How to Send Mail to Someone at Stanislaus County Jail (and Why Your Letters Go to Arkansas First)
Sending a letter to someone in Stanislaus County custody? It won't go straight to Modesto. Personal mail gets routed through a processing site in Arkansas first, where it's screened before delivery.
Stanislaus County uses a central mail processing facility (JailATM) for all personal mail to incarcerated people. The Sheriff's Office says this helps keep drugs and other contraband out of housing units. Here's how it works: you mail your letter to the JailATM site in Arkansas. Staff there open it, scan it, and send a digital copy to your loved one at the detention facility. That's why your envelope goes to an Arkansas address instead of Modesto - personal mail is processed off-site before it reaches anyone inside.
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- ✓ Address personal mail to: JailATM.com Stanislaus County Sheriff’s Detention Center IP Name and Booking # P.O. Box 16120 Jonesboro, AR 72401
- ✓ Include the incarcerated person’s full name ("IP Name")
- ✓ Include the booking number (required)
Tip: If you don’t know the booking number, use the facility’s “Who’s in Custody” page to look the person up by name and find it.
Some items shouldn't go through JailATM at all. Books, legal mail, Medi‑Cal documents, and welfare cards need to be sent directly to the Sheriff's Detention Center mailing address. Route these through JailATM and they won't be processed correctly - your mail could get delayed or never arrive.
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- ✓ Polaroid pictures
- ✓ Nude or partially nude pictures or drawings
- ✓ Raised decorative stickers
- ✓ Letters in envelopes that could conceal contraband
- ✓ Personal checks
- ✓ Cards
- ✓ Items that may be obtained on commissary
- ✓ Mail containing substances such as powder, stains, liquids, etc.
- ✓ Any material deemed unacceptable by the Facility Commander
Note: Mail containing any prohibited items will be rejected and returned. Keep it simple - plain paper, plain envelope, nothing with raised stickers or anything that could leave residue or stains.
Want to send reading material? It has to come directly from the publisher. Magazines, periodicals, and books mailed by third parties aren't allowed. Hardcovers aren't allowed either. There's also a limit: each person can only have five books in their cell at a time. If they're already at five, additional books won't make it through - even if you ordered them.
The jail receives mail six days a week, but correct addressing matters. Always include the booking number. If you don't have it, look it up on the "Who's in Custody" page before sending anything.
If your loved one doesn't have money on their account, they can still write you. Indigent incarcerated people - those with $2.00 or less in their cash account - can receive four free postage-paid letters per week for personal correspondence. Legal mail has no limit.
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