Mercer County Jail
Mercer County Jail
County Correctional Facility / JailMailing Address
Mercer County Jail
[Inmate Full Legal Name], [BN#]
P.O. Box 247
Phoenix, MD 21131
[Inmate Full Legal Name], [BN#]
P.O. Box 247
Phoenix, MD 21131
Physical Address
55 Thompson Road, Mercer, PA 16137
Phone
Governing Agency
County correctional authority - Mercer County Jail
Inmate ID
Booking Number (BN) — Required
Last Verified
September 25, 2026
Facility Mailing and Service Information
Ordinary personal mail is processed through an off-site scanning or digital-mail center. Use the exact inmate name and required booking/inmate number, plus the complete sender return address.
Do not send legal mail, publications, money orders or packages to the personal-mail scanning address unless the facility specifically authorizes it. Those categories can use a different direct-facility address.
Do not send legal mail, publications, money orders or packages to the personal-mail scanning address unless the facility specifically authorizes it. Those categories can use a different direct-facility address.
Source: Official sourceLast verified: September 25, 2026
When photographs are permitted, follow the facility's current size, quantity and content rules and the required personal-mail processing route.
Source: Official sourceLast verified: September 25, 2026
Do not send publications or packages to the personal-mail scanning address unless authorized. Confirm the current approved publisher/source and direct-facility routing.
Source: Official sourceLast verified: September 25, 2026
Do not place cash, checks or money orders in scanned personal mail. Use the facility's current approved deposit method.
Source: Official sourceLast verified: September 25, 2026
Verify current custody and the facility's current visitation registration, identification, schedule and video-visitation rules before traveling.
Source: Official sourceLast verified: September 25, 2026
How to Address Your Letter
Verify the inmate is currently housed at Mercer County Jail before mailing.
Personal mail:
Mercer County Jail
[Inmate Full Legal Name], [BN#]
P.O. Box 247
Phoenix, MD 21131
Use the inmate's full legal name and required inmate/booking number. Include the sender's complete first and last name and full return address.
Legal mail, publications, money orders and packages may use a different direct-facility address. Do not send those items to the personal-mail processing center unless specifically authorized.
Personal mail:
Mercer County Jail
[Inmate Full Legal Name], [BN#]
P.O. Box 247
Phoenix, MD 21131
Use the inmate's full legal name and required inmate/booking number. Include the sender's complete first and last name and full return address.
Legal mail, publications, money orders and packages may use a different direct-facility address. Do not send those items to the personal-mail processing center unless specifically authorized.
About Mercer County Jail
Mercer County Jail is a current Pennsylvania county correctional facility. Ordinary personal mail is processed separately from special/legal mail.