St. Mark's Presbyterian Church in Mississauga offers weekly worship services, Bible study groups, and spiritual counseling to members of the local community. The congregation gathers for Sunday services featuring traditional hymns and contemporary music, while weekday programs provide opportunities for deeper learning and faith development. The church maintains active outreach initiatives including community dinners, support for those experiencing homelessness, and partnerships with other faith organizations across the Greater Toronto Area. St. Mark's also hosts youth programs and pastoral care for congregants during times of crisis or transition. The church welcomes people of all backgrounds to participate in its worship and community activities.