Dzongkha is an official language of which country?

Bhutan, officially known as the Kingdom of Bhutan, is a landlocked country in the Eastern Himalayas. It is bordered by China to the north and India to the south, east and west. Nepal and Bangladesh are located in proximity to Bhutan but do not share a land border. The country has a population of over 754,000 and a territory of 38,394 square kilometers (14,824 sq mi) which ranks 133rd in terms of land area, and 160th in population. Bhutan is a constitutional monarchy with Vajrayana Buddhism as the state religion.

Dzongkha is a Sino-Tibetan language spoken by over half a million people in Bhutan; it is the country's sole official and national language. The Tibetan script is used to write Dzongkha. Dzongkha is a tone language and has two register tones: high and low.

The word "dzongkha" means "the language of the palace". As of 2013, Dzongkha had 171,080 native speakers and about 640,000 total speakers. Dzongkha was declared the national language of Bhutan in 1971. Dzongkha study is mandatory in all schools.