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If you're filing any of these forms: 

Form 1098-C, Form 2848, Form 3115, Form 3468, Form 4136, Form 5713, Form 8283, Form 8332, Form 8858, Form 8864, Form 8885, or Form 8949, 

Address them to: 

Internal Revenue Service 

Attn:  Shipping and Receiving 0254 

Receipt and Control Branch 

Austin, TX 73344-0254  

If you're paper filing a 1040, find your state here.