Checking your processing time online. The USCIS allows you to check your processing time on their website. When you arrive at the site you will see two boxes one where you select the form you’re filling out and another for the field office or service center. First, click on the name or number of the form you completed.Where to send I 751 application?
Applicants must file Form I-751 at the USCIS California Service Center or the USCIS Vermont Service Center, depending on the State where they live. If you live in Costa Mesa, CA you file with the California Service Center at: