If you choose to file a paper copy of Form 7004, this article provides you with the mailing address where the IRS requires you to mail 7004 extension form.Table of contents 1. Form 7004 Mailing AddressRecommended a. Form 1120-S, 1120, 1065, 1120-REIT, 1120-RIC, 8612, 8613 b. ...