How to fill in the household registration form?

This depends on your local census requirements. Let’s talk about it. The first few digits of the household number are fixed. You have to fill in according to that, such as: 4501XXX. The X in the back is the household number, and the X in the front is the household number. The number is a fixed code given by the local area. The person serial number is how many people there are in this household. Please write it as you see what is required. For example: Head of household: 001 Spouse: 002 Children 003. This should be your understanding. For specific requirements, you'd better consult a census counselor.