 In the mid-6th century, its territory held 834,211 people living in 177,500 households.Under the Sui, the seat of Boling Commandery at present-day Anping was renamed "Gaoyang".In 607, Dingzhou then became the eponymous seat of a new Boling commandery and retained that name and status under the Tang until it returned to the name Dingzhou between 621 and 742 and again after 758.