Where to Apply

File Form I-129F at the USCIS Dallas Lockbox facility:
For U.S. Postal Service (USPS):

USCIS
P.O. Box 660151
Dallas, TX 75266

For USPS Express Mail and courier deliveries:
USCIS
Attn: I-129F
2501 South State Highway 121 Business
Suite 400
Lewisville, TX 75067