The German Congregational Church was founded in Milliken in 1918 by Volga German families that had settled in the area.
The German Congregational Church in Milliken was served by the following pastors:
Rev. F. Schlitzkus (1919-1920)
Rev. W. Woller (1920-1922)
Rev. H. Treise (1926-1929)
Rev. A. Rux (1930-1932)
Rev. John Henry Eckhardt (1932-?)
Rev. Theodore H. Pfenning (1940-1943)
- Eisenach, George John. A History of the German Congregational Churches in the United States (Yankton, SD: Pioneer Press, 1938): 247.
- Obituary of Rev. Theodore H. Pfenning (FindAGrave)
Mills, Mary Troudt (1993). Records of German Congregational Church, Milliken, Colorado, 1918-1976. Denver, Colo: American Historical Society of Germans from Russia, Denver Metro Chapter.