Dzongkha is the national language of Bhutan, with around 600,000 speakers. It's a Tibetic language closely related to Tibetan, written in a variant of Tibetan script (Uchen). The US Dzongkha-speaking community is small — most Bhutanese-Americans actually speak Nepali (Bhutanese-Nepali refugees), not Dzongkha — so Dzongkha translation requests are uncommon and typically tied to specific civil-document needs for Bhutanese nationals. The vast majority of US Bhutanese paperwork is therefore Nepali rather than Dzongkha.