Frederick County Detention Center
Frederick County Detention Center
County Adult Detention CenterMailing Address
[Inmate Full Name] — [Inmate ID]
Frederick County Detention Center
P.O. Box 2925, PMB 79078, San Antonio, TX 78299-2925
Frederick County Detention Center
P.O. Box 2925, PMB 79078, San Antonio, TX 78299-2925
Physical Address
7300 Marcie's Choice Lane, Frederick, MD 21704
Governing Agency
Frederick County Sheriff's Office
Inmate ID
Inmate / Booking Number — Not required
Last Verified
September 27, 2026
Facility Mailing and Service Information
Ordinary personal mail is routed through the current off-site processing address at P.O. Box 2925, PMB 79078, San Antonio, TX 78299-2925. Use the inmate's full legal name and ID and include a complete sender return address. Legal/direct-facility mail may use the physical facility address: 7300 Marcie's Choice Lane, Frederick, MD 21704.
Source: Official sourceLast verified: September 27, 2026
Photos may be included within the 10-page mail limit, but Polaroids and sexually explicit images are prohibited.
Source: Official sourceLast verified: September 27, 2026
Books/publications generally follow separate direct-publisher or direct-facility procedures.
Source: Official sourceLast verified: September 27, 2026
Do not send cash through ordinary off-site mail. Use the facility's approved deposit method.
Source: Official sourceLast verified: September 27, 2026
Verify current custody/placement, visitor approval requirements and current visitation rules before traveling.
Source: Official sourceLast verified: September 27, 2026
How to Address Your Letter
Ordinary personal mail is routed through the current off-site processing address at P.O. Box 2925, PMB 79078, San Antonio, TX 78299-2925. Use the inmate's full legal name and ID and include a complete sender return address. Legal/direct-facility mail may use the physical facility address: 7300 Marcie's Choice Lane, Frederick, MD 21704.
About Frederick County Detention Center
Frederick County Detention Center is a Maryland county, juvenile, corrections or auxiliary facility record reviewed for current status and mail routing on 2026-09-27.