Mackinac County Jail
Mackinac County Jail
County Jail / Adult Detention FacilityMailing Address
[Inmate Full Legal Name] — [Inmate / Booking Number if known]
Mackinac County Jail
100 S. Marley Street, St. Ignace, MI 49781
Mackinac County Jail
100 S. Marley Street, St. Ignace, MI 49781
Physical Address
100 S. Marley Street, St. Ignace, MI 49781
Phone
Governing Agency
Mackinac County Jail
Inmate ID
Inmate / Booking Number — Not required
Last Verified
September 27, 2026
Facility Mailing and Service Information
Verify the inmate is currently housed at this county facility before mailing.
Use the inmate's full legal name and inmate/booking number if known and include the sender's complete first and last name and return address.
Incoming personal mail is subject to inspection and local security rules. Confirm current photograph, publication, package and money procedures before sending valuable or irreplaceable originals.
Use the inmate's full legal name and inmate/booking number if known and include the sender's complete first and last name and return address.
Incoming personal mail is subject to inspection and local security rules. Confirm current photograph, publication, package and money procedures before sending valuable or irreplaceable originals.
Source: Official sourceLast verified: September 27, 2026
Confirm current photograph size, quantity, content and print-type restrictions before mailing.
Source: Official sourceLast verified: September 27, 2026
Confirm current approved source, binding and package rules before ordering books, magazines or parcels.
Source: Official sourceLast verified: September 27, 2026
Do not place cash in ordinary correspondence unless specifically authorized. Confirm the facility's current approved inmate-account deposit method.
Source: Official sourceLast verified: September 27, 2026
Verify current custody, visitor approval/registration requirements, identification rules and current visitation/video-visitation schedule before traveling.
Source: Official sourceLast verified: September 27, 2026
How to Address Your Letter
Verify the inmate is currently housed at Mackinac County Jail before mailing.
Use:
[Inmate Full Legal Name] — [Inmate / Booking Number if known]
Mackinac County Jail
100 S. Marley Street, St. Ignace, MI 49781
Include the sender's complete first and last name and return address. Confirm current local restrictions before sending photos, publications, packages, money or irreplaceable originals.
Use:
[Inmate Full Legal Name] — [Inmate / Booking Number if known]
Mackinac County Jail
100 S. Marley Street, St. Ignace, MI 49781
Include the sender's complete first and last name and return address. Confirm current local restrictions before sending photos, publications, packages, money or irreplaceable originals.
About Mackinac County Jail
Mackinac County Jail is the current county jail in St. Ignace.