Discover one of Montana's best kept secrets in Musselshell County, with Roundup as the County Seat.

Sheriff’s Office

Sheriff of Musselshell County

Musselshell County Montana DES Facebook Feed IconPhone: 406-323-1402
Fax: 406-323-2566
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820 Main Street
Roundup, MT 59072

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Sheriff: Michael Thomas

The Musselshell County Sheriff’s Office is the primary law enforcement office for Musselshell County.  The City of Roundup and Melstone contracts with the Musselshell County Sheriff’s Office for law enforcement services within their city limits. The Sheriff is the chief law enforcement officer in the county and is responsible for enforcing state and county laws, including city ordinances.

The Musselshell County Sheriff is also the county coroner and has four deputy coroners who work in his office and investigate all unattended deaths or deaths that could be criminally caused.

The Sheriff’s Office is responsible for tracking and recording sexual and violent offenders, serving civil process, issuing concealed weapons permits, record keeping, investigating criminal acts, maintaining the detention center, and patrolling the 1,900 square miles of Musselshell County.

The Sheriff’s Office is currently staffed by the Sheriff, Undersheriff, Sergeant, four deputies, an administrative assistant, and one detention officer.

Mission Statement

“With courage, honor, and integrity we protect the rights of all citizens. We strive to preserve the peace and provide for a safe enviornment for all through equal, fair, and consistent enforcement of state and local laws while upholding the constitution of the State of Montana and the United States of America. We hold ourselves to the highest standards of ethical conduct and professionalism; striving to be role models to the citizens we serve.”

Call Statistics

Hours of Operation

  • Sheriff’s Office: 24/7
  • EMERGENCY: 9-1-1

Detention Center Visiting

  • Tuesday: 9:00 a.m. -11:00 a.m.
  • Thursday: 3:00 p.m. – 5:00 p.m.
  • Sunday: 1:30 p.m. – 2:30 p.m.

Fingerprinting and Civil Division

  • Monday-Friday 9:00 a.m. – 5:00 p.m.
  • Concealed Weapon Permit
  • Monday-Friday 9:00 a.m. – 5:00 p.m. or by appointment

Sexual and Violent Offender Registration

  • Monday-Friday 9:00 a.m. – 6:00 p.m. Emergency 24/7
  • 24/7 Sobriety Program
  • 9:00 a.m. and 7:00 p.m. daily



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