Lyon County Jail
Lyon County Jail
County Jail / Adult Detention FacilityMailing Address
[Inmate Full Legal / Booked Name] — [Inmate / Booking Number if known]
Lyon County Jail
410 S. Boone Street, Rock Rapids, IA 51246
Lyon County Jail
410 S. Boone Street, Rock Rapids, IA 51246
Physical Address
410 S. Boone Street, Rock Rapids, IA 51246
Phone
Governing Agency
Lyon County Sheriff's Office
Inmate ID
Inmate / Booking Number — Not required
Last Verified
September 27, 2026
Facility Mailing and Service Information
Use the inmate's full booked/legal name and send to Lyon County Jail, 410 S. Boone Street, Rock Rapids, IA 51246. Include the sender's complete name and return address.
Source: Official sourceLast verified: September 27, 2026
Confirm the jail's current photograph size, quantity and content restrictions before mailing. Do not send irreplaceable originals.
Source: Official sourceLast verified: September 27, 2026
Confirm the jail's current publisher/vendor, binding and package rules before ordering books, magazines, newspapers or parcels.
Source: Official sourceLast verified: September 27, 2026
Lyon County states that friends/family may send a check payable to the inmate or a money order for the inmate's canteen account; verify current instructions before mailing.
Source: Official sourceLast verified: September 27, 2026
Verify current custody, visitor registration or approval requirements and the current visitation or video-visitation schedule before traveling.
Source: Official sourceLast verified: September 27, 2026
How to Address Your Letter
Verify the person is currently housed at Lyon County Jail before mailing. Use the inmate's full booked/legal name and inmate or booking number when known. Mail to: Lyon County Jail, 410 S. Boone Street, Rock Rapids, IA 51246. Include a complete sender return address.
About Lyon County Jail
Lyon County Jail is the current county jail / adult detention facility serving Lyon County, Iowa.