Love The Strokes. Dont have his address.

But you could always try to write to their record label management or at least try to contact them asking whether it is cool to request for an auto. I did that once to a well known indie bands (not the Strokes) management, and they sent me a signed cd for free!

This is the address that I found at The Strokes (i think Julian is under the same label) web:

Sony Music Entertainment
550 Madison Avenue, 23rd Floor,
New York, NY 10022-3211

Hope it helps and good luck.

Just want to write a fan letter about how much I appreciate his music.
Lead singer of the Strokes and has a successful solo career for those who don't know who he is.
An address would be awesome.
Thanks.