Knox County Jail Overview
Knox County Jail is operated by the Knox County Sheriff's Office as the local adult detention facility for Knox County. The official sheriff page lists the jail at 104 S. Stewart Street in Benjamin and describes it as west of the courthouse, with the sheriff office nearby at 111 E Hayes Street. It is not a state prison, federal prison, or ICE detention center. It is the county jail used for local arrests, pretrial detention, short county-jail sentences, warrant holds, and custody categories reported by the county to the Texas Commission on Jail Standards.
The people held through this jail can include adult pretrial defendants, people arrested by the sheriff's office or local police departments, defendants held on felony or state-jail-felony matters before transfer, and people affected by contract or housed-elsewhere arrangements. The Knox County sheriff page gives the public jail phone and address, while the Texas Commission on Jail Standards population reports supply the capacity and monthly population figures. No official county source located for this research published housing unit names, annual booking totals, medical unit details, work-release rules, or a separate detention annex.
Knox County Jail Capacity and Population
TCJS is the state source for Texas county jail capacity and population reporting under Government Code Chapter 511. In the June 2026 County Jail Population workbook, the Knox row reported 14 beds and a total jail population of 3 on June 1, 2026. That same row reported 2 housed-elsewhere inmates and 1 in-state contract inmate, which matters for families because a person connected to a Knox County arrest may not be physically inside the Benjamin jail at the moment of a call or transfer check.
The TCJS incarceration-rate workbook for June 1, 2026 used a Knox County population of 3,255, a jail population figure of 6, and an incarceration rate of 1.84. Because Knox County Jail is small, one or two bookings or transfers can change the capacity percentage substantially. TCJS monthly rows reviewed for late 2025 through June 2026 showed the jail operating below the listed 14-bed capacity, but those reports are not a live roster.
How to Look Up an Inmate at Knox County Jail
No official Knox County online jail roster, current-bookings page, released-inmates list, or public mugshot gallery was located on the county or sheriff site during the research. The correct county lookup path is therefore contact-based. Start with the jail phone for current custody, then use the sheriff office for written records requests if needed. Use VINELink Texas for custody-status notifications where Knox County data is available. If the person has been sentenced to a Texas prison, use the TDCJ Inmate Information Search instead of treating the county jail as the current holder.
- Call Knox County Jail at (940) 459-2041 and ask for the person by full legal name and date of birth, especially if the arrest was recent.
- If staff cannot provide an administrative record by phone, contact the sheriff office at (940) 459-2211 or send a Texas Public Information Act request through the sheriff office mailing address, fax, or in-person office.
- Ask whether the person is physically in Knox County Jail, has been released, is waiting on magistration or bond, or is housed elsewhere for Knox County.
- If the person is not in local custody, check TDCJ for sentenced state-prison custody, BOP for sentenced federal custody, ICE ODLS for immigration custody, and VINELink for notification options.
Knox County Jail Address and Contact
The jail line is the most direct published contact for current custody, visitation questions, mail instructions, and bond status after booking. The sheriff office line is the administrative fallback for public-information requests, records questions, or situations where a caller needs to reach the agency rather than the jail floor. The county sheriff page lists the jail and sheriff office as separate Benjamin locations, and gives the sheriff mailing address as PO Box 257.
Knox County Jail
104 S. Stewart Street
Benjamin, TX 79505
(940) 459-2041
Call for current custody, visitation, mail, bond, and release questions.
