Selective Service number – what is it?
The Selective Service System is the US government agency that is responsible for the information on those men who can be potential subjects for a military subscription. According to the USA laws, all male citizens, even non-US ones, permanent residents, refugees, asylum seekers, and illegal aliens of 18-26 years must be registered a month after they turn 18 years old. Women do not need to undergo this procedure, while male citizens as old as 17 years and 3 months have the possibility to pre-register for the information to be added to the system automatically.
There is a list of federal programs that require Selective service registration so that you are going to certainly need one if you want to go through the naturalization process, receive a student loan, get a federal job etc. What is more, if you fail to do that you may get a rejection when you apply for American citizenship.
All men between 18 and 26, are bound to register for the service as well as provide a proof of it. Those who are older than 26 but younger than 31 must supply the proof that they did register when they were supposed to. In case you failed to succeed with the registration, you need to provide an explanation as for why you failed. What is more, you also need an indication letter sent by Selective Service stating your status.
It should be accented that the fact that you are registered in the service does not necessarily mean that you are bound to join the military forces. While the avoided registration due to whichever reason may affect your permanent resident application for the USA citizenship (Form N-400) not in the best way possible.
To register follow this link - www.sss.gov. In case you are not sure whether you are already registered or not – compose the Official Letter of Verification to receive the confirmation.
Related
Form N-400 | Application for Naturalization
/form/form-n-400-or-application-for-naturalization/amp/
Am I a US citizen if one of my parents is?
/faq/am-i-a-us-citizen-if-one-of-my-parents-is/amp/
How can you discover your travel records required for the N-400 application?
/faq/how-can-you-discover-your-travel-records-required-for-form-n400/amp/
How does time outside the U.S. count and how are you supposed to state it in the N-400 form?
/faq/how-does-time-outside-the-u-s-count-and-how-are-you-supposed-to-state-it-in-the-n-400/amp/
What is Form G-1145 and do I need to use it?
/faq/what-is-form-g-1145-and-do-i-need-to-use-it/amp/
What is the difference between a Country of Nationality and a Country of Birth in terms of Form N-400?
/faq/what-is-the-difference-between-a-country-of-nationanality-and-a-country-of-birth/amp/
Recent posts
DV-2026 Deadline: What Diversity Visa Winners Must Do Before September 30
A time-sensitive, official-source checklist for DV-2026 selectees: confirm selection safely, understand Visa Bulletin cut-offs, prepare for the right process, and act before the fiscal-year deadline.
Form I-9 Update for August 2026: Which Version Employers Must Use Now
A practical August 2026 update for employers on the correct Form I-9 edition, where to check the expiration date, and how to update an onboarding workflow without confusing new hires or existing records.
August 2026 Visa Bulletin: EB-2 India Unavailable, Filing Charts, and DV-2026 Deadlines
A plain-English guide to the August 2026 Visa Bulletin, with the employment-based, family-based, and Diversity Visa details applicants should check before acting.
How to Change Your Address With USCIS After Moving: E-COA, AR-11, and Pending Cases
A practical, official-source guide to reporting a move to USCIS, including pending cases, sponsors, receipt numbers, and situations requiring special instructions.
July 2026 Visa Bulletin: EB-2 India Unavailable and What Applicants Should Do
The July 2026 Visa Bulletin brings major employment-based green card changes, including EB-2 India becoming unavailable for the rest of FY 2026, EB-1 India retrogression, and EB-5 unreserved India unavailability.
Form I-20 and I-901 SEVIS Fee Before the F-1 Visa Interview
A pre-interview guide for F-1 students covering Form I-20 review, SEVIS fee timing, payment basics, and the documents students commonly prepare before the visa interview.