Costilla County Jail
Costilla County Jail
County JailMailing Address
[Inmate / Resident Full Name] — [ID if known]
Costilla County Jail
P.O. Box 6, San Luis, CO 81152
Costilla County Jail
P.O. Box 6, San Luis, CO 81152
Physical Address
San Luis, CO 81152
Governing Agency
Costilla County Sheriff's Office
Inmate ID
Inmate / Booking ID — Not required
Last Verified
September 29, 2026
Facility Mailing and Service Information
Use the incarcerated person's full legal name and booking/inmate ID if known. Verify current facility correspondence rules before sending.
Last verified: September 29, 2026
Verify current photograph size, quantity and content restrictions before sending photographs.
Last verified: September 29, 2026
Verify current publication and package rules before sending books or packages.
Last verified: September 29, 2026
Do not send cash with ordinary correspondence. Use the facility's approved deposit method.
Last verified: September 29, 2026
Verify current visitor approval, identification and scheduling requirements before travel.
Last verified: September 29, 2026
How to Address Your Letter
Use the incarcerated person's full legal name and booking/inmate ID if known. Verify current facility correspondence rules before sending.
About Costilla County Jail
Costilla County Jail is a Colorado county, city, juvenile or contract correctional record reviewed on 2026-09-29.