In this article, we will provide you with up-to-date information about the USCIS Portland ME Field Office processing times for various applications. All the processing data in this blog are directly from the USCIS Case Processing Times website; we manually check the data every month to ensure its accuracy.

Keep in mind the importance of understanding processing times as they impact your application status.


The USCIS Portland ME Field Office handles various immigration applications for the residents of Maine. These applications include Employment-based adjustment, Family-based adjustment, Application for Naturalization, and Application for Recognition of U.S. Citizenship. Knowing the average processing times at this field office can help you better prepare your case and streamline your immigration journey.

The Process at the Portland ME Field Office

When you apply for immigration benefits at the USCIS Portland ME Field Office, your application goes through several stages depending on the type of application you submitted. For instance, when applying for Form N-400, Application for Naturalization, you may be required to attend a biometrics appointment, an interview, and a naturalization ceremony. The forms and processes might be different for Form I-485, Adjustment of Status or Form N-600, Application for Recognition of U.S. Citizenship.

Average Processing Times at the Portland ME Field Office

At the time of writing this article, the most recent processing time data for the USCIS Portland ME Field Office are as follows:

FormCategoryOffice80% of cases are completed within
I-485Employment-based adjustment applicationsPortland ME Field Office13.5 Months
I-485Family-based adjustment applicationsPortland ME Field Office14 Months
N-400Application for NaturalizationPortland ME Field Office8 Months
N-600Application for recognition of U.S. citizenshipPortland ME Field Office10.5 Months

Keep in mind that these processing times are subject to change. You may consult the USCIS Case Processing Times website for the most recent data.

Factors Influencing Processing Times

Processing times vary due to multiple factors, such as the complexity of the case, the number of applications received by the USCIS Portland ME Field Office, or availability of staff. Additionally, certain application types, like expedited naturalization for foreign-born spouses of U.S. citizens, may have quicker processing times.

How to Navigate the Process

To make your immigration journey smoother, you should follow the USCIS instructions carefully and provide complete and accurate information on your application. Additionally, you can use resources like the Form N-400 Guide by CitizenPath or the Telephonic Consultation service from ILRC to ensure you’re on the right track.

In some cases, you may need to consider the mandamus action as a way to push USCIS to make a decision on your case. However, consult with an immigration attorney before taking this step.


Understanding the processing times at the USCIS Portland ME Field Office is essential for a successful immigration journey. Stay updated on the latest processing times, and utilize available resources to ensure your application is processed as quickly as possible. Feel free to share your experiences or ask further questions in the comments section below. Good luck on your immigration journey!

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