Knox County Sheriff's Office
111 E Hayes Street
PO Box 257, Benjamin, TX 79505-0257
(940) 459-2211
Fax: (940) 459-2016
Visiting Someone at Knox County Jail
Knox County does not publish a detailed official jail visitation schedule, visitor approval page, dress code, minor-child rule, attorney-visit procedure, or video visitation vendor in the sources reviewed. Treat visitation as a call-ahead process. Before traveling to Benjamin, call the jail and confirm that the person is still held there, visits are available for that classification status, identification is acceptable, minors may attend, and personal property rules are clear.
| Topic | Published Knox County Result | What to Do |
|---|---|---|
| In-person visits | Schedule not published | Call (940) 459-2041 before travel. |
| Video visits | No official vendor or schedule located | Ask whether video visits are currently available. |
| Visitor approval | Not published | Ask whether an approved visitor list or background check applies. |
| Photo ID | Not published | Bring government photo ID unless the jail gives different instructions. |
| Attorney visits | Procedure not published | Attorneys should call the jail or sheriff office for professional visit instructions. |
Mail, Phone, and Money at Knox County Jail
The official sources reviewed did not identify a Knox County Jail commissary vendor, deposit website, kiosk, tablet program, video-call provider, phone provider, money-order payee, or published fee schedule. Do not assume a national jail vendor unless the jail confirms it. For mail, use the inmate's full legal name and verify the address format before sending anything. Also ask whether a booking number is required and whether photos, books, money orders, or legal mail require special handling.
| Service | Provider / Detail |
|---|---|
| Mail Address | Not published as a full inmate-mail format. Call the jail to verify inmate name, booking number, and address before mailing. |
| Phone / Video | No official vendor located. Ask whether collect, prepaid, or video calls are available and what fees apply. |
| Commissary | No official commissary vendor located. Call for current deposit method, limits, and fees. |
| Money Deposit | No Knox online deposit portal found in official sources. Ask whether cash, money order, kiosk, or another method is accepted. |
Booking and Intake at Knox County Jail
A Knox County booking usually begins after an arrest by the sheriff's office, a municipal police department, DPS, or another law enforcement agency. Jail staff confirm identity, check warrants, inventory property, perform a security search, create the booking record, and record available charge, warrant, agency, case, and bond information. Booking photos and fingerprints are normal booking steps, but Knox County does not publish an official online booking-photo gallery in the sources found.
Texas Code of Criminal Procedure Article 15.17 controls the prompt magistrate warning process after arrest, including rights warnings and bail issues. Bond is governed by Chapter 17. Knox County does not publish a local bond schedule or online payment portal in the reviewed sources, so families should call the jail after booking and magistration to ask whether bond has been set, what type is allowed, where it must be posted, and whether another hold prevents release.
Bond types may include cash bond, surety bond, personal bond, property bond where allowed, or no-bond status. A listed bond does not guarantee immediate release if there is another county warrant, probation or parole hold, TDCJ matter, federal hold, or ICE detainer. Formal charges may also change after booking when the county attorney, district attorney, or court files or reviews the case.
About Knox County Jail
Knox County Jail should be understood as a small local jail in Benjamin, not as a large searchable jail network. The official county site gives contact details and location information, while TCJS supplies the most reliable published jail population figures. The county sheriff page lists Sheriff Christopher Mendoza on the inspected page, but leadership pages can change or lag, so the sheriff page itself should be treated as the current official reference.
State, federal, and immigration custody use different systems. No TDCJ prison unit, BOP federal prison, or ICE detention center was identified as physically located in Knox County from the official sources reviewed. A Knox County defendant sentenced to state prison is searched through TDCJ after transfer. A federal inmate is searched through the BOP inmate locator. An immigration detainee is searched through the ICE Online Detainee Locator System. The U.S. Marshals Service Northern District of Texas may be relevant for federal pretrial custody.
For records that are not posted online, Texas Government Code Chapter 552, the Texas Public Information Act, is the general request framework. A written request should identify the person, date of birth if known, arrest or booking date, arresting agency, case or warrant number, and the specific records sought, such as booking sheet, charge list, bond information, arrest report basic information, or booking photograph. Active investigations, juvenile information, medical or mental-health information, victim details, confidential identifiers, sealed records, and expunged records may be withheld or redacted.
Note: Confirm custody, visitation availability, mail format, and bond details with Knox County Jail before traveling or sending money.