How to Address a Letter to Someone at SBWCC Unit 1

Use SBWCC's PO Box address and follow the exact line-by-line format to make sure your letter gets routed and processed without delays.

2 min read Verified from official sources

SBWCC routes all resident mail through a centralized PO Box (PO Box 51 in Boise), not the facility's street address. Staff open and search personal letters for contraband before delivery. If your envelope is missing key details (like the resident's IDOC number or "Unit 1"), processing slows down and matching the mail to the right person becomes harder. Mail containing prohibited items may be returned to you or turned over to authorities.

  1. Write the resident’s last name and IDOC number on line 1 - This is how SBWCC identifies who the letter belongs to.
  2. Put the facility name and unit on line 2 - List South Boise Women’s Correctional Center (SBWCC) and include Unit 1.
  3. Use PO Box 51 on line 3 - SBWCC resident mail is directed to this PO Box.
  4. Finish with the city, state, and ZIP on line 4 - Use Boise, ID 83707.

Note: Double-check the IDOC number and make sure you include “Unit 1” on the second line. Those two details help your letter get to the right person faster.

Here's a filled-in example you can copy onto your envelope. Replace the brackets with your loved one's information: [LAST NAME], [First Name] [IDOC #] South Boise Women's Correctional Center (SBWCC) Unit 1 PO Box 51 Boise, ID 83707

Once your letter arrives, staff open it and search for contraband. If something inside isn't allowed, SBWCC can reject the mail. Rejected items may be returned to you or handed over to authorities.

Warning: If your envelope includes unacceptable items, it may not be delivered. In some cases, the contents can be turned over to authorities.

Helpful Tips

  • Write a clear return address for the sender on the outside of the envelope.
  • Put the resident’s last name and IDOC number on the first line.
  • Include “South Boise Women’s Correctional Center (SBWCC) Unit 1” on the second line.
  • Use the PO Box address format (PO Box 51, Boise, ID 83707).
  • Send letters only. SBWCC residents may receive personal letters, but not packages.
  • If you include photos, avoid Polaroids and any photos that show nudity.

If your mail gets returned, sits in limbo for a long time, or you have questions about screening, contact SBWCC directly at 208-334-2731 or email sbwcc@idoc.idaho.gov. Have the resident's name, IDOC number, and Unit 1 ready so staff can help you faster.

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