Middlesex Sheriff

Official account of the Middlesex (MA) Sheriff's Office. This account is not monitored 24/7. Please call 911 in an emergency.

[Middlesex Sheriff @msosheriff]

On this Veterans Day - and every day - we thank all those who have served our nation with pride. We are forever grateful for their courage and sacrifice. #VeteransDay

[Middlesex Sheriff @msosheriff]

Happy 251st birthday to the United States Marine Corps! #SemperFi #SemperFidelis

[Middlesex Sheriff @msosheriff]

Wishing a safe and happy Halloween to all those celebrating this evening!

[Middlesex Sheriff @msosheriff]

Are you ready to start a career in corrections? Take the first step this Friday, October 30 at 9:30 a.m. at our Training Academy in Chelmsford. No registration is required, just bring your driver’s license and a pencil. We hope to see you there!

[Middlesex Sheriff @msosheriff]

The weather was perfect for this year’s Shriners Trunk or Treat & Touch A Truck. Thank you to all the families who stopped by to say hello on Sunday!

[Middlesex Sheriff @msosheriff]

Members of the 55th Basic Training Academy recently completed a week of training on the range. #55thBTA

[Middlesex Sheriff @msosheriff]

Ready for a career in corrections? Take the first step this Saturday, October 17 at 8:30 a.m. at our Training Academy in Chelmsford.  No registration is required, just your driver’s license and a pencil.  We hope to see you there.

[Middlesex Sheriff @msosheriff]

Wishing the U.S. Navy a happy 251st birthday! To all those sailors - past and present - who have defended our nation during times of peace and times of conflict, we are forever grateful for your service, your sacrifice and your leadership!

[Middlesex Sheriff @msosheriff]

Glad to join the Townsend Police Department for National Night Out Tuesday evening. We had a great time meeting area residents and showing off our antique wagon. #WeAreTheMSO

[Middlesex Sheriff @msosheriff]

Mark your calendar for three upcoming opportunities to take our CO Entrance Exam! Just bring yourself, your driver's license, and a pencil to our Training Academy in Chelmsford. No registration is required.

[Middlesex Sheriff @msosheriff]

September is #RecoveryMonth. At the Middlesex Sheriff's Office, we strive every day to support those on their path to recovery and their families through our Medication Assisted Treatment program, Families in Treatment program and other important initiatives. #RecoveryisPossible

[Middlesex Sheriff @msosheriff]

We had a great time in Woburn on Thursday speaking to job seekers who were curious about our mission at the Middlesex Sheriff's Office. Start your career with the MSO: https://t.co/kGEKfBoTV2.

[Middlesex Sheriff @msosheriff]

This #ITProfessionalsDay, we’re recognizing our incredible IT team! From troubleshooting unexpected issues to keeping our systems secure and supporting staff, their work behind the scenes keeps the Middlesex Sheriff’s Office running smoothly. Thanks for all you do!

[Middlesex Sheriff @msosheriff]

As we mark Recovery Month, members of the MSO were proud to join the Bridge Recovery Center in Malden for a powerful reentry roundtable and recovery event last week.

[Middlesex Sheriff @msosheriff]

Reminder: This Saturday - September 12 - at 8:30 a.m. we're offering a Correction Officer Entrance Exam at our Training Academy in Chelmsford. No advance registration is required, but you must bring a driver's license. See you then! #WeAreTheMSO

[Middlesex Sheriff @msosheriff]

As we mark this solemn 25th anniversary of 9/11, may we never forget the victims and their families. And may we forever remember the tremendous acts of heroism by first responders and civilians, and the displays of compassion shown by friends and neighbors across the nation.

[Middlesex Sheriff @msosheriff]

It's time to begin your career at the Middlesex Sheriff's Office! This Saturday, September 12, at 8:30 a.m. we're offering a Correction Officer Entrance Exam at our Training Academy in Chelmsford. No advance registration is required, but you must bring a driver's license.

[Middlesex Sheriff @msosheriff]

On this Labor Day, we thank the hardworking individuals at the MSO and beyond who keep our communities moving forward every day. #LaborDay

[Middlesex Sheriff @msosheriff]

#55thBTA recruits just finished up week 2 of academy training. This week, they heard from Sheriff Koutoujian, Special Sheriff Cefalo, and Superintendent Mahoney about their expectations for these future officers, career opportunities, & advice for maximizing their training.

[Middlesex Sheriff @msosheriff]

Thank you to all those who made the 2026 Youth Public Safety Academy an overwhelming success. To all those heading back to school, we wish you a great academic year and can't wait to see everyone again in 2027! #YPSA26