Fertility & birth rates in Brunei and Nigeria

Fertility rate in Brunei vs Nigeria by year

Chart Table

Brunei

Nigeria

1x

Year	Fertility rate
	Brunei	Nigeria
2023	1.75	4.48
2022	1.76	4.55
2021	1.78	4.64
2020	1.8	4.7
2019	1.82	4.86
2018	1.85	5.02
2017	1.88	5.18
2016	1.92	5.34
2015	1.95	5.5
2014	1.97	5.62
2013	1.98	5.69
2012	1.97	5.8
2011	1.96	5.89
2010	1.94	5.95
2009	1.92	5.99
2008	1.92	6.02
2007	1.93	6.03
2006	1.97	6.05
2005	2.02	6.06
2004	2.1	6.09
2003	2.19	6.1
2002	2.26	6.12
2001	2.34	6.13
2000	2.4	6.12
1999	2.46	6.08
1998	2.53	6.07
1997	2.6	6.14
1996	2.68	6.22
1995	2.79	6.27
1994	2.9	6.32
1993	3.01	6.35
1992	3.11	6.39
1991	3.21	6.43
1990	3.29	6.46
1989	3.36	6.49
1988	3.44	6.5
1987	3.49	6.5
1986	3.55	6.56
1985	3.61	6.62
1984	3.68	6.7
1983	3.75	6.78
1982	3.84	6.8
1981	3.94	6.82
1980	4.07	6.85
1979	4.22	6.89
1978	4.39	6.92
1977	4.58	6.86
1976	4.78	6.81
1975	4.99	6.77
1974	5.18	6.7
1973	5.36	6.63
1972	5.5	6.58
1971	5.62	6.53
1970	5.8	6.47
1969	6.01	6.44
1968	6.2	6.42
1967	6.37	6.4
1966	6.51	6.39
1965	6.65	6.37
1964	6.77	6.36
1963	6.89	6.35
1962	7.03	6.36
1961	7.19	6.35
1960	7.32	6.36

According to the latest available data on birth rates, the fertility rate in Brunei was 1.75 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 Brunei vs Nigeria population clock for a dynamic visualization of the changing population.

Natural population change by year

Chart Table

Brunei

Nigeria

1x

Year	Natural population change
	Brunei	Nigeria
2023	3,837	4,834,309
2022	3,319	4,739,502
2021	3,985	4,641,562
2020	4,188	4,525,164
2019	4,335	4,609,941
2018	4,502	4,659,898
2017	4,685	4,706,183
2016	4,876	4,761,594
2015	5,060	4,823,045
2014	5,206	4,862,319
2013	5,302	4,811,751
2012	5,349	4,774,508
2011	5,242	4,728,363
2010	5,003	4,629,173
2009	4,789	4,528,149
2008	4,624	4,412,976
2007	4,521	4,265,428
2006	4,590	4,135,703
2005	4,703	4,013,788
2004	4,874	3,877,376
2003	5,034	3,751,120
2002	5,169	3,606,814
2001	5,275	3,478,370
2000	5,331	3,343,196
1999	5,388	3,155,425
1998	5,466	3,003,946
1997	5,518	2,936,500
1996	5,606	2,882,205
1995	5,750	2,830,771
1994	5,907	2,735,198
1993	6,045	2,673,675
1992	6,169	2,596,173
1991	6,259	2,527,807
1990	6,265	2,491,928
1989	6,202	2,452,324
1988	6,135	2,376,419
1987	6,017	2,322,397
1986	5,826	2,295,003
1985	5,620	2,289,784
1984	5,373	2,278,060
1983	5,138	2,292,089
1982	4,931	2,233,401
1981	4,839	2,179,884
1980	4,775	2,121,618
1979	4,717	2,074,807
1978	4,668	2,019,621
1977	4,594	1,923,917
1976	4,518	1,827,289
1975	4,431	1,718,623
1974	4,334	1,624,813
1973	4,216	1,525,485
1972	4,085	1,448,928
1971	3,880	1,373,896
1970	3,694	1,295,507
1969	3,618	1,213,484
1968	3,551	1,168,254
1967	3,477	1,082,884
1966	3,403	1,095,582
1965	3,326	1,061,840
1964	3,264	1,028,272
1963	3,195	995,116
1962	3,128	966,452
1961	3,175	932,111
1960	3,168	901,301

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 +0.84% in Brunei and +2.12% in Nigeria.

For the past 10 years, the annual natural population change has been +1.01% in Brunei and +2.29% in Nigeria.

