This is asked about time and time again. The instructions state to mail the I-129F petition to the Dallas Lockbox facility, but people are still often confused about where to mail it, where it goes, and where it gets processed.
The Dallas Lockbox is an intake facility. It is not a USCIS service center. They do not process and adjudicate the petitions there.
The address for regular mail is a Dallas address and the address for courier mail is a Lewisville address. They are still both being sent to the Dallas Lockbox. The difference in addresses is just because the Dallas PO Box address cannot accept courier mail.
This is exactly what happens when your petition is received at the Dallas Lockbox > http://www.uscis.gov/about-us/directorates-and-program-offices/lockbox-intake/lockbox-intake-processing-questions-and-answers
The Lockbox Service provider performs the following activities when processing incoming applications:
- Receive, open, sort and stage mail.
- Prepare and scan documents.
- Enter document data in system from scanned images.
- Accept or reject applications and related fees based on business rules.
- Balance applications and fees.
- Deposit payments to the U.S. Treasury
- Send receipt notices for accepted applications to the applicant and designated representative.
- Return rejected applications to the applicant or designated representative.
- Transmit application data to USCIS and payment data to U.S. Department of Treasury.
- Send application files to the appropriate USCIS service center or field office for further processing.
Once your petition is received and dealt with by the Lockbox facility, it will be sent to one of the USCIS service centers to be adjudicated. This is not a transfer of your case. Transfers only happen between one service center and another. If your petition was to be transferred, then you would receive a transfer notice stating such. Don't enter a transfer into your VJ timeline unless you actually receive a transfer notice, which is something entirely separate/different from your NOA1 receipt notice of filing.
Your receipt notice (NOA1) will contain your receipt number and the service center location that your petition was sent to. Currently there are only two service centers processing the I-129F petitions. They are California (CSC) and Texas (TSC). If your receipt number begins with WAC, then your petition is at the CSC. If your receipt number begins with SRC then your petition is at the TSC.
Typically the petitions are sent to one of the two service centers based on where the USC petitioner resides. I have seen some report that is not always 100% the case, but for the most part this is correct.
California Service Center: Alaska, Arizona, California, Colorado, Guam, Hawaii, Idaho, Nevada, Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Montana, Nebraska, North Dakota, Ohio, Oregon, South Dakota, Utah, Washington, Wisconsin and Wyoming.
Texas Service Center: Alabama, Arkansas, Connecticut, Delaware, Florida, Georgia, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Mississippi, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, Oklahoma, Tennessee, Texas, Vermont, Virginia, U.S. Virgin Islands, West Virginia and the District of Columbia.