Tucumán is divided politically in 17 departments. Their limits are: Salta, to the north Santiago del Estero to the east and Catamarca, to the south and the west. it is located among the parallel ones 26º 05' and 28º 01´ of south latitude and the meridians 64º 28' and 66º 09´ of longitude west.

The province of Tucumán is located in the heart of the Argentinean northwest.

The surface of Tucumán is that is of 22.524 km2 4,8% of the region and 0,8% of the country. In 2001 the total population belonged to 1.338.523 inhabitants: 657.542 males and 680.981 women.

The provincial capital is San Miguel del Tucumán and the main cities are Tafí Viejo, Monteros and Concepción.