If you do not know your receipt number, contact the USCIS Contact Center for help.
Mark the envelope and the cover letter with the type of submission. For example, Original Submission, Application to Register Permanent Residence or Adjust Status (Form I-485). Mark the envelope and the cover letter with the form number.
You must return the USCIS-issued document with the incorrect information. Generally, you also need to submit either a statement explaining the error or supporting documentation to show what the correct information should be, or both.
If you hand write your answers, use black ink. Make sure that everything you write on the form is clear, so we can easily read the information on the scanned image we produce when we process your form.
Submit a secure message through your USCIS online account. Submit an inquiry through the Ask Emma chat feature. Call the USCIS Contact Center at 1-800-375-5283. See our USCIS Contact Center Tip Sheet on how to best reach out to the USCIS Contact Center.
Generally, I don't want people corresponding with USCIS, unless they've been asked to do so. It's generally not a good idea to just out of the blue, write USCIS a letter. So our advice generally is to not send USCIS a letter.
Your letter should be addressed to the USCIS office that is responsible for your case. You can find the address on the USCIS website or by contacting the USCIS national customer service center. You should also include a clear and professional salutation, such as “Dear USCIS Officer” or “To Whom It May Concern.”
Click did not receive notice by mail. Input all of the requested information. Select requested by applicant/petitioner. Finally you will get a confirmation page with a case number. Please copy that in case you need to follow-up with a call to USCIS which can be done at this number 1-800-375-5283.