Serving several eastern Massachusetts communities, St. Paul welcomes all parishioners "regardless of race, nationality, ethnicity, gender, sexual orientation, family configuration, economic circumstances or differences in ability, culture, education or age."
Services with Holy Communion, led by Rev. Ross Goodman, are held at 8am and 10:15am. An "Education Hour" is held at 9am with programs for children and an "Adult Forum" for teenagers and adults. A nursery is available for babies through 3-year-olds.
The church also maintains a small library and runs a young adults group that meets once a month after Sunday services. The church's youth group, called St. Paul's Youth or S.P.Y., takes part in monthly activities raging from volunteer projects to just plain fun. The Sunday school program includes a curriculum focused on Godly play. The building also houses The Cambridge Korean Presbyterian Church.