Musselshell Co Detention in Roundup, MT is a county detention facility operated by the Musselshell County Sheriff's Office. Most people here are awaiting trial or sentencing - this is not a prison, and most stays are measured in days or months, not years. If someone you care about was just booked here, you have questions. Start with the one that matters most right now.
If you are not certain they are there, the fastest way to confirm is the Musselshell County inmate search or InmateAid's inmate locator, which searches across Montana facilities by name.
Booking takes time - sometimes several hours after arrest. If the search comes back empty, wait a few hours and try again before assuming they have been transferred somewhere else. You can also pull their arrest record and booking details to confirm the charges and facility assignment. For the most direct answer, call Musselshell Co Detention at 406-323-1402.
Most people booked at Musselshell Co Detention appear before a judge within 24 to 48 hours. At that first appearance the judge sets the bail amount - or denies bail - based on the charges, the person's history, and whether they are considered a flight risk.
If bail is set, your family member can be released by paying the full amount or by using a bail bondsman, who typically charges 10 percent of the total as a non-refundable fee. If bail is denied or the amount is unaffordable, they remain at Musselshell Co Detention until the case resolves. InmateAid's bail and bond guide walks through every option including what to do if you cannot afford a bondsman.
Right after arrest, your family member goes through intake at Musselshell Co Detention - identity verification, medical screening, property inventory, and classification. Classification places them in a housing unit based on the charges, prior record, and intake behavior. It is not a punishment. It is how the facility manages a population that ranges from people picked up on minor warrants to individuals facing serious charges.
For the first 24 to 48 hours, phone access and visitation are typically unavailable while booking completes. Once they are assigned to a housing unit, those channels open up. InmateAid's what happens in jail guide covers the full intake process step by step so you know what to expect.
Your family member calls you - you cannot call them. Calls from Musselshell Co Detention go through Securus Tech® and all calls are recorded except attorney calls. Set up a Securus Tech® account before the first call so the connection goes through without delay.
Phone contact is more important than most people realize going into this. A regular call - even a short one - makes a measurable difference in how someone holds up inside. Do not let the setup friction stop you. Visit InmateAid's jail calls page for step-by-step account setup, current rate information, and tips for keeping funds available.
Visitation hours at Musselshell Co Detention are set by the facility and can change without much notice. Before making the trip, call 406-323-1402 to confirm current hours, any advance registration requirements, and what you are allowed to bring.
The most common mistake families make is showing up without confirming first - and that results in a wasted trip and a missed visit for your family member. General rules across most Montana county jails: dress conservatively, avoid colors that resemble inmate uniforms, leave your phone in your car, and bring valid government-issued ID. Children may be permitted with specific requirements depending on the facility. InmateAid's visitation guide has a full checklist you can run through before you go.
Visitation at the Musselshell County Detention Center follows strict regulations to ensure security and order. Visiting hours are scheduled for
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Tuesdays from 9:00 a.m. to 11:00 a.m.
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Thursdays from 3:00 p.m. to 5:00 p.m.
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Sundays from 1:30 p.m. to 2:30 p.m.
Only immediate family members—including spouses, parents, children, siblings, and grandparents—are permitted to visit on Sundays or when no detention officer is available to supervise, with no exceptions. Inmates may receive visits from up to two non-family members aged 18 or older per visiting day, provided an officer is available to supervise, excluding Sundays. All visitors must present valid photo identification, sign the visitor log, and are subject to a search before entering the secure area. Visits are conducted on a first-come, first-served basis, and if visiting time expires with the remaining visitors waiting, they must return on the next scheduled visitation day.
Strict security measures are enforced, prohibiting the entry of cell phones, purses, coats, or weapons of any kind into secure areas. Each visit is limited to ten minutes unless a supervisor grants an extension, and only one visitor is permitted at a time. Officers may terminate visits at any time for security reasons. Unauthorized items, including weapons and contraband, cannot be transferred to or from an inmate, and violations will be prosecuted under MCA 45-7-307. Contact visits are not allowed unless specifically approved by the Sheriff. Attorneys and clergy members may visit inmates at reasonable hours outside of the regular visitation schedule. Deputies will not pass notes, messages, or letters to inmates unless received through the U.S. Postal Service. While inmates may receive clean clothing for trial purposes, all other items require supervisor approval. The facility does not accept food, drinks, or over-the-counter medication unless specifically authorized by a supervisor.
Money on the books - also called the commissary or trust account - gives your family member access to hygiene items, snacks, phone time, and postage. It is one of the most practical things you can do and it has a direct effect on their daily comfort.
Musselshell Co Detention accepts deposits through approved channels that typically include online deposit, phone deposit, or a kiosk at the facility. Use your family member's full legal name and booking number exactly as they appear in the jail's system - any error in the name or number will delay or reject the deposit. InmateAid's send money page lists the specific deposit methods accepted at Musselshell Co Detention and walks through the process.
A letter or a printed photo costs almost nothing to send and means far more than most people outside appreciate. Musselshell Co Detention accepts incoming mail addressed to your family member at 820 Main St. Put their full legal name and booking number on every piece of mail.
Standard rules at most Montana county jails: plain white paper only, no staples, no glitter, no stickers, no colored ink. Photos should be standard print size with nothing written on the back. Mail that does not meet the facility's standards will be rejected - and the facility may not notify you that it was. Keep it simple.
InmateAid's send mail service lets you write and send directly from your phone or computer. We print on approved stock and mail it for you, so rejection for formatting is not a risk.
Books and magazines must come new, ordered directly from the publisher or through an online retailer - not shipped from your home address. Facilities require this to prevent contraband. Order through Amazon or directly from the publisher. Anything shipped from a personal address will be turned away.
County jail procedures, visitation rules, phone rates, inmate search tools, bail processes, and what happens at release all vary by state. Montana has its own rules and its own agencies, and what applies in one state does not always apply here.
InmateAid's Montana prison resources hub covers all of it - written specifically for families navigating the Montana system. Start there when you need answers that go beyond what this facility page covers.
County jail time is hard in a way that is different from anything else. The uncertainty - not knowing how long, not knowing what comes next - wears on everyone. What you can control is the connection. Calls, letters, visits, money on the books. Every one of those things tells your family member that someone out here is paying attention and is not going anywhere.
InmateAid was built for exactly this. Use us.