Coastline Length by Country (Oceania)
Australia has the longest coastline in Oceania — 25,760 km, ahead of New Zealand (15,134 km) and Micronesia (6,112 km). All 19 countries ranked with the latest available data.
Top 19 Countries
| # | Country | Share | Coastline |
|---|---|---|---|
| 1 | 🇦🇺 Australia | 36.4% | 25,760 km |
| 2 | 🇳🇿 New Zealand | 21.4% | 15,134 km |
| 3 | 🇫🇲 Micronesia | 8.6% | 6,112 km |
| 4 | 🇸🇧 Solomon Islands | 7.5% | 5,313 km |
| 5 | 🇵🇬 Papua New Guinea | 7.3% | 5,152 km |
| 6 | 🇻🇺 Vanuatu | 3.6% | 2,528 km |
| 7 | 🇵🇫 French Polynesia | 3.6% | 2,525 km |
| 8 | 🇳🇨 New Caledonia | 3.2% | 2,254 km |
| 9 | 🇵🇼 Palau | 2.1% | 1,519 km |
| 10 | 🇰🇮 Kiribati | 1.6% | 1,143 km |
| 11 | 🇫🇯 Fiji | 1.6% | 1,129 km |
| 12 | 🇮🇴 British Indian Ocean Territory | 1.0% | 698 km |
| 13 | 🇹🇴 Tonga | 0.6% | 419 km |
| 14 | 🇼🇸 Samoa | 0.6% | 403 km |
| 15 | 🇲🇭 Marshall Islands | 0.5% | 370.4 km |
| 16 | 🇬🇺 Guam | 0.2% | 125 km |
| 17 | 🇦🇸 American Samoa | 0.2% | 116 km |
| 18 | 🇳🇷 Nauru | 30 km | |
| 19 | 🇹🇻 Tuvalu | 24 km |
Concentration
🇦🇺 36.4%🇳🇿 21.4%🇫🇲 8.6%🇸🇧 7.5%🇵🇬 7.3%Rest 18.8%
The top 10 countries hold 95.3% of the regional total
Statistic
About this Ranking
Coastline length determines maritime defense requirements and naval force structure. Nations with extensive coastlines must invest in larger navies and coast guards to protect territorial waters, exclusive economic zones, and vital shipping lanes.
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