However, in 1881 the Catholic population had grown to the point that the priest from Montpelier was traveling to Barre to conduct worship for 31 families, initially in the town hall.
The church was built to accommodate the growing number of Roman Catholic families, especially of Irish, Italian, and French descent, who were flocking to Barre to work in the granite industry.
In 1927, in response to a demand for faith-based education for local Roman Catholic children, the priest of St. Monica's founded a school adjacent to the church.
According to the University of Vermont, in 1905, the Roman Catholic Granite workers of Barre, many of whom were Italian immigrants, took the unusual step of importing marble from Carrara to complete their church altar.
"[5] Due to declining membership, Bishop Christopher J. Coyne has combined St. Monica with St. Sylvester's Parish in Graniteville and St. Cecelia & St. Frances Cabrini in East Barre.