Buddhism.
Bhutan's constitution guarrantees freedom of religion for all citizens, but the state religion is Vajrayna Buddhism. A quater of the population is Hindu as well.
Buddhism
All the Bhutanese those who hold the citizenship of Bhutan since 1958 are the citizen of Bhutan. Drukpa and Nepali lives in Bhutan. Hindu and Budda is only the religion in Bhutan.
Most Of Bhutan's live in the Northwest part of Bhutan and the Bhutan's still currently live in valleys! -Jenny
Tibetan Buddhism is state religion of Bhutan. More than 95% are Buddhisst and rest are ethnic Nepalese who migrated in late 90s practicing Hindu.
Buddhism is the religion they have in common.
Most people in Bhutan (60%) are farmers.
Most people in Bhutan get their water from either a house tap or occasionally a village tap.
The religion is Buddhism. Specifically Tibetan Buddhism. less than 10% are Hindu of Nepalese ethnic who migrated in late 90s.
None. The only countries I know of whose official state religion is Buddhism is Cambodia and Bhutan.
As of 2017, about 20% of the population of Bhutan speaks Dzongkha. Even with such small numbers, it is the most widely spoken language in Bhutan.