Birth rate in Brunei vs Nigeria by year

Chart Table

Brunei

Nigeria

Annual births per 1,000 people

1x

Year	Annual births per 1,000 people
	Brunei	Nigeria
2023	13.6	33
2022	13.8	33.2
2021	14.1	33.5
2020	14.3	33.7
2019	14.6	34.7
2018	14.9	35.7
2017	15.3	36.7
2016	15.8	37.8
2015	16.2	39
2014	16.6	39.9
2013	16.9	40.4
2012	17.1	41.1
2011	17	41.8
2010	16.6	42.1
2009	16.2	42.5
2008	16	42.8
2007	15.9	42.9
2006	16.3	43.2
2005	16.7	43.4
2004	17.4	43.5
2003	18	43.7
2002	18.7	43.8
2001	19.3	43.9
2000	19.8	43.9
1999	20.4	43.4
1998	21	43.2
1997	21.6	43.5
1996	22.4	43.9
1995	23.4	44.1
1994	24.5	44
1993	25.6	44.1
1992	26.7	44.2
1991	27.7	44.3
1990	28.5	44.5
1989	29	44.8
1988	29.5	44.7
1987	29.8	44.8
1986	29.9	45.3
1985	29.9	45.9
1984	29.7	46.5
1983	29.4	47.5
1982	29.3	47.5
1981	29.7	47.9
1980	30.3	48.3
1979	30.9	48.8
1978	31.6	49.3
1977	32.2	49.1
1976	32.8	49
1975	33.4	49
1974	34	48.7
1973	34.5	48.2
1972	34.9	48
1971	34.6	47.8
1970	34.3	47.4
1969	34.7	47.3
1968	35.6	47.2
1967	36.5	47.1
1966	37.5	47
1965	38.6	46.9
1964	39.7	46.9
1963	41	46.8
1962	42.8	46.7
1961	45	46.6
1960	47.2	46.5

The latest reported birth rate per 1,000 people in 2023 was 13.6 in Brunei and 33 in Nigeria, compared with 47.2 and 46.5, respectively, in 1960.

Children 0-14 years as share of population

Chart Table

Brunei

Factual

UN forecast

Nigeria

Factual

UN forecast

1x

Year	Young
	Brunei	Nigeria
2100	13.8%	20.4%
2099	13.9%	20.5%
2098	13.9%	20.6%
2097	13.9%	20.7%
2096	14%	20.8%
2095	14%	20.9%
2094	14.1%	21%
2093	14.1%	21.1%
2092	14.1%	21.2%
2091	14.1%	21.4%
2090	14.2%	21.5%
2089	14.2%	21.6%
2088	14.2%	21.8%
2087	14.2%	21.9%
2086	14.2%	22.1%
2085	14.2%	22.2%
2084	14.2%	22.4%
2083	14.2%	22.6%
2082	14.2%	22.7%
2081	14.2%	22.9%
2080	14.2%	23.1%
2079	14.2%	23.3%
2078	14.2%	23.5%
2077	14.2%	23.7%
2076	14.2%	23.9%
2075	14.2%	24.1%
2074	14.3%	24.3%
2073	14.3%	24.5%
2072	14.3%	24.7%
2071	14.4%	25%
2070	14.4%	25.2%
2069	14.5%	25.4%
2068	14.6%	25.7%
2067	14.6%	25.9%
2066	14.7%	26.1%
2065	14.8%	26.4%
2064	14.8%	26.6%
2063	14.9%	26.9%
2062	15%	27.2%
2061	15%	27.4%
2060	15.1%	27.7%
2059	15.2%	28%
2058	15.2%	28.3%
2057	15.3%	28.6%
2056	15.3%	29%
2055	15.4%	29.3%
2054	15.4%	29.6%
2053	15.4%	30%
2052	15.5%	30.3%
2051	15.5%	30.7%
2050	15.6%	31.1%
2049	15.6%	31.5%
2048	15.7%	31.8%
2047	15.8%	32.2%
2046	15.9%	32.6%
2045	16%	32.9%
2044	16.1%	33.3%
2043	16.2%	33.7%
2042	16.3%	34%
2041	16.5%	34.4%
2040	16.7%	34.7%
2039	16.9%	35%
2038	17.1%	35.4%
2037	17.4%	35.7%
2036	17.6%	36%
2035	17.9%	36.3%
2034	18.1%	36.6%
2033	18.4%	37%
2032	18.7%	37.4%
2031	19%	37.8%
2030	19.3%	38.3%
2029	19.6%	38.8%
2028	20%	39.3%
2027	20.3%	39.8%
2026	20.5%	40.3%
2025	20.7%	40.8%
2024	20.8%	41%
2023	21%	41.5%
2022	21.2%	42%
2021	21.3%	42.4%
2020	21.6%	42.8%
2019	21.9%	43.2%
2018	22.3%	43.6%
2017	22.7%	43.9%
2016	23.1%	44.1%
2015	23.6%	44.3%
2014	24%	44.4%
2013	24.5%	44.5%
2012	24.9%	44.5%
2011	25.2%	44.5%
2010	25.3%	44.4%
2009	25.4%	44.4%
2008	25.5%	44.3%
2007	25.5%	44.2%
2006	25.9%	44.1%
2005	26.7%	44%
2004	27.4%	43.9%
2003	28.1%	43.8%
2002	28.9%	43.8%
2001	29.6%	43.7%
2000	30.3%	43.7%
1999	31%	43.8%
1998	31.6%	43.9%
1997	32.2%	44.1%
1996	32.7%	44.2%
1995	33.3%	44.4%
1994	33.7%	44.6%
1993	34.1%	44.8%
1992	34.3%	45%
1991	34.4%	45.2%
1990	34.4%	45.3%
1989	34.6%	45.5%
1988	34.7%	45.5%
1987	34.9%	45.6%
1986	35.2%	45.6%
1985	35.7%	45.5%
1984	36.3%	45.4%
1983	36.9%	45.2%
1982	37.6%	45%
1981	38.1%	44.8%
1980	38.5%	44.6%
1979	38.9%	44.4%
1978	39.3%	44.2%
1977	39.9%	43.9%
1976	40.6%	43.7%
1975	41.3%	43.4%
1974	42%	43.2%
1973	42.6%	43%
1972	43%	42.8%
1971	43.3%	42.5%
1970	43.6%	42.4%
1969	44.2%	42.2%
1968	44.8%	42%
1967	45.4%	41.8%
1966	46%	41.7%
1965	46.5%	41.5%
1964	46.6%	41.4%
1963	46.6%	41.2%
1962	46.1%	41.1%
1961	45.2%	41.1%
1960	44.1%	41.1%

