FACTBOX-Key facts about Armenia

(Reuters) - Armenians voted on Tuesday in a presidential election that Prime Minister Serzh Sarksyan, given credit for swift economic growth and rising living standards, is expected to win.

Here are some key facts about the ex-Soviet republic in the Caucasus mountains.

POPULATION - 3.22 million as of January 2007, according to the National Statistics Service.

ETHNIC COMPOSITION - More than 97 percent of the population is Armenian. There are small minorities of Russians, Kurds and Greeks.

GEOGRAPHY - Landlocked, bordering Azerbaijan, Georgia, Iran and Turkey, and with a total area of 29,800 square km.

CAPITAL - Yerevan.

LANGUAGE - Armenian is the official language. Russian and Kurdish are also spoken. Armenian belongs to a branch of the Indo-European family of languages with a unique 39-character script.

RELIGION - Most Armenians belong to the Armenian Apostolic Church, an ancient independent branch of Christianity. Armenia was the first state in the world to adopt Christianity as its state religion, in 301.

ECONOMY - Armenia's Gross Domestic Product grew 13.7 percent in 2007, and annual inflation was 6.6 percent. Armenia joined the World Trade Organisation (WTO) in January 2003. Its national currency is the dram.