West Valley Detention Center
West Valley Detention Center
County Detention CenterMailing Address
9500 Etiwanda Avenue, Rancho Cucamonga, CA 91739
Physical Address
9500 Etiwanda Avenue, Rancho Cucamonga, CA 91739
Phone
Governing Agency
San Bernardino County Sheriff's Department
Inmate ID
Booking Number — Required
Last Verified
September 29, 2026
Facility Mailing and Service Information
Verify the person's current custody/placement and identifier before mailing. Use the recipient's full legal name and follow the facility's current correspondence rules.
Source: Official sourceLast verified: September 29, 2026
Verify current photograph size, quantity and content restrictions before mailing.
Source: Official sourceLast verified: September 29, 2026
Verify current publication/package source and content rules before ordering.
Source: Official sourceLast verified: September 29, 2026
Do not send cash with ordinary correspondence. Use the current approved account-deposit method.
Source: Official sourceLast verified: September 29, 2026
Verify current visitor approval, identification, scheduling and facility rules before travel.
Source: Official sourceLast verified: September 29, 2026
How to Address Your Letter
Verify the person's current custody/placement and identifier before mailing. Use the recipient's full legal name and follow the facility's current correspondence rules.
About West Valley Detention Center
West Valley Detention Center is a current San Bernardino County detention facility.