How Do You Register for Selective Service?
Learn how to register for Selective Service online, who usually needs to register, and what information you need before you start.
To register for Selective Service, use the official Selective Service online registration form if you are required to register and have the required identity details. The standard form asks for full name, home address, date of birth, and Social Security number. If you do not have a Social Security number or you live abroad, use the agency's alternate instructions instead of forcing the standard flow.
Registration paths
Required to register and has SSN
Online registration
Use current and accurate information
No Social Security number
Contact Selective Service
Standard online form may not fit
U.S. citizen living abroad
Foreign-address registration path
Registration can still be required
Not sure if required
Review who-needs-to-register rules
Do not rely on assumptions
Already registered
Verify registration instead
Do not create duplicate records
Registration is not military enlistment
Selective Service registration creates a record with the agency. It does not mean the person joined the military or applied to serve.
Register
- 1Confirm whether Selective Service rules require registration.
- 2Gather full name, home address, date of birth, and Social Security number if you have one.
- 3Use the official online form when the standard path fits.
- 4Follow alternate instructions if you have no Social Security number or a foreign address.
- 5Save the registration number and date after the record is created.
FAQ
Who usually needs to register for Selective Service?
Selective Service rules generally require men in the covered age range to register, but citizenship, immigration status, sex, age, and exemption details can affect the answer.
Can I register for Selective Service without a Social Security number?
The standard online form asks for a Social Security number. Selective Service says people without one should contact the agency for alternate handling.
Is Selective Service registration the same as joining the military?
No. Registration creates a record with the Selective Service System. It is not enlistment, induction, or a military application.
Sources & method
We reviewed these references while writing this answer. Figures are estimates — confirm safety-critical work with a professional. Last updated June 7, 2026.
- RegisterSelective Service System · sss.govSupports the online registration form, required fields, no-Social-Security-number fallback, and foreign-address registration context.
- Who Needs to RegisterSelective Service System · sss.govSupports the registration requirement framing and the need to check status, age, and exemption details before starting.