The United Church of Christ was founded in 1957 as a union of the evangelical and reformed branches of the protestant church and now comprises 6,100 churches and 1.4 million members—including President Barack Obama. The Somerville UCC states that members "believe many different things about God, and about the person of Jesus Christ. Many of us hail from other traditions…We find common ground in our yearning to build beloved community."

The church is noncreedal, stating "there is nothing you have to believe in order to belong," and also has a strong commitment to diversity. Rev. Molly Baskette is pastor and Ian Holland is support pastor, but nonordained persons also lead prayers and sometimes preach as part of the church's commitment to share everyone's religious experience.

Music is a key part of services. In addition to adult and children's choirs, members also play in the Strings of Glory bluegrass band, the First Church Marching Band, the Project SOUL funk band, and occasional brass or classical ensembles. A coffee hour and potluck follows Sunday services. Nursery and Sunday school are offered, as are Night Outs, where parents drop off kids for evening activities at the church so they can have a free evening.

Events and volunteer activities are strongly focused on social justice issues. The church participates in and supports a number of efforts to help feed the homeless and others in need.