SATF splits inmate mail across 4 separate boxes by housing facility. Use the wrong one and your letter could be delayed.
Send letters and photos in minutes
Mailing someone at Substance Abuse Treatment Facility and State Prison, Corcoran (SATF) takes an extra step most CDCR facilities don’t require: SATF publishes 4 separate inmate mailing boxes, one for each pair of housing facilities, instead of a single shared box. You need to know which facility the person is housed in before you address an envelope. This is also a genuinely important distinction to keep straight: SATF is a separate CDCR institution from California State Prison, Corcoran (CSP-Corcoran), which sits in the same city but is not the facility covered by this guide. This page covers all 4 inmate mailing addresses, the separate staff address, and what SATF accepts.
Unlike CDCR facilities that use one shared box for all inmate mail, SATF splits its mail by which pair of housing facilities the person lives in:
Facility A & B:
[Full Legal Name, CDCR Number]
Substance Abuse Treatment Facility
P.O. Box 5248
Corcoran, CA 93212
Facility C:
[Full Legal Name, CDCR Number]
Substance Abuse Treatment Facility
P.O. Box 5246
Corcoran, CA 93212
Facility D & E:
[Full Legal Name, CDCR Number]
Substance Abuse Treatment Facility
P.O. Box 5242
Corcoran, CA 93212
Facility F & G:
[Full Legal Name, CDCR Number]
Substance Abuse Treatment Facility
P.O. Box 5244
Corcoran, CA 93212
Check CIRIS at ciris.mt.cdcr.ca.gov, or ask the person directly, to confirm which facility they’re currently housed in before you address an envelope. If you’re not sure, ask the person in their next letter or call the General Visiting Sergeant at (559) 992-7100, option 2, and they can point you to the right box.
SATF is a separate CDCR institution from California State Prison, Corcoran (CSP-Corcoran), even though both are located in the city of Corcoran. They have different addresses and different mailing boxes. Mail addressed to the wrong institution will be delayed or returned, so double-check you have the right facility name and address before sending anything.
SATF also publishes a separate box, P.O. Box 7100, Corcoran, CA 93212, for general institution and staff correspondence. That box is not for inmate mail. If you write to P.O. Box 7100 by mistake, expect delays or the letter being returned instead of delivered.
Write the person’s full legal name and their CDCR number on every envelope. This is how staff route mail internally to the correct housing facility.
People do get transferred between housing facilities within SATF, and between CDCR institutions entirely. Check CIRIS, or ask the person directly, to confirm they’re still at SATF and which facility they’re in before you send a letter, especially if some time has passed since you last heard from them.
Standard letters, greeting cards, and photos are generally accepted. Keep to plain paper and cards without stickers, glitter, tape, or anything glued on, since those items get mail rejected.
Photos are generally allowed within CDCR’s limits: no Polaroids, since the backing can conceal contraband, and nothing larger than 8x10. Avoid nude or sexually explicit images, gang-related content, and anything depicting drugs or weapons, which will be rejected. There’s usually a limit on how many photos per envelope, so send a reasonable number and confirm current limits with the institution if you plan to send many. You can also send photos through Pigeonly without printing anything yourself. Upload the photos online and Pigeonly prints and mails them to SATF for you.
SATF’s facility page doesn’t list a separate box for legal mail. If you’re an attorney or legal representative, mark your envelope clearly as legal mail and call (559) 992-7100 to confirm the current handling process and correct address for it, since legal mail is opened only in the presence of the incarcerated person to check for contraband, not read.
Incoming personal mail is opened and inspected for contraband before delivery. If a piece is rejected, the person is typically notified and told why, and the item may be returned to sender or held. Following the plain-paper, no-attachments rules is the best way to avoid a rejection.
You can’t mail a personal package straight to the person. Approved packages, including quarterly packages, come through CDCR’s contracted package vendor, which the person or an approved family member orders from. Contact the institution at (559) 992-7100 or check CDCR’s approved vendors page for the current process.
Don’t mail cash. Send a money order or check payable to CDCR to the correct facility’s box above, or send an electronic deposit through GTL/ConnectNetwork, JPay, or Access Corrections. See the CDCR send-money guide for the full process, fees, and how restitution affects deposits.
6 of 11 questions
It depends on which facility they're housed in. Facility A & B use P.O. Box 5248, Facility C uses P.O. Box 5246, Facility D & E use P.O. Box 5242, and Facility F & G use P.O. Box 5244, all in Corcoran, CA 93212. Confirm the housing facility before you address an envelope.
MailSATF splits inmate mail by housing facility instead of using one shared box like some other CDCR institutions. Sending to the wrong box can delay delivery, so it's worth confirming the person's current facility on CIRIS or by asking them directly.
MailNo. SATF and CSP-Corcoran are 2 separate CDCR institutions that happen to be located in the same city. They have different addresses and different mailing boxes, so make sure you have the right facility before sending mail.
MailCheck CIRIS at ciris.mt.cdcr.ca.gov, ask the person directly in their next letter, or call the General Visiting Sergeant at (559) 992-7100, option 2.
MailCheck CIRIS, or ask the person directly, especially if it's been a while since your last letter, since transfers between housing facilities and CDCR institutions do happen.
MailYes, within CDCR's limits: no Polaroids and nothing larger than 8x10. Avoid nudity, gang references, and images of drugs or weapons, which get rejected. There's usually a per-envelope limit, so send a reasonable number. You can also send photos through Pigeonly, which prints and mails them for you.
MailNew books and magazines generally must come directly from an approved publisher or vendor, not mailed by you personally. Check CDCR's approved vendors and disapproved-publications rules before ordering.
MailNo. Personal packages aren't accepted directly. Approved packages come through CDCR's contracted package vendor, ordered by the person or an approved family member.
MailSATF's published facility page doesn't list a separate legal-mail box. Mark your envelope clearly as legal mail and call (559) 992-7100 to confirm the correct address and current handling process before mailing.
MailStickers, glitter, tape, glued-on items, cash, Polaroids, oversized photos, and any content seen as contraband, gang-related, or explicit. Stick to plain paper and cards.
MailNever send cash. Mail a money order or check payable to CDCR to the correct facility's box above, or use an electronic deposit through GTL/ConnectNetwork, JPay, or Access Corrections. See the CDCR send-money guide for details.
MailConfirm the person is still housed here before you mail.
View ArticleGet approved with CDCR Form 106, then schedule through VSA.
View ArticleUse a mailed money order or an EFT vendor.
View ArticleStay in touch between letters with free calls.
View ArticleSearch for your loved one and start sending photos, letters, and messages today.
Search for Your Loved OneFree Inmate Search
All information on this page comes directly from official government and facility sources. How we verify information › Last verified July 20, 2026.