Kern Valley State Prison Overview
Kern Valley State Prison, or KVSP, is a California Department of Corrections and Rehabilitation institution at 3000 West Cecil Avenue in Delano. It is one of the major state-prison facilities physically located in Kern County, but it is outside the Kern County Sheriff's Office jail system. That means a person at KVSP is searched through CDCR CIRIS. A KCSO booking number, if one exists from an earlier arrest, is not the main prison identifier after commitment to state custody.
CDCR describes KVSP as a Level IV prison with four semi-autonomous 180-design facilities, two stand-alone Administrative Segregation Units, a lethal electrified perimeter fence, and a Level I Minimum Support Facility. The Level I portion opened in June 2005, and the Level IV portion opened in July 2005. This profile makes KVSP materially different from nearby North Kern State Prison and Wasco State Prison-Reception Center, which have major reception-center roles. KVSP is best framed as a high-security state-prison page, not as an intake or county-booking page.
Kern Valley State Prison Population
CDCR's TPOP1 report for April 15, 2026 listed Kern Valley State Prison with a population of 3,279, design capacity of 2,448, staffed capacity of 3,574, and occupancy of 133.9 percent of design capacity. These figures come from CDCR state-prison reporting and should be cited as a dated snapshot. They should not be added to Kern County jail ADP unless the page plainly defines a broader category such as all detention facilities physically in Kern County.
The population number also shows why current-location checks matter. A person committed from Kern County may pass through a reception center and later transfer to KVSP, or may leave KVSP for another CDCR institution. The CDCR location field is the live practical answer for mail and visits.
Kern Valley State Prison Lookup
The correct public lookup route is CDCR CIRIS. CIRIS is the statewide CDCR search for people in California prison custody. CA.gov describes CIRIS results as including name, CDCR number, age, current location, commitment counties, admission date, and parole hearing dates or outcomes when those fields are available. For a person believed to be at Kern Valley State Prison, the current location field should identify KVSP or another CDCR location.
- Search by CDCR number first if the number is known from court, prison, or family records.
- Use first and last name if the CDCR number is unknown; add a middle name to narrow common names.
- Confirm that the current location says Kern Valley State Prison before sending mail or scheduling a visit.
- Compare commitment county and admission date when several results have similar names.
- Use CDCR Identification Unit help at (916) 445-6713 on weekdays if CIRIS does not resolve the search.
The KCSO roster remains useful only for county jail custody and earlier booking information. The Kern County jail inmate records page explains that county system. ICE detainees in Kern County use ODLS, and federal sentenced inmates use BOP. Mixing those systems is the most common lookup mistake.
| Record System | Identifier | Best Use |
|---|---|---|
| CDCR CIRIS | CDCR number or name | KVSP and other state-prison custody |
| KCSO Inmate_Info | Booking number or name | Kern County jail custody before transfer |
| VINELink | Name and agency search | Victim notification and custody-change fallback |
Kern Valley State Prison Contact
Use the institution contact for KVSP-specific mail, visiting, and housing questions. The staff mailing address differs from the incarcerated-person mail boxes, so send prison mail only after the current facility and CDCR number are confirmed. CDCR facility pages and the CDCR family-contact pages are the governing sources, not county jail mail rules.
Kern Valley State Prison
3000 West Cecil Avenue
Delano, CA 93216-6000
(661) 721-6300
Staff P.O. Box 3130, Delano, CA 93216-6000
Kern Valley State Prison Visiting
KVSP visits follow CDCR visiting rules. Visitors generally need approval and must follow CDCR scheduling, identification, dress, and conduct rules. Because KVSP includes Level IV facilities and administrative segregation units, housing status can affect whether a visit is available and what type of visit can be scheduled. County jail video visits through Securus do not apply to KVSP.
| Step | What To Confirm | Why It Matters |
|---|---|---|
| Approval | Visitor approval through CDCR | Unapproved visitors may be turned away. |
| Current location | CIRIS location says KVSP | Transfers can occur within CDCR. |
| Housing status | Facility and custody restrictions | Level IV or ASU placement may change visit rules. |
| Schedule | CDCR visiting notices | Institution status can change before travel. |
Note: Confirm approval and institution visiting status before traveling to Delano.
Kern Valley State Prison Mail
CDCR mail should include the incarcerated person's full name, CDCR number, institution name, and the correct P.O. Box. KVSP uses separate mail boxes for facilities A, B, C, D, M, ASU1, and ASU2. That is a strong reason to check the current housing or call the prison before mailing important papers. If the CDCR number is unknown, CIRIS should be searched before mail is addressed.
| Mail Route | Address Detail |
|---|---|
| Facility A | P.O. Box 5101, Delano, CA 93216 |
| Facility B | P.O. Box 5102, Delano, CA 93216 |
| Facility C | P.O. Box 5103, Delano, CA 93216 |
| Facility D | P.O. Box 5104, Delano, CA 93216 |
| Facility M | P.O. Box 5105, Delano, CA 93216 |
| ASU1 / ASU2 | P.O. Box 5107 / P.O. Box 5106, Delano, CA 93216 |
CDCR state-prison phone and money processes differ from Kern County jail systems. CDCR states that state-prison audio calls are free as of January 1, 2023. For funds and packages, use current CDCR family resources or the institution's current instructions rather than KCSO Access Corrections or Securus jail guidance.
Kern Valley State Prison Custody
KVSP is important in Kern County inmate research because it is physically in the county but serves the statewide sentenced-prison population. The prison's Level IV design and administrative segregation units mean many people held there have different custody rules from people at county facilities or reception centers. Level IV is a high-security CDCR classification. Administrative segregation refers to separate housing used under prison rules when security, safety, or investigation concerns require it.
People do not enter KVSP through the same booking route used at Lerdo Justice Facility. After sentencing, CDCR receives the person, compiles classification information, and assigns a prison placement. A person may be sent to North Kern or Wasco for reception processing before any longer placement. A current CIRIS result should therefore be treated as the controlling public location record.
About Kern Valley State Prison
KVSP's CDCR page connects the prison to Delano's agricultural region, including table grapes, citrus, festivals, and local murals. Those details help place the prison within northern Kern County, but they do not change the record rules. Kern Valley State Prison remains a CDCR facility, and lookup, visiting, mail, and money questions should be routed through CDCR. Use the prison phone for facility-specific issues and CIRIS for the public location search.
Note: Use CDCR sources for KVSP; Kern County jail roster rules do not govern this state prison.
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