Why Greenland is an Island and Australia is a Continent

Emily Upton 24
australiaToday I found out why Greenland is an island and Australia is a continent.

There are several different ways of thinking about how many continents there are, with models ranging from 4 to 7 continents. However, in most English speaking countries, as well as other nations around the world, the 7-continent model is taught. Using this model, the continents of the world in order of size (descending) are: Asia, Africa, North America, South America, Antarctica, Europe, and Australia.

One of the biggest differences between Australia and Greenland, other than their obvious climate differences, is population. Australia has over 22 million inhabitants, making it the 55th most populous nation in the world. Greenland, on the other hand, has just over 57 thousand inhabitants, making it the 205th most populous nation in the world. However, if population determined continental status, Antarctica would not be considered a continent, either.

Australia and Greenland have quite a few features in common. People living in both countries largely live along the coast due to nearly uninhabitable land covering each of the countries—in Greenland, the natural barrier is an ice cap, while in Australia it’s a desert. Australia is an island in the South Pacific, roughly 7.75 million square kilometres (about 3 million square miles) and the sixth largest country in the world. Greenland is an island that sits between the Arctic Ocean and the North Atlantic Ocean. It is just over 2.16 million square kilometres (834K square miles), making it the twelfth largest country in the world. Greenland is the largest island after Australia—so why isn’t it considered a continent, too?

It turns out that there are no official conditions that each continent has to meet in order to be considered a continent, which explains why there are so many different models of thinking when it comes to how many continents there are. However, there are several largely accepted factors that classify different regions of the world as continents. These factors include tectonic independence from other continents, unique flora and fauna, cultural uniqueness, and local belief in continental status.

Looking at Australia and Greenland, Australia meets several of these conditions. Australia rests on its own tectonic plate called the Australian Plate. It certainly has its own unique flora and fauna, with native animals like kangaroos, wombats, and Tasmanian Devils unlike any others in the world. Australia’s historic aboriginal culture is also somewhat unique. Currently, the country is more “Western” in ideology than most other countries in the South Pacific region, making it a unique culture in its area. Lastly, the locals consider themselves to live on both an island and a continent, fulfilling the last of the criteria.

Greenland, on the other hand, sits on the North American tectonic plate. It is not geologically separate from Canada, the United States, and Mexico. Although Greenland has fifteen unique species of plants, its fauna, such as reindeer, polar bears, and arctic foxes, can also be found elsewhere, such as in Canada. While Greenland does have its own culture, it is considered part of the larger North American arctic culture. Finally, Greenlanders do not, for the most part, believe that they live on a continent. They consider themselves islanders.

These definitions are shaky, however. Looking at a map of tectonic plates, you can see that Europe sits on the Eurasian Tectonic Plate along with most of Asia. Only cultural difference and a feeling of separateness defines it as a separate continent. Similarly, India has its own tectonic plate as well—but in this case, a sense of similar culture and flora and fauna makes India part of Asia rather than its own continent.

It seems that to be a continent, an area must fulfill most of the unofficial criteria above if it doesn’t fulfill it all. In this case, Australia succeeds where Greenland does not, and a line is drawn between what makes the smallest continent and the largest island.

If you liked this article, you might also like:

Bonus Facts:

  • In the four-continent model, the continents are the America, Antarctica, Africa-Eurasia, and Australia.
  • While it is well known that Australia is part of Britain’s Commonwealth, it might come as a surprise to learn that Greenland is officially part of Denmark, but rules itself autonomously.
  • Only 410,000 square kilometres of Greenland are not covered by ice. The Australian deserts cover over a million square kilometres of the country.
  • Australia is the only continent without glaciers.
  • While Australia is significantly larger than Greenland, Greenland often appears larger on maps because of the distortion caused by proximity to the North Pole.  A similar effect can be observed with Alaska.
  • Dorothy Parker, a writer, is often credited with saying, “I once was the toast between two continents: Greenland and Australia.” However, as Greenland is not a continent, it is believed that the words have been twisted with time, and that originally she mentioned “Asia and Africa” instead.
  • 84% of Greenlanders live in urban areas, while 89% of Australians live in urban areas.
  • Greenland has only one major city: its capital, Nuuk.
  • The ethnic makeup of the two countries is polarizing: Greenland’s population is 89% Inuit and 11% Danish, while Australia’s population is 92% white, 7% Asian, and only 1% Aboriginal.
  • There are nearly 6 migrants leaving Greenland per 1000 people. In Australia, there are nearly 6 migrants entering the country per 1000 people.
  • The word “continental” often excludes islands. “Continental Europe” excludes Great Britain, Ireland, and Iceland; “Continental United States” excludes Hawaii (and sometimes Alaska); and “Continental Australia” would exclude the state of Tasmania.

