How could I verify my security clearance status after leaving service?

SGT Jacqueem Spratley – Ask a trusted agent with a JPAS (Joint Personnel Adjudication System) Account to help you. This person usually wears the hat of a Unit Security Manager as an additional duty. You'll need to give them your SSAN to check your clearance status.

So much urban myth out there. When you leave MIL, your security office is required to cancel your clearance. If they don't, standby for the buttkicking on the next Security Audit. By definition, you have no security clearance sponsor, hence no clearance. If you go to work for the GOV or contractor for GOV work in which your new position requires a clearance, the new sponsor cognizant security office will process the new clearance request for you. Make no mistake, it will be a new clearance because the MIL one no longer exists. That you had a clearance previously for which the BI, SSBI, etc. shelf life is still good, then being granted a new one is much faster. There's far less pucker factor on interim clearances being done locally while waiting for the clearinghouse stuff to be done. Even during a MIL career, many SMs have their clearances turned on and off depending on whether or not their billet requires it. Especially true for SCI and higher. There's an ironclad process for debriefing, nondisclosures, etc. associated with it. Bottom line, the old clearance is gone, but the basis can still be valid, which is the key to getting a new one fast. Saw a comment about a 3-dayer. Sounds like an interim while the rest of the world caught up.

I know this isn't the answer youre looking for, but you don't really need to. your clearance will bebrought up whenever you go into a job that requires it. mine was dug back up once I got my job and instead of waiting however long, a month or so, for verification, because I had one years ago I was good in 3 days. basically regardless of if its still valid or not, if you need it brought back up to be current, when you apply for a new job, they'll look into it and make it straight.