In 1711, German immigrants began to arrive in great numbers in America. Many of these original settlers were Protestants who held firmly to the Calvinistic doctrines of the Reformation. These “Reformed” Christians eventually founded the German Reformed Church (later known as the Reformed Church in the United States or RCUS), which became one of the largest denominations in America. In the 1930s theological liberalism led to division in the church, with the majority uniting with a more liberal denomination. Today the RCUS is composed of that smaller group of churches who have remained faithful to the doctrines of the Reformation.
Covenant Reformed Church of Sacramento is a member of the Western Classis of the RCUS, and celebrated its 50th anniversary in 2021.
The RCUS is a member of the North American Presbyterian and Reformed Council (NAPARC).