Oceania — Countries of the World

Oceania encompasses 18 countries and territories across the Pacific Ocean, with a total population of about 45 million. Australia and New Zealand have demographics similar to European countries with low fertility and reliance on immigration. Pacific Island nations face unique challenges including small populations, geographic isolation, and increasing vulnerability to climate change and rising sea levels.

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Showing 18 countries — Oceania

#	Country	Population	Density	Fertility Rate (TFR)	Life Expectancy	Median Age	Growth Rate
1	American Samoa Oceania	46,765	237.6/km²	2.29	72.9	32.7	-1.60%
2	Australia Oceania	27,196,812	3.5/km²	1.50	83.1	40.0	1.99%
3	Fiji Oceania	928,784	50.6/km²	2.28	67.3	32.2	0.50%
4	French Polynesia Oceania	281,807	81.0/km²	1.50	84.1	37.2	0.24%
5	Guam Oceania	167,777	308.3/km²	2.78	77.2	34.6	0.76%
6	Kiribati Oceania	134,518	163.6/km²	3.15	66.5	27.5	1.49%
7	Marshall Islands Oceania	37,548	215.7/km²	2.92	66.9	27.7	-3.35%
8	Micronesia (Fed. States of) Oceania	113,160	160.9/km²	2.75	67.2	29.6	0.47%
9	Nauru Oceania	11,947	593.8/km²	3.33	62.1	25.3	0.60%
10	New Caledonia Oceania	292,639	15.9/km²	1.98	78.8	36.3	0.95%
11	New Zealand Oceania	5,287,500	19.7/km²	1.56	83.0	39.6	1.67%
12	Palau Oceania	17,695	38.5/km²	1.91	69.3	37.5	-0.18%
13	Papua New Guinea Oceania	10,576,502	22.9/km²	3.10	66.1	28.1	1.78%
14	Samoa Oceania	218,019	77.9/km²	3.83	71.7	25.4	0.62%
15	Solomon Islands Oceania	819,198	28.6/km²	3.56	70.5	26.0	2.37%
16	Tonga Oceania	104,175	145.3/km²	3.13	72.9	27.6	-0.40%
17	Tuvalu Oceania	9,646	327.2/km²	3.21	67.1	29.1	-1.75%
18	Vanuatu Oceania	327,777	26.3/km²	3.60	71.5	25.2	2.27%