Contact Us

Middlesex County Retirement System
25 Linnell Circle
P.O. Box 160
Billerica, MA 01865
Hours of Operation: 8:30am – 5:00pm Monday-Friday

Phone: (978) 439-3000 or (800) 258-3805

Email: mrs@middlesexretirement.org

Staff Directory: Board and Staff Members

Member Unit Listing: Member Unit Listing