Musselshell County Detention Center Criminal Court Process
Criminal Court Process for Musselshell County Montana
Musselshell County Criminal Court Process
Adults waiting on court are held at the Musselshell County Detention Center, 820 Main Street, Roundup, MT 59072. Justice Court takes misdemeanors and the start of a felony. Felonies then move to the 14th Judicial District Court at 506 Main Street, Roundup, MT 59072, which also serves Golden Valley, Meagher and Wheatland counties. Below are the steps a case takes from first hearing to sentence.
Try the inmate lookup first. For the custody side, our Recent Arrests page shows how to confirm someone is held, look for active warrants, understand the charges, request a mugshot, get a public defender and claim property.
Phone the jail at 406-323-1402 and ask which judge has the case and when it meets next. Justice Court answers at 406-323-1078, and the Clerk of District Court at 406-323-1413. Our bail page covers getting out while the case is open.
1. Which Musselshell County court will hear the case?
Where a case lands comes down to the charge.
- Justice Court is the main misdemeanor court for the whole county. Deputies, Highway Patrol troopers, game wardens and state transportation and livestock officers all write tickets into it. The basic limit is crimes punishable by half a year in jail or a $500 fine, and some bigger misdemeanors are shared with District Court (MCA 3-10-303).
- Roundup City Court and Melstone City Court take local ordinance violations and misdemeanors committed in town (MCA 3-11-103). The justice of the peace presides over both.
- District Court owns every felony. A felony, in Montana, means the possible sentence reaches past a year in state prison (MCA 45-2-101).
- Youth Court, run by the district judge, covers charges against minors.
Felony cases nearly always open with a hearing in Justice Court, and then the paperwork goes on to District Court.
↑ Back to the question list2. Where do the Musselshell County courts meet?
All of the state courts are in Roundup:
- 14th Judicial District Court and its clerk, 506 Main Street, Roundup, MT 59072. The judge's office line is 406-323-1701. The clerk's line is 406-323-1413, and the email is clerkofcourt.musselshell@mt.gov. One district judge covers four counties, so ask the clerk which days court is set here.
- Justice Court, also sitting as the two town courts, 406-323-1078. County pages list the Timber Tracts Building, 26 Main St., Roundup, MT 59072, while the state court locator lists 34 3rd Ave. West, Roundup, MT 59072, which is City Hall. Call ahead to learn which door to use. The mailing address is P.O. Box 565, Roundup, MT 59072.
The Justice Court clerk works weekdays from 8:00 a.m. to 4:30 p.m. The judge is usually in Monday through Wednesday, and ticket arraignments and first appearances run Mondays and Wednesdays.
↑ Back to the question list3. What about arrests inside Roundup or Melstone?
Neither town has a police force. Both pay the Sheriff's Office to patrol inside town limits, so deputies make the arrests and file the tickets.
- A town ordinance case goes to the city court for that town. Both city courts share a judge and staff with Justice Court.
- The county seat's town code can be read in its ordinance library.
For town business that isn't about a case, the county seat's City Hall is at 406-323-2804 and the Town of Melstone at 406-358-2301. For case questions, call the court at 406-323-1078.
↑ Back to the question list4. What gets explained at the first court date?
State law requires the trip to a judge to happen "without unnecessary delay" (MCA 46-7-101). The justice of the peace usually holds it, either in person or by a video hookup from the jail. The judge must go over (MCA 46-7-102):
- what crimes are being charged
- the right to counsel, with one appointed at no cost for those who can't afford it
- how and when they might be released
- the right to say nothing, since any statement can be used in court later
- that guilty verdicts can cost a person their guns
- for a felony filed by complaint, a chance to ask the judge to test probable cause
The release decision comes out of this very hearing too (MCA 46-9-109).
↑ Back to the question list5. How does a misdemeanor or DUI case move ahead?
Justice Court is where the County Attorney files misdemeanor complaints. At arraignment the defendant answers the charge. If they deny it, the court picks a trial date, and a six-member jury is an option (MCA 46-17-201).
Once the plea is entered, the case must come to trial inside 6 months unless the defense asked for a delay or there is good cause. If not, it is thrown out for good (MCA 46-13-401). Some penalties under state law:
- First DUI: jail from a full day to half a year, and a fine between $600 and $1,000 (MCA 61-8-1007)
- Stealing property worth $1,500 or less: jail of up to half a year, a fine of up to $1,500, or both (MCA 45-6-301)
- A misdemeanor whose statute names no penalty: as much as half a year, a $500 fine, or both (MCA 46-18-212)
For a second or later DUI, the judge may order twice-daily breath tests at the Sheriff's Office as a release or sentence condition (MCA 44-4-1205).
↑ Back to the question list6. What are the steps in a Musselshell County felony case?
A felony usually follows this path:
- Initial appearance. The justice of the peace sets release terms.
- Charging. Justice Court may hold a preliminary examination of the evidence (MCA 46-10-105). Or the County Attorney can submit an affidavit to District Court and, with the judge's OK, file an "information," the paper that charges a felony (MCA 46-11-201).
- Arraignment in District Court, in open court, where the person enters a plea (MCA 46-12-201).
- Pretrial motions. Plea talks may also happen at this stage.
- Trial. A felony jury has 12 seats, and the verdict must be unanimous. If both sides sign off, the judge alone can decide (MCA 46-16-110).
- Sentencing.
When no other penalty is set by law, a felony can mean a prison term as long as 10 years and fines as high as $50,000 (MCA 46-18-213). Stealing more than $1,500 worth has the same 10-year ceiling. Possessing dangerous drugs can bring 5 years, though the law favors deferring the sentence on a first offense (MCA 45-9-102).
↑ Back to the question list7. Are family violence charges handled differently?
Yes. Montana adds extra steps for assault and threats at home:
- No quick bail. Charges of family or dating partner assault, strangulation, stalking or a protection order violation keep the person jailed until their first hearing (MCA 46-9-302).
- Automatic no-contact order. The accused may have to stay as far as 1,500 feet away. The order runs 72 hours, or until the first hearing (MCA 45-5-209).
- Rising penalties. Partner assault is charged as a felony starting with the third conviction, carrying as much as 5 years (MCA 45-5-206).
- Tracking. Felony-level stalking or partner assault points toward GPS monitoring if the equipment exists locally (MCA 46-9-108).
- Victim input. Before a dismissal, plea deal or release in these cases, the prosecutor must talk with the victim (MCA 46-24-104).
8. Which lawyers will be involved?
Charges here are filed by the County Attorney's Office, which is also the prosecutor for neighboring Golden Valley County. It is at 506 Main Street, Roundup, MT 59072, 406-323-2230, open weekdays 8:00 a.m. to 5:00 p.m. with a noon hour closure. When a local conflict comes up, the Attorney General's Prosecution Services Bureau may take the case, 406-444-2026.
On the defense side, the state pays for counsel when a person can't. The public defender's caseload includes felonies, youth matters and misdemeanors carrying possible jail. The Montana courts' resource guide for this county lists the Billings office, 207 N. Broadway, Suite 201, Billings, MT 59101, 406-256-6861. Use the online public defender form, and attach recent paychecks and bank records. A judge reviews who qualifies (MCA 47-1-111).
↑ Back to the question list9. What is Court Compliance?
Court Compliance is the county office that watches people the courts have released or sentenced with conditions. It is at 506 Main Street, Roundup, MT 59072, 406-323-2060. Both the Justice Court and District Court send adults and youths there.
- Pretrial check-ins, daily, weekly or monthly
- GPS house arrest and home monitoring, with violations sent to the Sheriff
- Urine and hair drug tests, Soberlink breath tests and alcohol ankle bracelets
- Classes such as defensive driving, aggression control and minor in possession programs
- Community service tracking
The person pays the posted fees. Examples are $100 for a hair test, $14 a day for Home Guard monitoring and $25 for each 50 hours of community service. Call the office to ask about payment plans or schedules.
↑ Back to the question list10. Where can families see the court calendar or case file?
Montana has two free public court websites. Search either one by the defendant's name or a case number. Here is which is which:
- Courts of limited jurisdiction portal, which covers justice and city courts
- District Court portal, which covers felony files
Youth matters and sealed records won't show up. When the portals turn up nothing, phone the clerk instead. Justice Court at 406-323-1078 has misdemeanor and town court dates. For felony hearing dates, phone 406-323-1413. Clerks find cases faster with a full name and birth date.
↑ Back to the question list11. How can I check for or clear a warrant?
