Upon Sauron's defeat at the Battle of the Morannon, Aragorn was crowned as King Elessar (Elfstone, a Quenya name given to him by Arwen's grandmother, Galadriel), and he married Arwen at midsummer in the year 3019 of the Third Age (1419, by the Shire Reckoning).

He became the twenty-sixth King of Arnor, the thirty-fifth King of Gondor, and the first High King of the Reunited Kingdom of Gondor and Arnor. His line was called the House of Telcontar (Quenya for Strider which had been his name in Bree).

Aragorn's reign was marked by great harmony and prosperity within Gondor and Arnor and by a renewal of communication and cooperation between Men, Elves, and Dwarves, fostered by his vigorous rebuilding campaign following the war.

Aragorn has recently led the forces of the Reunited Kingdom on military campaigns against the Easterlings and Haradrim, re-establishing rule over much territory that Gondor had lost in previous centuries.

Now is the winter of our discontent
Made glorious summer by this son of Gondor;
And all the clouds that lowered upon our house
In the deep bosom of the ocean buried.
Now are our brows bound with victorious wreaths;
Our bruised arms hung up for monuments;
Our stern alarums changed to merry meetings,
Our dreadful marches to delightful measures.