Monroe Correctional Complex
Monroe Correctional Complex
State Prison ComplexMailing Address
COMPLEX RECORD. Use the incarcerated person's assigned MCC unit mailing address: TRU P.O. Box 888; WSRU/IMU P.O. Box 777; SRTC P.O. Box 514; MSU P.O. Box 7001, Monroe, WA 98272.
Physical Address
16550 177th Avenue SE, Monroe, WA 98272
Governing Agency
Washington State Department of Corrections
Inmate ID
Six-digit WA DOC Number — Required
Last Verified
September 29, 2026
Facility Mailing and Service Information
Washington DOC Policy 450.100 governs incoming correspondence. Mail is subject to inspection and must include the incarcerated individual's full name, six-digit DOC number, correct unit address, and sender return address.
Source: Official sourceLast verified: September 29, 2026
Photographs must comply with current Washington DOC correspondence and property rules.
Source: Official sourceLast verified: September 29, 2026
Publications must follow current Washington DOC approved-vendor/publication rules.
Source: Official sourceLast verified: September 29, 2026
Do not send cash, personal checks, or stamps in ordinary mail. Use Washington DOC-approved Send Money procedures.
Source: Official sourceLast verified: September 29, 2026
Visitors must be approved and follow Monroe Correctional Complex's current unit-specific visiting schedule.
Source: Official sourceLast verified: September 29, 2026
How to Address Your Letter
Use the incarcerated individual's full committed name, six-digit Washington DOC number, and the correct Monroe unit mailing address. Include a complete USPS-compliant sender return address.
About Monroe Correctional Complex
Monroe Correctional Complex is a current Washington DOC prison complex containing the Twin Rivers Unit, Washington State Reformatory Unit, Sky River Treatment Center, Minimum Security Unit, and Intensive Management Unit.