Maricopa County Jail Inmate Search: How to Find Someone

How to search

The Sheriff’s Office inmate lookup on mcso.org searches everyone currently held in the county system by name or booking number. Try last name plus first initial if the full name misses — spellings from booking are imperfect. Each result shows the booking number, current facility, charges, bond information, and upcoming court dates. If the person was arrested very recently, allow a few hours for booking to post; the information line at (602) 876-0322 can help when the lookup shows nothing.

Reading the result

The facility line tells you where they are: booking and initial appearances run through the 4th Avenue Jail, and people are then transferred — men commonly to Towers or Lower Buckeye, women to Estrella. The bond line tells you whether release can be purchased and for how much — see how to post bond. The court date line tells you when the next decision happens and in which court.

If they are not in the county system

City police sometimes hold arrestees briefly before county booking, federal custody is a separate system, and juveniles are held separately. If the MCSO lookup shows nothing after several hours, call the arresting agency, then the information line. A released person also drops off the roster — no result can mean already out.

What to do once you find them

Three things, in order: tell them to say nothing about the case on jail phones — the calls are recorded; note the next court date, because release conditions get set or revisited there; and get a criminal defense attorney moving before that hearing. What happens in the first days is covered in our guide to what happens after an arrest.