According to the postal code database, the postal code of Changqing District of Jinan City is 250300, the first two digits of postal code 25 represent Jinan City of Shandong Province, the third and fourth digits 03 represent Changqing District, and the last two digits 00 represent the specific delivery area.

Changqing District is named after Qi Great Wall and Qingshui. Sui, located in Changqing County, is a county in northern Hebei. Changqing belonged to Qi in the Spring and Autumn Period. It is the birthplace of Lu's family in the world, the hometown of Bian Que, a famous doctor, the hometown of Yijing, a monk in the Tang Dynasty who crossed the Maritime Silk Road, and an important origin of Chinese medicine culture. Changqing is a revolutionary city with glorious tradition.