List of Oceanian countries by population

Source	UN (World Population Prospects 2019)
Date	16 Oct 2021

Australia is the most populous in Oceania. Australia is the only Oceanian country with a total number of humans above ten mn. The other two countries with a total number of humans above one mn are Papua New Guinea and New Zealand. The top three countries together hold a huge 92% share of the Oceania population. The least populous country in Oceania is Nauru. Niue is the least populous region in Oceania.

Most of the Oceanian countries/territories have a very low population as none of the countries are on the list of the world's top 50 world population rankings and only two in the top 100.

Out of 23 countries/territories, the population of 20 would increase, and three countries would decrease in 2021 compared to 2020. Australia's population would increase by 288k, followed by Papua New Guinea (172k). The three decliners would be Wallis and Futuna Islands, American Samoa, and Niue.

The Solomon Islands would have the highest population growth rate of 2.49%, followed by Vanuatu (2.38%). Nine countries have a growth rate above 1%. Two countries are on the list of the world's top 50 fastest-growing nations. Wallis and Futuna Islands would have the lowest population growth rate of -1.35%, which is also the lowest in the world.

In 2000, Tuvalu was the least populous country in Oceania. Now Nauru will remain the least populous country until 2100.

Population
Growth rate (%)
Choropleth Map
Bubble Map

Population (UN)

Code	Country/Region	Population		Share (%)		Rank		Growth (2021)		Growth Rank
Code	Country/Region	2020	2021	Oceania	World	Oceania	World	Net	%	Oceania	World
AUS	Australia	25,499,881	25,788,217	59.7	0.327	1	55	288,336	1.13	6	99
NZL	New Zealand	4,822,233	4,860,642	11.2	0.0617	3	126	38,409	0.80	13	132
FJI	Fiji	896,444	902,899	2.09	0.0115	4	161	6,455	0.72	14	138
NCL	New Caledonia	285,491	288,217	0.667	0.00366	7	183	2,726	0.95	10	113
PNG	Papua New Guinea	8,947,027	9,119,005	21.1	0.116	2	97	171,978	1.92	3	52
SLB	Solomon Islands	686,878	703,995	1.63	0.00894	5	166	17,117	2.49	1	30
VUT	Vanuatu	307,150	314,464	0.728	0.00399	6	181	7,314	2.38	2	38
GUM	Guam	168,783	170,184	0.394	0.00216	10	191	1,401	0.83	12	127
KIR	Kiribati	119,446	121,388	0.281	0.00154	11	193	1,942	1.63	4	63
MHL	Marshall Islands	59,194	59,618	0.138	0.00076	14	207	424	0.72	15	139
FSM	Micronesia (Fed. States of)	115,021	116,255	0.269	0.00148	12	194	1,234	1.07	8	102
NRU	Nauru	10,834	10,873	0.0252	0.00014	21	227	39	0.36	19	174
MNP	Northern Mariana Islands	57,557	57,910	0.134	0.00074	15	208	353	0.61	16	149
PLW	Palau	18,092	18,174	0.0421	0.00023	17	222	82	0.45	18	159
ASM	American Samoa	55,197	55,103	0.127	0.00070	16	210	-94	-0.17	21	213
COK	Cook Islands	17,564	17,572	0.0407	0.00022	18	223	8	0.05	20	197
PYF	French Polynesia	280,904	282,534	0.654	0.00359	8	185	1,630	0.58	17	151
NIU	Niue	1,618	1,614	0.00373	0.00002	22	233	-4	-0.25	22	217
WSM	Samoa	198,410	200,144	0.463	0.00254	9	188	1,734	0.87	11	121
TKL	Tokelau	1,350	1,368	0.00317	0.00002	23	234	18	1.33	5	84
TON	Tonga	105,697	106,759	0.247	0.00136	13	198	1,062	1.00	9	108
TUV	Tuvalu	11,792	11,925	0.0276	0.00015	19	225	133	1.13	7	100
WLF	Wallis and Futuna Islands	11,246	11,094	0.0257	0.00014	20	226	-152	-1.35	23	235
	Oceania	42,677,809	43,219,954		0.55			542,145	1.27

Projected population (UN)

Code	Country/Region	1950		2000		2050		2100
Code	Country/Region	Population	Rank	Population	Rank	Population	Rank	Population	Rank
AUS	Australia	8,177,348	1	18,991,434	1	32,814,106	1	42,876,774	1
NZL	New Zealand	1,908,011	3	3,858,992	3	5,607,793	3	6,008,350	3
FJI	Fiji	288,994	4	811,011	4	1,071,252	5	1,066,581	5
NCL	New Caledonia	64,823	7	217,263	7	346,495	7	355,991	7
PNG	Papua New Guinea	2,002,147	2	5,847,590	2	14,204,060	2	19,782,704	2
SLB	Solomon Islands	89,793	5	412,665	5	1,290,214	4	2,409,767	4
VUT	Vanuatu	47,696	10	184,964	8	556,750	6	968,068	6
GUM	Guam	59,653	9	155,323	10	192,785	10	167,922	11
KIR	Kiribati	33,050	12	84,405	13	176,718	11	239,471	10
MHL	Marshall Islands	13,005	16	50,754	16	75,363	14	63,211	14
FSM	Micronesia (Fed. States of)	32,004	13	107,405	11	138,915	12	114,734	13
NRU	Nauru	3,430	22	10,335	20	10,804	20	5,794	20
MNP	Northern Mariana Islands	6,997	18	57,453	15	62,035	15	53,390	15
PLW	Palau	7,431	17	19,104	17	17,713	17	14,251	18
ASM	American Samoa	18,941	14	57,816	14	53,585	16	36,156	16
COK	Cook Islands	15,071	15	17,935	18	17,074	18	13,786	19
PYF	French Polynesia	60,270	8	240,681	6	310,651	8	261,545	9
NIU	Niue	4,666	21	1,902	22	1,771	22	1,726	22
WSM	Samoa	82,106	6	174,454	9	267,390	9	310,106	8
TKL	Tokelau	1,572	23	1,550	23	1,569	23	1,456	23
TON	Tonga	47,217	11	97,962	12	134,173	13	138,261	12
TUV	Tuvalu	4,676	20	9,392	21	15,980	19	20,008	17
WLF	Wallis and Futuna Islands	6,994	19	14,697	19	9,138	21	5,558	21