Chaco Province

Chaco (Spanish pronunciation:; Wichi: To-kós-wet), officially the Province of Chaco (Spanish: Provincia del Chaco) is one of the 23 provinces of Argentina. Its capital and largest city is Resistencia. It is located in the north-east of the country.

It is bordered by Salta and Santiago del Estero to the west, Formosa to the north, Corrientes to the east, and Santa Fe to the south. It also has an international border with the Paraguayandepartment of Ñeembucú. With an area of 99,633 km (38,469 sq mi) and a population of 1,142,963 as of 2022, it is the twelfth most extensive, and the eleventh most populated, of Argentina's provinces.

In 2010, Chaco became the second province in Argentina to adopt more than one official language. These are the Kom, Moqoit and Wichí languages, spoken by the Toba, Mocovi and Wichí peoples respectively. Chaco has historically been among Argentina's poorest provinces, and currently ranks last both by GDP per capita and Human Development Index.