.79% in Zambia.

For the past 10 years, the annual natural population change has been +2.28% in Nauru and +2.87% in Zambia.

Birth rate in Nauru vs Zambia by year

Nauru
Zambia

Annual births per 1,000 people

1x
Year Annual births per 1,000 people
Nauru Zambia
2023 25.5 33.1
2022 26.6 33.5
2021 27.8 33.9
2020 28.7 34.4
2019 29.6 35
2018 30.7 35.5
2017 32.2 35.9
2016 33.6 36.6
2015 34.2 37.3
2014 34.7 38.1
2013 35.3 39
2012 36.1 39.9
2011 36.8 40.7
2010 36.1 41.4
2009 34.3 42
2008 32.3 42.6
2007 30.4 43.2
2006 29.1 43.7
2005 28.5 43.8
2004 28.1 43.9
2003 27.9 43.9
2002 27.8 44.3
2001 27.9 44.8
2000 28.2 45.5
1999 28.6 45.9
1998 28.7 46.2
1997 29 46.3
1996 29.4 46.6
1995 29.8 46.8
1994 30.3 46.7
1993 31.1 46.6
1992 31.8 46.6
1991 31.7 46.9
1990 31.7 47
1989 31.9 47.1
1988 32 47.1
1987 32 47.3
1986 31.9 47.4
1985 31.9 47.4
1984 31.8 47.3
1983 31.8 47.3
1982 31.8 47.3
1981 31.2 47.3
1980 29.7 47.5
1979 27.6 48.2
1978 25 48.7
1977 21.8 49.2
1976 20.1 49.5
1975 18.7 50
1974 17.4 49.7
1973 16.3 49.7
1972 15.6 49.6
1971 15.2 49.4
1970 15.1 49.3
1969 18.8 48.9
1968 27.2 48.9
1967 28.3 48.8
1966 29.9 48.8
1965 29.1 48.8
1964 28.2 48.9
1963 27 48.9
1962 25.6 48.9
1961 25.6 48.9
1960 26.9 48.9

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

GeoRank.org/birth-rate/nauru/zambia | CC BY

The latest reported birth rate per 1,000 people in 2023 was 25.5 in Nauru and 33.1 in Zambia, compared with 26.9 and 48.9, respectively, in 1960.

Birth rate data compared

Nauru Zambia
Fertility rate 3.33 4.1
Fertility rate rank 47/196 24/196
Birth rate 25.5 33.1
Birth rate rank 52/196 19/196
Population change due to births and deaths +213 +577,660
Natural population change rank 150/196 34/196
Natural population change rate +1.8% +2.79%
Population growth +0.61% +2.85%
Population growth rank 126/197 21/197
Age at first childbirth 22.1 years 19.2 years
Average age at childbearing 27.1 years 28.3 years
Annual births per 1,000 women ages 15-19 77.7 115.9
Annual births per 1,000 women ages 20-29 176.3 176.3
Annual births per 1,000 women ages 30+ 37.1 64.8
Female of reproductive age (15-49), share of population 24.6% 25.3%
Any modern method of contraceptive prevalence among married women ages 15-49 25.1% 47.5%
Share of births attended by skilled health staff 97.4% 80.4%
Maternal mortality per live birth 0.27% 0.09%
Neonatal mortality rate (before reaching 28 days of age) 0.48% 2.2%
Infant mortality rate (before reaching 1 year of age) 0.83% 3.09%
Mortality rate before reaching 5 years of age 0.89% 4.47%
Life expectancy 62.6 years 66.9 years

