Guadalupe County Adult Detention Center
Guadalupe County Adult Detention Center
County Jail / Detention FacilityMailing Address
[Inmate Full Name] — [SO Number]
PO Box 247
Phoenix, MD 21131
PO Box 247
Phoenix, MD 21131
Physical Address
2617 N. Guadalupe Street, Seguin, TX 78155
Phone
Governing Agency
Guadalupe County Sheriff's Office
Inmate ID
SO Number — Required
Last Verified
September 25, 2026
Facility Mailing and Service Information
Personal mail is digitally delivered. Stickers, glitter, lipstick, perfume/cologne, bodily fluids and other contraband items are prohibited.
Source: Official sourceLast verified: September 25, 2026
Photos may be sent subject to current Guadalupe County rules; nude/sexually explicit material is prohibited.
Source: Official sourceLast verified: September 25, 2026
Books/magazines must follow current publication-source rules; publisher-direct materials are handled separately from ordinary personal correspondence.
Source: Official sourceLast verified: September 25, 2026
Use the approved TouchPay/lobby kiosk procedure. Do not place cash or checks inside personal mail.
Source: Official sourceLast verified: September 25, 2026
Confirm the inmate's current custody location and the jail's current visitation schedule, visitor approval/ID rules and video-visit procedures before traveling.
Source: Official sourceLast verified: September 25, 2026
How to Address Your Letter
Incoming personal mail is processed through the vendor and delivered to the secure inmate tablet system. Include the inmate's full booked name and SO number and a complete sender return address.
About Guadalupe County Adult Detention Center
Guadalupe County Adult Detention Center is a Texas local detention facility operated by Guadalupe County Sheriff's Office. Confirm current custody and the inmate identifier before mailing because county-jail procedures and mail vendors can change.