The first two digits 6 1 represent Sichuan province. The third number 8 stands for Deyang City. The fourth digit 1 stands for Zhongjiang County. The last two digits 00 represent the post office and its delivery area.

Zhongjiang County belongs to Deyang City, Sichuan Province. Zhongjiang is a thousand-year-old town with rich history and culture. In the Three Kingdoms, Wucheng County was established in Shu, Xuanwu County was changed in Sui, and Zhongjiang was changed to Xuanwu in Song.