Extension - B2

[neoatmn]

Hi,

 

I need to extend the stay for my grandmother who is here on a B2 visa through I-539 paper filing at the Dallas Lockbox facility.

 

But I see two addresses for Dallas. Im planning to send the application through  USPS Priority Mail (Not Priority express). Which address do I need to use?

 

USCIS Dallas Lockbox

U.S. Postal Service:
USCIS
P.O. Box 660166
Dallas, TX 75266

USPS Express Mail/Courier:

USCIS
ATTN: I-539
2501 S. State Highway 121 Business
Suite 400
Lewisville, TX 75067

 

 

Thanks