[Earth Image via Shutterstock]

Expand for References

Share the
Print Friendly
Enjoy this article? If so, get our FREE wildly popular Daily Knowledge and Weekly Wrap newsletters:

Subscribe Me To:  | 
Check Out Our New Book!»


  1. Yer Pal May 1, 2013 at 3:17 pm - Reply

    “Australia is the only continent without glaciers.”
    Where are the African glaciers?

    • Emily Upton
      Emily Upton May 2, 2013 at 5:20 pm - Reply

      Yer Pal, check out this article on the “melting African glaciers.” The Ruwenzori Mountain glaciers just above the equator in Africa are a source of water for the Nile River. Wikipedia also lists quite a few others in Kenya and Tanzania (at Mount Kilimanjaro).


      • Yer Pal October 25, 2013 at 7:01 am - Reply

        Hi Emily! I read your citation link! Sounds like snow-capped mountains… not really glaciers in the traditional sense. But still… I learned something new! Thank you!

        • Andy November 4, 2013 at 11:48 pm - Reply

          Of course Africa has glaciers, dozens in fact….no they are not merely snow covered peaks.

  2. steven September 3, 2013 at 10:28 pm - Reply

    Sadly, Australia is and has been just an island for awhile now. It may be the largest land mass of, but still only part of OCEANIA. (Some continue to use Australia and some Australasia)

  3. mad.madrasi October 3, 2013 at 5:47 am - Reply

    “Similarly, India has its own tectonic plate as well—but in this case, a sense of similar culture and flora and fauna makes India part of Asia rather than its own continent.”

    What similar culture? And with Whom? Whatever, we think of (& often refer to) India as ‘sub-continent’.

    • gild December 15, 2014 at 12:24 pm - Reply

      India has kind of similar culture with pakistan ,srilanka,nepal,bangladesh…so all of them together are called the indian subcontinent.

  4. Jagdosh December 7, 2013 at 1:58 am - Reply

    Hi… I want to know how the African desert created spy sahara

  5. sed September 21, 2014 at 4:40 pm - Reply

    Uhhhhh… also the fact that australia is more than 3 times as big as Greenland, you do realize the mercator projection is very distorted

    Greenland LOOKS like it’s the same size as africa, but africa is 14 times bigger.

    Greenland isn’t big, the map distorts it.

  6. sed September 21, 2014 at 4:41 pm - Reply

    And also australia shares a tectonic plate with india, it does NOT have it’s own plate

  7. Courts October 7, 2014 at 8:47 am - Reply

    “Greenland is the largest island after Australia—so why isn’t it considered a continent, too?”

    Australia is not an island. Greenland is the largest island in the world as indicated by the Encyclopedia Britannica and other sources. Also the definition of an island is a land mass surrounded by water AND not a continent. If Australia is an island so would be Antartica.

  8. Manetta October 18, 2014 at 8:01 pm - Reply

    So Greenland has a small population but so does Antarctica. Can you even say that Antarctica has a population?

    • Joe December 8, 2014 at 12:15 am - Reply

      Sort of when there are researchers living on Antarctica.

  9. m dann December 5, 2014 at 2:38 am - Reply

    Australia is the biggest piece of land in the world surrounded by water end of story

  10. Joe December 8, 2014 at 12:12 am - Reply

    Of course Australia is going to be more Western in ideology if they were ruled by Britain and ended up having thousands of immigrants come over and discriminating on the aboriginals. That is the only reason it be more unique in culture because they do not have the Pacific Polynesian type of culture and making English official. So that I think is the worst reason why it is a continent and not just considered an island of Asia for example. If Denmark had killed off the Inuits and only Danish were living, would it be considered part of Europe then? I assume its kind of Western in ideology too for being part of Denmark.

  11. Ned December 10, 2014 at 7:02 pm - Reply

    An extremely well written, obviously well researched, and enjoyable article. My compliments to Emily Upton. I am a 60 year young public school teacher of 36 years and I have wondered about this many times; you thoroughly explained it .

  12. gild December 15, 2014 at 12:27 pm - Reply

    The reason why australia is a continent is also becos it has a varied climatic zone….it has a medditeranean type of climate too.

  13. willo January 18, 2015 at 4:29 am - Reply

    australia is referred to as a continent and an island, not just a continent

  14. Robo January 27, 2015 at 9:46 am - Reply

    Australia – is continent, because it is distinct landmass – that’s ONLY what continent is – sticking “oceania” in suddenly, as a “continent” breaks convention regards every other definition of a continent and therefore fails outright!

  15. DatStankyHoe March 3, 2015 at 6:22 pm - Reply

    About the Europe point, the Eastern Border of Europe is the Ural mountain range. So it’s not like it doesn’t fit a physical boundary qualifier

Leave A Response »