Chartres is the prefecture of the Eure-et-Loir department in the Centre-Val de Loire region in France. It is located about 90 km southwest of Pari…Chartres is the prefecture of the Eure-et-Loir department in the Centre-Val de Loire region in France. It is located about 90 km southwest of Paris. At the 2019 census, there were 170,763 inhabitants in the metropolitan area of Chartres, 38,534 of whom lived in the city of Chartres proper.