The province of Chieti is a province in the Abruzzo region of Italy. Its provincial capital is the city Chieti, which has a population of 50,770 inhabitants. The province has a total population of 387,649 inhabitants as of 2017 and spans an area of 2,599.58 square kilometres (1,003.70 sq mi). It is divided into 104 comuni (comune) and the provincial president is Mario Pupillo.