Fertility & birth rates in Comoros and Guinea-Bissau

Fertility rate in Comoros vs Guinea-Bissau chart

According to the latest available data on birth rates, the fertility rate in Comoros was 3.88 children per woman in 2023, compared to 3.84 in Guinea-Bissau in 2023. The replacement level is considered to be 2.1 children per woman.

Check Comoros vs Guinea-Bissau population clock for a dynamic visualization of the changing population.

The chart below showcases historical changes in the birth rates.

Table

Year	Fertility rate
	Comoros	Guinea-Bissau
1960	6.79	5.92
1961	6.85	5.93
1962	6.9	5.94
1963	6.92	5.95
1964	6.94	5.96
1965	6.97	5.97
1966	7	5.98
1967	7.02	5.99
1968	7.05	6.01
1969	7.07	6.02
1970	7.1	6.04
1971	7.12	6.06
1972	7.14	6.08
1973	7.17	6.1
1974	7.16	6.12
1975	7.16	6.15
1976	7.16	6.19
1977	7.15	6.25
1978	7.16	6.32
1979	7.16	6.4
1980	7.15	6.49
1981	7.14	6.57
1982	7.13	6.64
1983	7.11	6.69
1984	7.07	6.73
1985	7.02	6.74
1986	6.95	6.73
1987	6.87	6.72
1988	6.76	6.69
1989	6.65	6.66
1990	6.51	6.5
1991	6.35	6.47
1992	6.19	6.44
1993	6.02	6.37
1994	5.86	6.3
1995	5.73	6.22
1996	5.63	6.14
1997	5.51	6.06
1998	5.39	5.97
1999	5.28	5.87
2000	5.23	5.79
2001	5.2	5.69
2002	5.16	5.63
2003	5.12	5.58
2004	5.07	5.5
2005	5.01	5.46
2006	4.93	5.41
2007	4.86	5.37
2008	4.81	5.27
2009	4.78	5.18
2010	4.76	5.11
2011	4.72	5.07
2012	4.65	5
2013	4.57	4.93
2014	4.49	4.79
2015	4.42	4.66
2016	4.35	4.52
2017	4.28	4.35
2018	4.21	4.24
2019	4.14	4.15
2020	4.07	4.08
2021	4	4
2022	3.94	3.91
2023	3.88	3.84
2024	3.82	3.76
2025	3.76	3.68
2026	3.71	3.62
2027	3.65	3.56
2028	3.6	3.5
2029	3.55	3.44
2030	3.5	3.37
2031	3.44	3.31
2032	3.4	3.25
2033	3.36	3.2
2034	3.31	3.15
2035	3.27	3.09
2036	3.23	3.04
2037	3.19	3
2038	3.15	2.95
2039	3.11	2.91
2040	3.07	2.87
2041	3.04	2.84
2042	3	2.8
2043	2.97	2.77
2044	2.93	2.74
2045	2.9	2.71
2046	2.87	2.67
2047	2.84	2.64
2048	2.81	2.62
2049	2.78	2.59
2050	2.76	2.56

Children 0-14 years as share of population

Table

Year	Share of people 0-14 years old
	Comoros	Guinea-Bissau
1960	41.6%	36.9%
1961	42%	37.1%
1962	42.5%	37.7%
1963	43.1%	38.4%
1964	43.7%	39.6%
1965	44.1%	41%
1966	44.5%	41.9%
1967	44.9%	42.1%
1968	45.3%	41.8%
1969	45.6%	41.9%
1970	45.8%	41.9%
1971	45.9%	41.9%
1972	46%	41.9%
1973	46.2%	41.6%
1974	46.3%	41.4%
1975	46.4%	41.8%
1976	46.6%	42.6%
1977	46.7%	43.7%
1978	46.8%	44.8%
1979	46.9%	45.1%
1980	46.9%	45%
1981	46.9%	45.3%
1982	46.9%	45.5%
1983	46.9%	45.7%
1984	46.8%	45.9%
1985	46.9%	45.9%
1986	46.9%	46%
1987	46.9%	45.9%
1988	46.9%	45.9%
1989	47%	45.8%
1990	47%	45.7%
1991	46.9%	45.5%
1992	47.1%	45.5%
1993	47.5%	45.4%
1994	47.7%	45.4%
1995	47.9%	45.3%
1996	47.9%	45.2%
1997	47.9%	45.1%
1998	47.7%	45%
1999	47.4%	44.8%
2000	47%	44.7%
2001	46.7%	44.5%
2002	46.6%	44.3%
2003	46.3%	44.2%
2004	45.7%	44%
2005	45%	43.9%
2006	44.3%	43.8%
2007	43.6%	43.6%
2008	42.9%	43.5%
2009	42.2%	43.3%
2010	41.6%	43.2%
2011	41%	43%
2012	40.5%	42.8%
2013	40.2%	42.7%
2014	40%	42.5%
2015	39.8%	42.2%
2016	39.6%	42%
2017	39.3%	41.7%
2018	38.9%	41.3%
2019	38.6%	40.9%
2020	38.3%	40.5%
2021	38%	40.1%
2022	37.7%	39.7%
2023	37.4%	39.2%
2024	37.1%	38.8%
2025	36.9%	38.3%
2026	36.6%	37.8%
2027	36.3%	37.4%
2028	36%	36.9%
2029	35.7%	36.4%
2030	35.3%	36%
2031	35%	35.5%
2032	34.7%	35.1%
2033	34.4%	34.8%
2034	34%	34.4%
2035	33.7%	34.1%
2036	33.4%	33.7%
2037	33.1%	33.4%
2038	32.8%	33%
2039	32.5%	32.7%
2040	32.2%	32.4%
2041	32%	32%
2042	31.7%	31.7%
2043	31.5%	31.4%
2044	31.2%	31%
2045	31%	30.7%
2046	30.8%	30.4%
2047	30.6%	30.1%
2048	30.3%	29.7%
2049	30.1%	29.4%
2050	29.9%	29.1%

Children aged 0-14 make up 37.1% of the population in Comoros and 38.8% in Guinea-Bissau in 2024, compared to 47% and 45.7% respectively in 1990.

