I-130 Petitions:

The USCIS Chicago Lockbox address for filing stand-alone Form I-130 is:

For U.S. Postal Service:

USCIS
P.O. Box 804625
Chicago, IL 60680-4107

For Express mail and courier deliveries:

USCIS
Attn: I-130
131 South Dearborn-3rd Floor
Chicago, IL 60603-5517

I-140 Petitions:

Form I-140 filed alone or together with an Application to Register Permanent Residence or Adjust Status (Form I-485) should be filed at the USCIS Dallas Lockbox facility, or at the USCIS Nebraska or Texas Service Centers, depending on the classification for which the petition is being filed. Forms I-140 for skilled workers (marked “f” in Part 2, Petition Type, of the form) should continue to be submitted to either the Nebraska or to the Texas Service Centers. Forms I-140 that are accompanied by a Form I-907, Request for Premium Processing Service should also go only to the Nebraska or Texas Service Centers. Beginning on Aug. 3, 2010 all other Form I-140s should be submitted to the USCIS Dallas Lockbox facility. Detailed guidance can be found in the updated Form I-140 instructions.

I-539 Petitions:

Beginning Aug. 3, 2010 applicants submitting Form I-539 by itself must mail their application to the USCIS Dallas Lockbox facility.

Applicants submitting their Form I-539 with Form I-129, Petition for Nonimmigrant Worker, will continue to submit both forms to either the USCIS California Service Center or the USCIS Vermont Service Center, according to the Form I-129 filing instructions. Dependent applicants submitting Form I-539 applications at the same time should include their application in the package with the primary applicant.

Applicants filing Form I-539 under category “P-4, Dependents of Major League Sports” Athletes or Support Personnel, should continue to file their applications at the USCIS Vermont Service Center.

Applicants filing under the category “V Nonimmigrant” should continue to file their applications at the USCIS Chicago Lockbox facility.

I-129F Petitions:

Beginning Aug. 3, 2010 all Form I-129F petitions being filed by a U.S. citizen on behalf of a fiancé(e) or spouse must be submitted to the USCIS Dallas Lockbox facility.

For U.S. Postal Service:

USCIS
PO Box 660151
Dallas, TX 75266 

For Express mail and courier deliveries:

USCIS
Attn: I-129F
2501 South State Highway 121 Business
Suite 400
Lewisville, TX 75067