USCIS Service Center Codes


The United States Citizenship and Immigration Services (USCIS), a government agency, is tasked with overseeing the following services:

Naturalization Service:

This service pertains to the granting of citizenship to non-residents of the United States. To avail of this service, individuals must adhere to the prescribed procedures outlined by USCIS.

Visa Service:

If you require a work visa, USCIS is the entity to contact, as they handle all visa petitions.

Address Change:

Changing your address can be done by visiting the nearest center and completing the AR-11 form. Alternatively, if you already have an account, the address change can be processed online.

Employment Service:

USCIS facilitates the verification of identity and employment authorization through the I-9 form.

Card Service:

Individuals can request the renewal or replacement of a green card at any authorized office location.

Immigration Support:

This service encompasses the formalities and legal procedures through which individuals can establish permanent residence in the United States. The entire process is managed by USCIS.

Service Center Codes (Locations)

  1. CSC: California Service Center
  2. EAC: Vermont Service Center
  3. IOE: ELIS (e-filing)
  4. LIN: Nebraska Service Center
  5. MSC: National Benefits Center
  6. NBC: National Benefits Center
  7. NSC: Nebraska Service Center
  8. SRC: Texas Service Center
  9. TSC: Texas Service Center
  10. VSC: Vermont Service Center
  11. WAC: California Service Center
  12. YSC: Potomac Service Center

How to Contact USCIS

Email Support:

If you encounter technical issues with the account service, you can reach out for assistance via email at FOIAPAQuestions@uscis.dhs.gov.

Phone Support:

For direct communication with a representative, you can call at 800-375-5283. Feel free to inquire about the support service or discuss any issues. If the matter cannot be resolved immediately, it will be forwarded to the relevant department accordingly. If calling from outside the US, dial 212-620-3418.

Appointment Scheduling:

To request an in-person appointment for collecting or submitting proof of immigration, travel documents, etc., call at 800-375-5283.

Adoption Inquiry:

For inquiries related to citizenship issuance in cases of adoption where the child is not a resident of the US, submit your query via email at nbc.adoptions@uscis.dhs.gov. The USCIS team will assist you accordingly.

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