251200. According to the information on the official website of the postal code database, the area code of Yucheng City, Dezhou City, Shandong Province is 0534, and the postal code is 251200. The first two digits 25 represent provinces, cities, and autonomous regions, the third digit 1 represents the zip code, and the fourth digit 2 represents the county, City, the last two digits 00 represent the specific delivery area.