Humboldt County Correctional Facility
Humboldt County Correctional Facility
County Correctional FacilityMailing Address
[Inmate Full Name] c/o
Humboldt County Correctional Facility
901 5th Street
Eureka, CA 95501
Humboldt County Correctional Facility
901 5th Street
Eureka, CA 95501
Physical Address
901 5th Street, Eureka, CA 95501
Phone
Governing Agency
Humboldt County Sheriff's Office
Inmate ID
Inmate ID / Booking Number — Not required
Last Verified
September 29, 2026
Facility Mailing and Service Information
A valid return address including sender first and last name is required. Address mail to the inmate's full name c/o Humboldt County Correctional Facility, 901 5th Street, Eureka, CA 95501.
Source: Official sourceLast verified: September 29, 2026
No Polaroid photos, obscene content, gang materials, stickers or stamps.
Source: Official sourceLast verified: September 29, 2026
Softcover books, magazines and newspapers are accepted only when mailed directly from the publisher.
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
A valid return address including sender first and last name is required. Address mail to the inmate's full name c/o Humboldt County Correctional Facility, 901 5th Street, Eureka, CA 95501.
About Humboldt County Correctional Facility
Current Humboldt County Correctional Facility in Eureka.