No country -- or county -- 'owns' any part of Antarctica. All land south of 60 degrees S is governed by the Antarctic Treaty. Nation-states have claimed territory on the continent, and some claims overlap. The treaty, however, holds all existing claims in abeyance and prohibits future claims.
Antarctica has no countries.
There are no counties, cities, states or countries in Antarctica.
Antarctica is its own continent and is not part of the US.
No part.
There are no counties that border Antarctica -- it is surrounded by the Southern Ocean.
There are no counties in Antarctica, no cities, no states and no countries. It is governed by the Antarctic Treaty.
Antarctica has no counties.
No. Antarctica is an international territory.
No country owns any part of Antarctica.
Australia claims a slice of Antarctica, but does not own it. There are other claims, and no country with claims owns any part of Antarctica.
00-Zero
Australia does not own any part of Antarctica. No other country owns any part of Antarctica. However, Australia does have a claim on 42% of the Antarctic, which was transferred to Australia in 1935.