Mianyang is the second largest prefecture-level city of Sichuan province in Southwestern China. Located in north-central Sichuan covering an ar…Mianyang is the second largest prefecture-level city of Sichuan province in Southwestern China. Located in north-central Sichuan covering an area of 20,281 square kilometres consisting of Jiangyou, a county-level city, five counties, and three urban districts. Its total population was 4,868,243 people at the 2020 Chinese census, of whom 2,232,865 live in its built-up area made of three urban districts.