Warrants anywhere in the county, including Roundup and Melstone, are served by the Sheriff's Office, because neither town has its own police. Call 406-323-1402 at any hour to ask if one is out. The state DOC offender search flags people wanted for leaving supervision as absconders or escapees. Filed cases, including missed hearings, can turn up on the lower court portal or the felony court portal. A lawyer can help you clear a warrant safely. Next, either get a new hearing date from the issuing court or surrender at 820 Main Street, Roundup, MT 59072. For a felony warrant, reach the district clerk at 406-323-1413.
↑ Back to the question list12. How are federal charges from Musselshell County handled?
Federal cases from here go to the Billings Division of the U.S. District Court for the District of Montana, at 2601 2nd Avenue North, Suite 1200, Billings, MT 59101. The clerk answers at 406-247-7000 on weekdays from 8:00 a.m. to 5:00 p.m.
- When a defendant first comes before a federal judge, a hearing decides whether they stay locked up until trial (18 U.S.C. 3142).
- Until trial, the U.S. Marshals keep federal defendants locked up and bring them to court. Its Billings office is in Suite 2300 of the same building, 406-200-6004.
- Release and sentencing reports are written by the federal probation office in Suite 1300, 406-657-6287.
- Read the docket on PACER. After sentencing, the Federal Bureau of Prisons inmate locator lists the prison.
13. What role does an immigration hold play?
The Montana prosecution goes forward with or without a detainer. Where a detainer matters is release day. Through Form I-247A, the agency asks that the person stay jailed for up to 48 hours after they would otherwise be released (8 CFR 287.7(d)).
- State law makes officers who hold a detainer arrest the person on it and give the reason (MCA 27-16-801).
- Someone with believable papers showing citizenship or lawful status must not be held on it.
- A 2025 change to the stop-and-frisk law allows officers, during a lawful stop, to ask about immigration status (MCA 46-5-401).
- The ICE check-in site for people from this county is at 2900 4th Avenue, Suite 205, Billings, MT 59101, 406-247-4083. Salt Lake City is the field office in charge.
- Use the ICE Online Detainee Locator to find someone in ICE custody.
14. What sentences can the judge choose from?
Montana judges have several options after a guilty plea or verdict (MCA 46-18-201):
- Deferred sentence. No sentence is handed down for a set period, which is a year at most on a misdemeanor and three on a felony. Good behavior can end with the charge dismissed, and the misdemeanor record is then sealed from public view (MCA 46-18-204).
- Suspended sentence. Time is ordered but put on hold, and it only kicks in if the person breaks the rules.
- Jail, prison or a fine, alone or combined, within the limits for that crime.
Anyone already convicted of a felony once is not eligible to have a new felony sentence deferred. For questions about fines or restitution, call the court that handled the case.
↑ Back to the question list15. Which prisons hold people sentenced here?
A felony commitment puts the person under the Montana Department of Corrections. Many sit in the local jail after sentencing while the state reviews their case. After that, the state decides on prison, a prerelease house or a treatment setting.
- Montana State Prison, 400 Conley Lake Road, Deer Lodge, MT 59722, 406-415-6126
- Montana Women's Prison, 701 South 27th Street, Billings, MT 59101, 406-247-5100
- Status and placement for any state inmate can be checked on the Montana offender search.
- Parole hearings: Board of Pardons and Parole, 1002 Hollenbeck Road, Deer Lodge, MT 59722, 406-846-1404.
Visiting and mail rules for each site appear in the Montana state prisons guide.
↑ Back to the question list16. How are charges against a minor handled?
When the accused is 17 or younger, the case is heard in Youth Court by the district judge (MCA 41-5-203). The public portals leave these cases out. A single juvenile probation officer serves Golden Valley, Meagher, Wheatland and this county, at 406-323-1714.
- Any detained youth is entitled to a probable cause hearing inside 24 hours, though weekends and holidays don't count (MCA 41-5-332).
- For the most serious crimes, prosecutors may seek adult charges against a youth who is 12 or older (MCA 41-5-206).
- No one younger than 16 can be housed in a state prison.
- Long-term state commitments for youths are served at Pine Hills Correctional Facility, 4 North Haynes Avenue, Miles City, MT 59301, 406-232-1377.
A parent's first call should be juvenile probation, which can say where the child is being held and when the hearing is.
↑ Back to the question list17. How do I get court files or a background check?
Court records are public in most adult cases, and each court keeps its own files:
- Felony files. The district clerk holds criminal records reaching back to 1911. Call 406-323-1413 to ask about copies.
