Union County Jail
Union County Jail
County Jail / Detention FacilityMailing Address
[Inmate / Resident Full Name] — [ID if known]
Union County Jail
209 E. Main Street, Suite 250, Elk Point, SD 57025
Union County Jail
209 E. Main Street, Suite 250, Elk Point, SD 57025
Physical Address
209 E. Main Street, Suite 250, Elk Point, SD 57025
Governing Agency
Union County Sheriff's Office
Inmate ID
Inmate / Booking ID — Not required
Last Verified
September 28, 2026
Facility Mailing and Service Information
Use the incarcerated person's full legal name and identification number if known. Include a complete sender return address and verify current Union County Jail correspondence rules before mailing.
Last verified: September 28, 2026
Verify current photo size, quantity and content restrictions before sending photographs.
Last verified: September 28, 2026
Verify current book, publication and package rules before sending.
Last verified: September 28, 2026
Do not send cash unless explicitly permitted. Use the facility's approved account-deposit method.
Last verified: September 28, 2026
Verify current visitor approval, identification and scheduling requirements before travel.
Last verified: September 28, 2026
How to Address Your Letter
Use the incarcerated person's full legal name and identification number if known. Include a complete sender return address and verify current Union County Jail correspondence rules before mailing.
About Union County Jail
Union County Jail is a South Dakota county, tribal, juvenile, municipal or detention facility record reviewed on 2026-09-28.