Our Parish Office is located on the campus of St. Mark's at 1 South Road, Londonderry, NH. You are welcome to stop in at any time to make an appointment, request a mass card, or if you need any information. You may also stop by the 'Welcome Center' to do the same things before or after every weekend mass in the Church.

The Parish Office is open from 9:30 AM to 4 PM Monday through Thursday.

Office Phone: 603-432-8711
Email: info@stmarksnh.org