Boise County Jail
Boise County Jail
County JailMailing Address
[Recipient Full Name] — [Inmate ID / Booking Number]\nBoise County Sheriff's Office / Jail
[Inmate Full Name]
P.O. Box 189
Idaho City, ID 83631
[Inmate Full Name]
P.O. Box 189
Idaho City, ID 83631
Physical Address
3851 Highway 21, Idaho City, ID 83631
Phone
Governing Agency
Boise County Sheriff's Office
Inmate ID
Inmate ID / Booking Number — Not required
Last Verified
September 29, 2026
Facility Mailing and Service Information
Use the inmate's full legal name and ID/booking number if known. Verify current jail mail rules before sending.
Source: Official sourceLast verified: September 29, 2026
Verify current photograph restrictions before mailing.
Source: Official sourceLast verified: September 29, 2026
Verify current publication/package rules before ordering.
Source: Official sourceLast verified: September 29, 2026
Do not send cash with ordinary correspondence unless the facility expressly allows it. Use the current approved inmate-account deposit method.
Source: Official sourceLast verified: September 29, 2026
Verify current visitation approval, identification, scheduling and facility rules before travel.
Source: Official sourceLast verified: September 29, 2026
How to Address Your Letter
Use the inmate's full legal name and ID/booking number if known. Verify current jail mail rules before sending.
About Boise County Jail
Boise County Sheriff's Office currently lists 3851 Highway 21 and P.O. Box 189, Idaho City.