8 master:
Ready to file N-400 in a regular mail envelop, which address should I pick or both are OK?
USCIS
P.O. Box 660060
Dallas, TX 75266
-If you use USPS regular mail such as first class mail (not overnight), use above address.
For Express Mail or courier deliveries, use the following address:
USCIS
Attn: N-400
2501 S State Hwy 121 Business
Suite 400
Lewisville, TX 75067
-THis address is for Express mail (overnight delivery).
Thanks!