Children 0-14 years as share of population

Nauru
Factual

UN forecast
Zambia
Factual

UN forecast
1x
Year Young
Nauru Zambia
2100 20.7% 21.6%
2099 20.8% 21.7%
2098 21% 21.9%
2097 21.1% 22%
2096 21.2% 22.2%
2095 21.3% 22.3%
2094 21.4% 22.5%
2093 21.6% 22.7%
2092 21.7% 22.8%
2091 21.9% 23%
2090 22% 23.1%
2089 22.2% 23.3%
2088 22.4% 23.5%
2087 22.5% 23.6%
2086 22.7% 23.8%
2085 22.9% 24%
2084 23.1% 24.2%
2083 23.3% 24.3%
2082 23.4% 24.5%
2081 23.6% 24.7%
2080 23.8% 24.9%
2079 23.9% 25.1%
2078 24.1% 25.3%
2077 24.2% 25.5%
2076 24.3% 25.7%
2075 24.5% 25.9%
2074 24.6% 26.1%
2073 24.7% 26.4%
2072 24.9% 26.6%
2071 25% 26.8%
2070 25.1% 27%
2069 25.3% 27.2%
2068 25.4% 27.5%
2067 25.6% 27.7%
2066 25.8% 27.9%
2065 26% 28.1%
2064 26.2% 28.4%
2063 26.4% 28.6%
2062 26.7% 28.9%
2061 26.9% 29.1%
2060 27.2% 29.3%
2059 27.5% 29.6%
2058 27.9% 29.8%
2057 28.2% 30.1%
2056 28.5% 30.4%
2055 28.8% 30.6%
2054 29.1% 30.9%
2053 29.4% 31.2%
2052 29.7% 31.5%
2051 29.9% 31.8%
2050 30.2% 32.2%
2049 30.4% 32.5%
2048 30.6% 32.8%
2047 30.7% 33.2%
2046 30.8% 33.5%
2045 30.9% 33.9%
2044 30.9% 34.2%
2043 31% 34.6%
2042 31% 34.9%
2041 31% 35.3%
2040 31% 35.6%
2039 31.1% 36%
2038 31.2% 36.3%
2037 31.4% 36.6%
2036 31.8% 37%
2035 32% 37.3%
2034 32.3% 37.6%
2033 32.5% 38%
2032 32.9% 38.3%
2031 33.4% 38.7%
2030 34% 39%
2029 34.7% 39.4%
2028 35.3% 39.8%
2027 36.1% 40.3%
2026 36.8% 40.7%
2025 37.5% 41.2%
2024 37.8% 41.5%
2023 38.2% 42%
2022 38.3% 42.4%
2021 38.3% 42.9%
2020 38% 43.3%
2019 37.6% 43.8%
2018 37.6% 44.1%
2017 38% 44.5%
2016 38.2% 44.9%
2015 38.2% 45.2%
2014 38.2% 45.5%
2013 38% 45.7%
2012 37.7% 45.9%
2011 37.1% 46.1%
2010 36.3% 46.3%
2009 35.8% 46.4%
2008 35.6% 46.6%
2007 35.7% 46.8%
2006 36.1% 47%
2005 36.6% 47.1%
2004 37.1% 47.3%
2003 37.7% 47.4%
2002 38.2% 47.6%
2001 38.5% 47.8%
2000 38.9% 48%
1999 39.4% 48.1%
1998 39.9% 48.2%
1997 40.5% 48.2%
1996 41.1% 48.2%
1995 41.7% 48.2%
1994 42.1% 48.2%
1993 42.5% 48.2%
1992 42.5% 48.2%
1991 42.1% 48.3%
1990 41.2% 48.4%
1989 40.2% 48.5%
1988 39.2% 48.6%
1987 38.3% 48.7%
1986 37.5% 48.8%
1985 36.5% 48.9%
1984 35.7% 49%
1983 34.6% 49.1%
1982 33.2% 49.3%
1981 31.9% 49.4%
1980 30.9% 49.5%
1979 30.6% 49.5%
1978 30.9% 49.4%
1977 31.9% 49.2%
1976 33.4% 49.1%
1975 34.9% 48.8%
1974 36.4% 48.6%
1973 38.1% 48.3%
1972 39.7% 48%
1971 41.3% 47.7%
1970 42.9% 47.4%
1969 43.4% 47.2%
1968 41.3% 47.1%
1967 39.5% 47%
1966 39.4% 46.9%
1965 38.6% 46.9%
1964 37.5% 46.7%
1963 36.5% 46.5%
1962 35.7% 46.3%
1961 35.2% 46.2%
1960 34.8% 46%

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/nauru/zambia | CC BY

Children aged 0-14 make up 37.8% of the population in Nauru and 41.5% in Zambia in 2024, compared to 41.2% and 48.4% respectively in 1990.

