How to mail a letter to an inmate at San Carlos Correctional Facility
To write to someone held at San Carlos Correctional Facility, address your envelope to the inmate's full committed name and DOC number, San Carlos Correctional Facility, P.O. Box 3, Pueblo, CO 81002. San Carlos Correctional Facility is a psychiatric correctional facility in Pueblo, Colorado, operated by the Colorado Department of Corrections.
Inmate mail — San Carlos Correctional Facility
[Inmate's full committed name] [DOC number] San Carlos Correctional Facility P.O. Box 3 Pueblo, CO 81002
Put the inmate's full committed name and DOC number on the first line, and mail to the institution's inmate-mail address here — not its street address. Mail without a usable name and DOC number is returned.
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San Carlos Correctional FacilityP.O. Box 3Pueblo, CO 81002
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Key facts
- Send mail to San Carlos Correctional Facility, P.O. Box 3, Pueblo, CO 81002 — the institution's inmate-mail address, not its street address.
- Colorado sends mail to each facility directly. Address it to the incarcerated person’s full name and DOC number, then the facility’s own mailing address (a P.O. box for most, a street address for some).
- Include a valid return address. Mail without the DOC number or a return address can be rejected (governed by Administrative Regulation 300-38).
- Incoming mail is opened and inspected for contraband; generally only letters and photos are accepted — no packages or enclosed items.
- Confirm the person’s current facility on CDOC’s inmate locator before mailing — people are transferred without notice, and several Cañon City and Pueblo facilities share a mailroom, so the facility name on the envelope matters.
- PostPal prints and mails your letter for you the next business day for $5 — with your return address printed so the inmate can write back, and no printer, envelope, or stamp needed.
How to send your letter
- 1
Confirm the person is still at San Carlos Correctional Facility
Inmates are transferred between facilities without notice. Confirm they are still at San Carlos Correctional Facility — and double-check the DOC number — before you mail anything, using the Colorado Department of Corrections (CDOC)'s official inmate locator.
- 2
Address it exactly
First line: the inmate's full committed name and DOC number. Then San Carlos Correctional Facility, P.O. Box 3, Pueblo, CO 81002. Add your full return address.
- 3
Keep the contents allowed
Plain letter-size paper is safest. Do not enclose cash, stamps, gift cards, or any object other than paper — prohibited items get the whole letter rejected. Check the mail rules above before adding photos.
- 4
Send it without a printer
Write or upload your letter to PostPal with this address prefilled, and we print, envelope, and mail it via USPS the next business day for $5 — your return address printed so they can reply.
Common questions
How do I address a letter to an inmate at San Carlos Correctional Facility?
Put the inmate's full committed name and DOC number on the first line, then San Carlos Correctional Facility, P.O. Box 3, Pueblo, CO 81002. Include your full first and last name and return address on the envelope.
Is mail to San Carlos Correctional Facility opened, read, or scanned?
Expect it to be. Incoming personal mail is opened and inspected for contraband and can be read under the Colorado Department of Corrections (CDOC)'s rules.
What can I send to San Carlos Correctional Facility — photos, cards, or books?
Photos are generally allowed; no polaroids or laminated photos, and nothing nude or sexually explicit. Books and magazines must come directly from an approved publisher or vendor (per AR 300-26), not in personal mail.
What can't I mail to San Carlos Correctional Facility?
Do not send: Cash, checks, money orders, or postage stamps; Anything other than paper letters and photos (no packages or enclosures); Nude, sexually explicit, or contraband-promoting content; Stickers, glitter, glue, tape, perfume, lipstick, or crayon/marker; Polaroids or laminated items. Prohibited items get the letter rejected or destroyed.
What if the person has been transferred or released?
The letter will not reliably reach them or come back to you. Confirm they are still at San Carlos Correctional Facility before mailing, since the Colorado Department of Corrections (CDOC) moves people without notice.
Can the inmate write back to me?
Yes, if you include a complete return address. Inmates can send outgoing mail, though they may need to cover their own postage. PostPal prints your return address for you.
Sources
Addresses verified August 2026 against official sources. Always confirm on the official site before time-sensitive filings.
See the full Colorado inmate mail rules — what you can and can’t send, photos & more →