Johnson County New Century Adult Detention Center
Johnson County New Century Adult Detention Center
County Jail / Adult Detention FacilityMailing Address
[Inmate Full Name] — [CFN]
c/o Smart Communications
Johnson County Sheriff's Office
P.O. Box 9176
Seminole, FL 33775-9176
c/o Smart Communications
Johnson County Sheriff's Office
P.O. Box 9176
Seminole, FL 33775-9176
Physical Address
27745 W. 159th Street, New Century, KS 66031
Governing Agency
Johnson County Sheriff's Office
Inmate ID
CFN — Required
Last Verified
September 27, 2026
Facility Mailing and Service Information
Non-privileged general mail must be addressed to Inmate Name - Inmate CFN, c/o Smart Communications, Johnson County Sheriff's Office, P.O. Box 9176, Seminole, FL 33775-9176. Mail is processed off-site and delivered on secure kiosks/tablets. Legal mail and pre-approved publications use the Johnson County Adult Detention Center, 101 N. Kansas Ave., Olathe, KS 66061.
Source: Official sourceLast verified: September 27, 2026
Johnson County requires photographs to be uploaded through Smart Communications; mailed photos are not handled as ordinary paper photo enclosures.
Source: Official sourceLast verified: September 27, 2026
Books, newspapers and magazines require pre-approval and must be sent directly from the publisher/bookstore through USPS to Johnson County Adult Detention Center, 101 N. Kansas Ave., Olathe, KS 66061.
Source: Official sourceLast verified: September 27, 2026
Do not send money through ordinary MailGuard correspondence. Use Johnson County's approved inmate deposit service.
Source: Official sourceLast verified: September 27, 2026
Verify current custody, visitor approval requirements and the current visitation or video-visitation schedule before traveling.
Source: Official sourceLast verified: September 27, 2026
How to Address Your Letter
Non-privileged general mail must be addressed to Inmate Name - Inmate CFN, c/o Smart Communications, Johnson County Sheriff's Office, P.O. Box 9176, Seminole, FL 33775-9176. Mail is processed off-site and delivered on secure kiosks/tablets. Legal mail and pre-approved publications use the Johnson County Adult Detention Center, 101 N. Kansas Ave., Olathe, KS 66061.
About Johnson County New Century Adult Detention Center
Johnson County New Century Adult Detention Center is a Kansas detention/corrections record reviewed for current mailing and facility status on 2026-09-27.