Reviewed on: April 05,2026
Send Inmate Mail

How to find inmate number and address mail

i was looking for my inmate on the list but he isn't there yet. how long does it take to get on the list o i can have his inmate number? Also i want to just write him, how would i address the letter? does it need his inmate number on it?

If you cannot find your inmate yet, it usually means one of two things: either they have not been entered into the system yet, or their profile has not been
Ask The Inmate
Answered by a former federal inmate · 14+ years advising families
✓ Verified answer May 14,2013 · Send Inmate Mail
1

If you cannot find your inmate yet, it usually means one of two things: either they have not been entered into the system yet, or their profile has not been created on InmateAid.

After someone is booked, it can take a few hours to a few days for their information and inmate number to appear in official databases, depending on the facility.

If you still cannot locate them, you can:

  • Try searching with different name variations
  • Check the specific jail or state website directly
  • Provide full name, date of birth, and location to help narrow it down

About sending a letter:
You can still write to him even if you do not have the inmate number, but it is always better to include it if possible.

When addressing a letter yourself, include:

  • His full name
  • Inmate ID number if you have it
  • Facility name and mailing address
  • Your full return address

Mailrooms will often try to match the name if the number is missing, but having the ID number helps avoid delays or misdelivery.

If you use InmateAid’s letter service, once the inmate profile is set up, the system will automatically format the address correctly for you. All you need to do is write your message.

Accepted Answer Date Created: May 14,2013
Was this helpful?

My situation is different — ask your own question.

Our advisors answer within 24 hours. Free, always. Former federal and state inmates with direct experience.

About this answer: This response was prepared by InmateAid’s editorial team in consultation with former inmates who have direct experience with the federal correctional system. InmateAid has served families of the incarcerated since 2012. This is general information only — not legal advice. Last reviewed April 2026.