- Justice Court runs criminal background checks for $25 for each name and birth date, 406-323-1078.
- Statewide history. The Montana Department of Justice offers a name search for $20 through its background check page, or $15 by mail.
Booking photos, bail records and jail rosters are public criminal justice information under state law (MCA 44-5-103). Investigative files are not.
↑ Back to the question list18. What help do crime victims in Musselshell County get?
The Musselshell/Golden Valley Victim Witness Assistance program works out of 506 Main Street, Roundup, MT 59072, 406-323-2540, on weekdays.
- Victims get a say. In a felony, or a case with an injury or a threat, the prosecutor must ask for their views before dropping charges, making a deal or agreeing to release (MCA 46-24-104).
- Sign up on VINELink or call 800-456-3076 for alerts on state felony offenders.
- The state can repay up to $25,000 in crime costs. The crime has to be reported to police within 72 hours, and the claim filed inside one year, 800-498-6455.
- YWCA Billings offers a 24-hour help line after domestic or sexual violence, 406-245-4472.
Criminal Court Process for Musselshell County Montana
Musselshell County Montana Criminal Court System - Definitions
It might be helpful to define some words that will be used on this site, when explaining the Montana, Musselshell County Court System and how it works. The definitions on this site are for general information and not legal advice. It is always preferred to follow information given by your attorney or local authorities.
If you scroll down below this content, and the listing of the courts in Musselshell County, you will find a simple flowchart diagram and a video that will help you visualize the stages of the Criminal Court Process.
Arrest is when Montana, Musselshell County, or local police take a person into custody and start the legal process. The arrested person may or may not be immediately jailed.
In less serious crimes, the person may only be given a citation ordering that they appear in municipal or Musselshell County court on a certain date. In cases involving more serious crimes, the person is usually placed in Musselshell County jail until an arraignment, or a judge decides the next step.
Booking is when the sheriff or local police gather information such as the detainee’s name, address and why the person is being arrested. Booking also includes fingerprinting, criminal history, investigation and verification of identity. Bail for lower-level crimes may be set right after booking so the arrested has the opportunity to “bail or bond out” before being detained.
The prosecution, sometimes called “the government” or “the people” or “the state” is the side that press the charges and seeks punishment for the offense. These are attorneys that work for the state of Montana, Musselshell County or a city or town. The prosecuting attorney for the county or the district is called the County Attorney. A U.S. Attorney prosecutes federal cases.
Jurisdiction is an important term in the court system that means whether a court has the obligation or duty or right to handle a case. For example, if you run a red light in your town or city, a municipal court would likely have jurisdiction over your case, but the next town or city over would not have jurisdiction over your case. If you attempted to flee from police when they attempted to stop you after you ran the red light, it becomes a more serious crime, and the municipal court might not have jurisdiction so you might be assigned to a higher-level court that has jurisdiction over the more serious crime. Jurisdiction varies from state to state and sometimes county to county.
Arraignment is when a judge determines whether or not the charges are supported by the prosecution’s initial evidence and tells the arrested what they are charged with, and the person says whether they are guilty or not guilty. At this time, the person is called the defendant, and the opposing side is called the prosecution. If there is reason to believe that the arrested is guilty, the judge will set bail conditions or send the defendant to jail or release them ROR (release on recognizances). An arraignment is not a trial, and the defendant is entitled to a trial within a reasonable amount of time after the arraignment.
Bail is money paid that is held by the county or municipal court to make sure that the arrested does not flee the area before their trial. Bail amounts and other conditions are determined at the arraignment. Once the case is over, the bail money is returned to the defendant. If a person does not pay bail, they remain in jail until their trial.
Bail can be denied if the court feels that the arrested would be a danger to others if released. Sometimes the court decides that there is a good chance that the arrested will show up for trial and not flee so they are released on their own promise, or recognizance without having to pay bail.
A bond proceeding is the determination of how much bail is to be paid and usually happens at the same time as an arraignment. During bond proceedings, the defendant can have an attorney present but does not have the right to an attorney. Jailors, law enforcement and prosecutors generally do not have authority to set bail. A judge or court officer in Musselshell County or municipal court sets bail. Judges in Montana rely on a statewide bail schedule, which sets out a recommended range of bail amounts for different offenses. Judges can still exercise discretion in setting bail above or below the recommended range.
