Thornhill Baptist Church serves its congregation and the broader Thornhill community through worship services, spiritual education, and community outreach programs. The church offers weekly gatherings focused on Christian teaching and practice, along with Bible study groups, prayer meetings, and youth ministries for members of all ages. Beyond its congregation, the church operates charitable initiatives including food assistance, support for families in crisis, and volunteer opportunities in the GTA. The church also hosts community events and provides meeting space for local groups, contributing to the social fabric of the area.