|The first SVdP chapter in the United States was established in 1845 in St. Louis, Mo. Membership in the United States totals some 172,000 in 4,600 communities. The national headquarters is in St. Louis. Members of the Society are known as “Vincentians,” after St. Vincent de Paul, the patron of the organization. Vincentians are organized into “Conferences,” a group of volunteers who gather together to grow spiritually and offer person-to-person service to those in need or living in poverty.