It is always important to have family involvement after being arrested. Not only can they make calls and communicate on your behalf (not all bond companies will accept collect calls), but family support will show the court that there are people who will make sure that the defendant makes it to court, not only for the defendant’s own good, but because they may have signed bond paperwork and responsible to pay if the defendant does not show in court. Chances of obtaining a bond from a bond company or clerk of court are better if family is involved.
(There have been phone scams to where a bond company calls and informs a person that their family member has been arrested and they ask for financial information. A bondsman will not call asking for money without involvement of the arrested.)
Montana permits five types of bonds:
• By a deposit with the court of an amount equal to the required bail of cash, stocks, bonds, certificates of deposit, or other personal property approved by the court.
• By pledging real estate situated within the state with an unencumbered equity, not exempt, owned by the defendant or sureties at a value double the amount of the required bail.
• By posting a written undertaking executed by the defendant and by two sufficient sureties.
• By posting a commercial surety bond executed by the defendant and by a qualified agent for and on behalf of the surety company.
• By posting an offender's driver's license in lieu of bail if the summons describes a violation of any offense as provided in 61-5-214 and if the offender is the holder of an unexpired driver's license.”
A criminal defense attorney (also called lawyer or counsel) is hired or retained to represent the arrested as early as possible after the arrest.
If there is a chance that the case might go to trial and the defendant cannot afford an attorney, the 6th Amendment of the U.S. Constitution requires that the court provide an attorney. This is called indigent representation and a public defender or assigned attorney would represent the defendant in all proceedings. Indigent representation is only available misdemeanor and felony cases that could result in jail time, juvenile cases and certain appeal cases.
The Montana Office of the State Public Defender manages the indigent cases. Most of Montana is served by contracted attorneys and there are full time public defenders for the more populated areas. There is a $250 fee for misdemeanor cases and an $800 fee for felony cases. That’s if the person decides to plead guilty. If instead they choose to go to trial, they “shall” pay the cost to the state for their public defender’s work throughout trial. Many times, the public defender will make a motion to the court to drop the fees.
For less serious cases or civil cases, there are pro bono volunteers who volunteer legal services for free or for a small fee. They often will hold clinics to teach people how to represent themselves in court or expunge their record which means to legally erase or eliminate a criminal or arrest record from public view. This website provides contact information for pro bono services in Montana.
Many courts will provide forms and help for people who want to represent themselves, called pro se. Here is a link for legal self-help centers.
A district court can refer to the first level of the legal system, or a minor court. District courts are located in the community. A district court can also refer to a U.S. Federal District Court that hears federal cases. There is one U.S. federal district court in Montana, with offices throughout the state. It is important that you check the address of the court you are to appear in rather than to ask someone because that person might give you directions to the wrong “district” court. Being late to court can land you in custody as well.
Pretrial proceeding is the process where both sides (prosecution and defense) gather information, interview witnesses, request records, videos etc. Pretrial proceedings also include communications with the judge assigned to the case and these appearances are either in person or by on-line conferencing. Some pretrial proceedings may not require a defendant’s appearance, allowing an attorney to appear in their place. The information that is gathered is called discovery and both sides must share the information that they have gathered. This information does not include conversations between the arrested and their attorney.
Most cases do not go to trial because both sides reach a plea deal, where both sides try to reach a reasonable punishment based on what was learned in the pretrial proceedings. A plea deal can only happen if the accused person admits they are guilty in exchange for a lighter punishment. The reason they must admit guilt is because it would not be fair to punish someone who claims they are not guilty. There are times in plea bargaining when the prosecution agrees to give a lighter sentence in exchange for information leading to the arrest of more serious criminal related to the crime.
Trial is where both sides share their information in front of a judge or a judge and jury. After listening to all the evidence, the judge or jury decides the verdict which is whether if the person is guilty or not guilty. If a court has only a judge hearing both sides, it is called a bench trial. If a jury is selected, it is called a jury trial. If the defendant is found non-guilty, they are released. If they are found to be guilty, the next step is sentencing.
Sentencing is the punishment that the judge decides the person should get. This could be jail or prison time, fines, community service, probation, or a combination.
Appeal is asking for a higher court to hear the case again at an appellate court. If the accused person thinks something went wrong at trial or has new information that was not available during the trial or that the sentence is too harsh, the defense attorney can ask for an appeal. It is not unusual for an appeal when there is a long jail sentence, but an appeal can be denied if the appellate court feels that the original trial or sentencing was fair.
