If you are responding to a notice, mail the amended return to the address shown in the notice. Otherwise, mail your federal amended return to the Internal Revenue Service Center listed for the state that you live in according to the IRS instructions.
If you are amending more than one year of returns, mail each amended return in a separate envelope.
There is no street address. The zip code indicated in the chart below is exclusive to the corresponding IRS processing center. The zip code will identify it as going to the IRS
State amended Returns
A list of State Amended Return mailing addresses can be found by referring to this Knowledgebase Article.