Most of its citizens speak Tetun and Dawan. Atambua is a multi-ethnic town with most of its citizens from Timor, Rote, Sabu, and Flores with some emigrants from East Timor and China.
Atambua is populated by a diverse group of people, primarily speaking Tetun and Dawan. The town has a multi-ethnic character, with the majority coming from Timor, Rote, Sabu, and Flores, while also having some residents from East Timor and China.