Children aged 0-14 make up 20.8% of the population in Brunei and 41% in Nigeria in 2024, compared to 34.4% and 45.3% respectively in 1990.

Demographics of Brunei and Nigeria compared.

Maternal mortality chart: Brunei vs Nigeria

Chart Table

Brunei

Nigeria

1x

Year	Maternal mortality per 100K births
	Brunei	Nigeria
2023	36	993
2022	88	1,016
2021	44	1,046
2020	39	1,065
2019	38	1,091
2018	39	1,118
2017	39	1,142
2016	39	1,155
2015	39	1,168
2014	40	1,155
2013	40	1,146
2012	40	1,124
2011	40	1,108
2010	40	1,094
2009	40	1,088
2008	40	1,081
2007	41	1,063
2006	42	1,067
2005	43	1,060
2004	44	1,075
2003	45	1,090
2002	46	1,117
2001	46	1,130
2000	48	1,136
1999	50	1,165
1998	51	1,189
1997	52	1,184
1996	54	1,185
1995	55	1,186
1994	58	1,193
1993	59	1,200
1992	62	1,246
1991	65	1,282
1990	68	1,285
1989	71	1,304
1988	73	1,332
1987	75	1,351
1986	78	1,363
1985	79	1,344

The maternal mortality rate, which is the probability of dying during childbirth or within 42 days of pregnancy termination, is 36 deaths per 100,000 live births in Brunei, compared to 993 deaths in Nigeria.

Under-five mortality rates

Chart Table

Brunei

Nigeria

Probability that a newborn baby will die before reaching age five

1x

Year	Under 5 mortality rate
	Brunei	Nigeria
2023	0.94%	10.5%
2022	0.95%	10.8%
2021	0.96%	11.1%
2020	0.97%	11.4%
2019	0.98%	11.8%
2018	0.99%	12%
2017	1%	12.3%
2016	1%	12.5%
2015	1%	12.6%
2014	1%	12.8%
2013	0.99%	12.9%
2012	0.99%	13.1%
2011	0.98%	13.3%
2010	0.97%	13.5%
2009	0.96%	13.8%
2008	0.96%	14.1%
2007	0.95%	14.5%
2006	0.95%	15%
2005	0.95%	15.5%
2004	0.95%	16%
2003	0.96%	16.5%
2002	0.98%	17.1%
2001	1%	17.7%
2000	1.03%	18.2%
1999	1.07%	18.8%
1998	1.1%	19.3%
1997	1.15%	19.7%
1996	1.19%	20.1%
1995	1.23%	20.4%
1994	1.27%	20.6%
1993	1.3%	20.7%
1992	1.31%	20.8%
1991	1.32%	20.9%
1990	1.33%	21%
1989	1.35%	21%
1988	1.38%	21%
1987	1.42%	20.9%
1986	1.48%	20.9%
1985	1.57%	20.8%
1984	1.67%	20.7%
1983	1.79%	20.7%
1982	1.93%	20.8%
1981	2.09%	21%
1980	2.28%	21.3%
1979	2.48%	21.8%
1978	2.71%	22.3%
1977	2.95%	22.9%
1976	3.21%	23.6%
1975	3.49%	24.4%
1974	3.77%	25.2%
1973	4.06%	26.1%
1972	4.35%	26.9%
1971	4.64%	27.7%
1970	4.91%	28.5%
1969	5.16%	29.3%
1968	5.42%	30%
1967	5.69%	30.7%
1966	5.98%	31.3%
1965	6.32%	32%
1964	6.7%	32.7%
1963	7.15%	-
1962	7.66%	-
1961	8.24%	-
1960	8.9%	-

The chance that a newborn baby will die before reaching age five is 0.94% in Brunei and 10.5% in Nigeria. Above is a chart with historical data on under-five mortality rates.