Demographics of Nauru and Zambia compared.

Fertility rates around the globe

1x

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

GeoRank.org/birth-rate/nauru/zambia | CC BY

Maternal mortality chart: Nauru vs Zambia

Nauru
Zambia
1x
Year Maternal mortality per 100K births
Nauru Zambia
2023 273 85
2022 317 89
2021 266 140
2020 309 99
2019 267 103
2018 269 117
2017 259 141
2016 248 158
2015 253 154
2014 240 174
2013 247 213
2012 255 256
2011 260 291
2010 297 332
2009 300 406
2008 302 394
2007 303 324
2006 304 262
2005 328 264
2004 324 260
2003 323 250
2002 321 274
2001 299 306
2000 278 340
1999 277 378
1998 257 392
1997 218 403
1996 218 433
1995 219 466
1994 220 507
1993 219 532
1992 217 581
1991 216 611
1990 195 625
1989 198 635
1988 202 635
1987 206 630
1986 209 619
1985 191 596

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

GeoRank.org/birth-rate/nauru/zambia | CC BY

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 273 deaths per 100,000 live births in Nauru, compared to 85 deaths in Zambia.

Under-five mortality rates

Nauru
Zambia

Probability that a newborn baby will die before reaching age five

1x
Year Under 5 mortality rate
Nauru Zambia
2023 0.89% 4.47%
2022 0.95% 4.67%
2021 1.02% 4.92%
2020 1.11% 5.24%
2019 1.22% 5.41%
2018 1.34% 5.52%
2017 1.47% 5.61%
2016 1.61% 5.9%
2015 1.76% 6.15%
2014 1.93% 6.38%
2013 2.11% 6.72%
2012 2.29% 7.04%
2011 2.48% 7.31%
2010 2.66% 7.57%
2009 2.84% 8%
2008 3% 8.62%
2007 3.15% 9.14%
2006 3.29% 9.71%
2005 3.41% 10.5%
2004 3.53% 11.4%
2003 3.66% 12.4%
2002 3.81% 13.4%
2001 3.96% 14.4%
2000 4.13% 15.3%
1999 4.32% 15.9%
1998 4.52% 16.3%
1997 4.74% 16.7%
1996 4.97% 17%
1995 5.22% 17.3%
1994 5.49% 17.7%
1993 5.78% 17.9%
1992 6.09% 18.1%
1991 6.41% 18.1%
1990 6.74% 18.1%
1989 7.08% 17.9%
1988 7.43% 17.7%
1987 7.81% 17.3%
1986 8.2% 17%
1985 8.62% 16.6%
1984 - 16.2%
1983 - 15.9%
1982 - 15.7%
1981 - 15.6%
1980 - 15.5%
1979 - 15.4%
1978 - 15.3%
1977 - 15.3%
1976 - 15.4%
1975 - 15.5%
1974 - 15.9%
1973 - 16.3%
1972 - 16.9%
1971 - 17.4%
1970 - 17.9%
1969 - 18.3%
1968 - 18.5%
1967 - 18.7%
1966 - 18.9%
1965 - 19%
1964 - 19.2%
1963 - 19.5%
1962 - 19.8%
1961 - 20.1%
1960 - 20.5%

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

GeoRank.org/birth-rate/nauru/zambia | CC BY

The chance that a newborn baby will die before reaching age five is 0.89% in Nauru and 4.47% in Zambia. 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) (2017–2025, retrieved 2026-02-20)

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