Demographics of Comoros and Guinea-Bissau compared.

Natural population change in Comoros vs Guinea-Bissau by year

For the past 10 years, the annual natural population change (excluding migration) has been +2.31% in Comoros and +2.44% in Guinea-Bissau. The chart below illustrates the comparison of the absolute yearly changes resulting from births and deaths.

Table

Year	Population change due to births and deaths
	Comoros	Guinea-Bissau
1960	4,886	10,618
1961	5,027	10,756
1962	5,157	10,662
1963	5,249	9,190
1964	5,359	8,989
1965	5,465	7,789
1966	5,601	6,955
1967	5,741	6,742
1968	5,960	7,289
1969	6,189	7,857
1970	6,456	7,632
1971	6,722	8,183
1972	7,019	7,911
1973	7,328	8,430
1974	7,654	10,321
1975	7,752	11,998
1976	8,371	13,688
1977	8,750	15,484
1978	9,189	17,468
1979	9,637	19,736
1980	10,095	21,024
1981	10,569	21,611
1982	11,002	22,131
1983	11,367	22,542
1984	11,830	22,861
1985	12,202	23,116
1986	12,566	23,301
1987	12,869	23,549
1988	13,144	23,940
1989	13,374	24,286
1990	13,610	23,936
1991	13,783	24,527
1992	13,867	25,747
1993	13,667	26,943
1994	13,465	27,895
1995	13,403	29,142
1996	13,390	29,778
1997	13,254	29,792
1998	13,099	30,390
1999	13,161	30,916
2000	13,270	32,816
2001	13,598	33,461
2002	13,760	34,561
2003	14,031	35,649
2004	14,349	36,495
2005	14,810	37,347
2006	15,124	38,886
2007	15,393	40,288
2008	15,804	40,841
2009	16,315	41,950
2010	16,849	43,067
2011	17,313	44,405
2012	17,565	45,480
2013	17,776	46,472
2014	17,876	46,615
2015	17,961	46,846
2016	17,913	46,814
2017	17,798	46,318
2018	17,883	46,659
2019	17,936	47,196
2020	17,906	46,718
2021	17,645	47,242
2022	18,154	48,920
2023	18,247	49,498

Maternal mortality chart: Comoros vs Guinea-Bissau

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 179 deaths per 100,000 live births in Comoros, compared to 505 deaths in Guinea-Bissau.

Table

Year	Maternal mortality per 100K births
	Comoros	Guinea-Bissau
1985	850	1,851
1986	825	1,825
1987	811	1,796
1988	791	1,759
1989	768	1,698
1990	737	1,709
1991	704	1,663
1992	675	1,633
1993	642	1,613
1994	602	1,644
1995	571	1,556
1996	545	1,539
1997	520	1,642
1998	515	1,465
1999	486	1,461
2000	476	1,295
2001	440	1,222
2002	428	1,141
2003	400	1,069
2004	385	980
2005	373	956
2006	360	831
2007	352	792
2008	334	802
2009	320	753
2010	305	698
2011	291	678
2012	274	704
2013	260	707
2014	247	662
2015	237	631
2016	225	617
2017	219	597
2018	209	585
2019	202	598
2020	198	603
2021	215	617
2022	186	539
2023	179	505

Under-five mortality rates

The chance that a newborn baby will die before reaching age five is 3.98% in Comoros and 6.93% in Guinea-Bissau. Below is the historical data on under-five mortality rates.

Table

Year	Mortality rate before reaching 5 years of age, per 1,000 live births
	Comoros	Guinea-Bissau
1970	23.2%	-
1971	22.5%	-
1972	22%	-
1973	21.4%	-
1974	20.8%	-
1975	20.3%	-
1976	19.7%	-
1977	19.1%	-
1978	18.6%	-
1979	18%	-
1980	17.4%	-
1981	16.8%	-
1982	16.2%	-
1983	15.7%	-
1984	15.1%	-
1985	14.6%	24.4%
1986	14%	24%
1987	13.5%	23.5%
1988	13%	23.1%
1989	12.6%	22.7%
1990	12.1%	22.2%
1991	11.6%	21.8%
1992	11.1%	21.3%
1993	10.7%	20.9%
1994	10.2%	20.4%
1995	9.78%	19.9%
1996	9.37%	19.4%
1997	9%	18.9%
1998	8.63%	18.4%
1999	8.28%	17.9%
2000	7.96%	17.4%
2001	7.65%	16.8%
2002	7.36%	16.3%
2003	7.07%	15.7%
2004	6.8%	15.1%
2005	6.55%	14.5%
2006	6.31%	13.9%
2007	6.08%	13.2%
2008	5.88%	12.6%
2009	5.69%	12%
2010	5.51%	11.4%
2011	5.36%	10.9%
2012	5.21%	10.4%
2013	5.08%	9.93%
2014	4.97%	9.53%
2015	4.87%	9.18%
2016	4.76%	8.84%
2017	4.66%	8.53%
2018	4.56%	8.21%
2019	4.46%	7.91%
2020	4.35%	7.66%
2021	4.24%	7.41%
2022	4.11%	7.16%
2023	3.98%	6.93%