In Montana, the law doesn’t lay out different classes or levels of misdemeanors. It simply lists the maximum possible sentencing penalty for each crime in the same section of code that defines the crime. In addition, it describes what constitutes criminal mischief and tells you the maximum possible fine and jail time for a conviction.
A felony crime is a more serious crime than a misdemeanor and are divided into different classes which are general guidelines and are based on the crime, prior criminal history and other factors. Examples of felony crimes are murder, rape, theft, aggravated assault, drug trafficking, kidnapping and identity theft. Just like misdemeanors, Montana doesn’t lay out different classes or levels of felonies. It simply lists the maximum possible sentencing penalty for each crime in the same section of code that defines the crime. In addition, it describes what constitutes criminal mischief and tells you the maximum possible fine and jail time for a conviction.
The Musselshell County Clerk of Court is an elected official whose responsibilities for Criminal Court’s administrative issues include receiving criminal warrants, receiving bail, creating the trial schedule, receiving fees, fines and maintaining court records.
A warrant is used to get someone to appear in court or to law enforcement. There must be good reason to believe that the person is involved in a crime. The warrant gives authority to arrest the person and search for evidence for the investigation of the crime.
A criminal summons is issued to request that a person appear in court at a particular time and date. It does not involve an arrest. A traffic ticket, summary citation or lesser misdemeanor could be considered a summons if you are given a court date.
A summary citation, commonly referred to as a ticket, is a criminal summons by a law enforcement officer either in person or via mail accusing the defendant of a minor offense, stating potential fine, listing the court having jurisdiction and instructions for addressing the issue. Defendants may or may not be required to appear in court or handle the matter by entering a plea via mail.
Fines are usually paid to the District Court or clerk of court and payment methods can be found on the District Court or Musselshell County County Clerk of Court website. If you do not pay your fine on time, you can lose your driver’s license, have to pay additional fees or even have a warrant for your arrest. It is important to read the instructions on the ticket issued by the police officer or court at the time of your arrest. For a parking ticket or summary citation, the fine amount and how to send payment should be on the ticket.
Montana Criminal Court System - How it Works
City courts and six Municipal courts handle violations of municipal ordinances (city laws), traffic violations, parking violations and criminal misdemeanor offenses that occur within the city or towns police jurisdiction.
Justice courts handle similar cases as municipal courts in regions that may not have municipal courts. These courts can issue search and arrest warrants for felony crimes.
Yellowstone County has both a municipal court and a justice court.
District courts will hear a misdemeanor only if it is contained within a larger case that also has felony counts. District courts process felony cases from beginning to end. They can hear appeals from the city, municipal and justice courts. Juvenile cases are heard in district court with a special court for Juvenile Justice.
Specialty courts or treatment courts are being adopted in many states as a way to handle cases that involve non-violent and first-time offender cases in a way to where the offender can retain a job or responsibilities while following specific orders of the court as returned court appearances, periodic evaluations or testing for substances. Find out more about Montana Specialty Courts.
There are no Courts of Appeals in Montana. Instead, the Montana Supreme Court can supervise cases from district courts.
The Montana Supreme Court is like our United States’ Supreme Court because it has a panel of judges that rule on matters that have to do with someone’s constitutional rights or policies and laws. The Montana State Supreme Court deals with the state constitution or laws or policies. Sometimes the Supreme Court will hear criminal cases on appeal when there is question on the state laws or procedures that lead to the appeal.
The criminal cases are usually referred from the district courts of appeal.
FEDERAL COURT
Federal Court deals with crimes involving violations of United States laws. Federal crimes include federal drug trafficking, federal tax evasion and fraud that crossed state lines and include crimes that occur on federal property as post offices or federal buildings.
Cases involving crimes that involve the FBI or DEA or Immigration agencies are federal crimes. Terrorism is a federal crime.
There are some differences in the Federal court system as compared to the Montana state court system. For example, the attorneys who work for the courts are called United States Attorneys and Federal judges are called District Court Judges (not to be confused by local state district courts).
Federal Magistrate Judges hear the case early on, but they do not decide on the cases at a trial like the Federal District Court Judges. In a federal case, a grand jury is used for indictments.
There is one U.S. Federal Judicial District in Montana.