• Senior Choir is open to older teens and adults and leads congregational singing at the 10:00 AM service from September to June. Occasional singers are also welcome to join for special occasions or for a liturgical season such as Advent/Christmas or Lent/Easter.
• Bell Choir meets Sundays at 11:30 AM from October to May, ringing three octaves of both Hand Bells and Hand Chimes and enriching worship 6-8 times a year.
• Book Club meets every six weeks for a potluck dinner and lively discussion on a pre-chosen book.
• Men's Breakfast men of St. Mark's come together for food and fellowship on the 1st Saturday of each month for Breakfast at 8:00 AM
• The New Trading Post is a consignment shop and ministry of St. Mark's located at 6 Central St. Foxboro. The NTP offers gently used clothing at remarkably low prices for all in our community and especially those who are in need.
• Foxboro Food Pantry collects canned goods, dry goods, and toiletries to assist those in need in our community. Items are gathered at all times and presented as an offering by the children on the first Sunday of each month.
• One Family Project works together with other Episcopal parishes in our deanery, we currently support the One Family Project housed at All Saints Episcopal Church, Attleboro. 
• Pastoral Care Team provides visits, occasional transportation and meals as well as make sure those homebound stay connected with the church community.