does it cost anything to change your address

I believe there is no charge if you actually go to the Post Office. It's $1 to do it online.

U can fill out change of address card and leave in your mailbox ur mailcarrier can bring u one its free

I work at a local post office and no it does not cost anything to put in a change of address ONLY if changed at a post office. If it is processed online you will have a fee of 1 dollar.

No