The municipal districts are 120 100, Heping district12010/,Hedong district 120 102 and Hexi district120.
Tanggu district 120 107, Hangu district 120 108, Dagang district 120 109, Dongli district120/kloc-0. Jinnan District12012, Beichen District12013, wuqing district12014.
The first six digits are the address codes, indicating the administrative division codes of the county-level cities, flags and districts where the permanent residence of the coding object is located.
Legal basis: Article 3 of the Law of the People's Republic of China on Resident Identity Cards includes: name, gender, nationality, date of birth, location of permanent residence, citizenship number, personal photo, fingerprint information, validity period of certificate and issuing authority. Citizenship number is a unique and life-long identity code for every citizen, which is compiled by public security organs according to the national standard of citizenship number. Citizens applying for obtaining, renewing or replacing resident identity cards shall register their fingerprint information.