Imperial County Regional Adult Detention Facility (RADF)
Imperial County Regional Adult Detention Facility (RADF)
County Adult Detention FacilityMailing Address
[Incarcerated Person Name] — [SPN#]
Imperial County Jail, CA
P.O. Box 247
Phoenix, MD 21131
Imperial County Jail, CA
P.O. Box 247
Phoenix, MD 21131
Physical Address
1328 Sperber Road, El Centro, CA 92243
Governing Agency
Imperial County Sheriff's Office
Inmate ID
SPN — Required
Last Verified
September 29, 2026
Facility Mailing and Service Information
Personal mail must include the incarcerated person's name and SPN# and be sent to Imperial County Jail, CA, P.O. Box 247, Phoenix, MD 21131. Legal mail goes directly to 1328 Sperber Road, El Centro, CA 92243.
Source: Official sourceLast verified: September 29, 2026
Photographs sent as personal mail are subject to Imperial County's current scanned-mail and content rules.
Source: Official sourceLast verified: September 29, 2026
Books/packages follow separate current jail procedures; verify approved-source rules before ordering.
Source: Official sourceLast verified: September 29, 2026
Use Imperial County's approved inmate deposit service; do not include cash in ordinary correspondence.
Source: Official sourceLast verified: September 29, 2026
Verify current Imperial County Jail visitation rules and schedule before travel.
Source: Official sourceLast verified: September 29, 2026
How to Address Your Letter
Personal mail must include the incarcerated person's name and SPN# and be sent to Imperial County Jail, CA, P.O. Box 247, Phoenix, MD 21131. Legal mail goes directly to 1328 Sperber Road, El Centro, CA 92243.
About Imperial County Regional Adult Detention Facility (RADF)
RADF is a current Imperial County adult jail facility; routine personal mail is processed through the Phoenix, Maryland mail center.