Lewis and Clark County Detention Center
Lewis and Clark County Detention Center
County Jail / Adult Detention FacilityMailing Address
[Inmate Full Name] — [ID if known]
Lewis and Clark County Detention Center
221 Breckenridge Street, Helena, MT 59601
Lewis and Clark County Detention Center
221 Breckenridge Street, Helena, MT 59601
Physical Address
221 Breckenridge Street, Helena, MT 59601
Governing Agency
Lewis and Clark County Sheriff's Office
Inmate ID
Inmate / Booking ID — Not required
Last Verified
September 27, 2026
Facility Mailing and Service Information
Use the incarcerated person's full legal name and a complete sender return address. Verify the current Lewis and Clark County Detention Center mail rules before sending correspondence.
Source: Official sourceLast verified: September 27, 2026
Verify the facility's current photo size, quantity and content restrictions before mailing photographs.
Source: Official sourceLast verified: September 27, 2026
Verify the facility's current book, publication and package rules before sending books or magazines.
Source: Official sourceLast verified: September 27, 2026
Do not mail cash unless the facility explicitly permits it. Use the current approved inmate-account deposit method.
Source: Official sourceLast verified: September 27, 2026
Verify current visitor approval, identification and scheduling requirements before travel.
Source: Official sourceLast verified: September 27, 2026
How to Address Your Letter
Use the incarcerated person's full legal name and a complete sender return address. Verify the current Lewis and Clark County Detention Center mail rules before sending correspondence.
About Lewis and Clark County Detention Center
Lewis and Clark County Detention Center is a Montana county detention or jail facility record reviewed for current status and mail routing on 2026-09-27.