How to check the birth code? The birth code of the household registration can be queried through the "Ministry of Civil Affairs of the People's Republic of China". The method is as follows: 1. Baidu searches the China Civil Affairs Bureau and opens the official website in the search results. 2. Enter the official website to find the civil affairs data. 3. Click "Administrative Division Code" in the drop-down list of civil affairs data. 4. After entering, find the latest administrative region code, as shown in the figure. 5. After entering, you can see the codes of all regions in the country. Do you understand that?