This is not confirmed - However, it is more than likely to be true.
Based on distances mentioned during the first novel, the area of Alagaësia seems to be about 182,466 square miles (472,585 square kilometres).
In the real world, this corresponds to slightly less than twice the size of the United Kingdom.
On a map of Alagaësia, the symbol for a Capital is a star.
On a map of Alagaësia, the symbol for a City or Large Town is a diamond.
On a map of Alagaësia, the symbol for a Small Town or Village is a circle.