Classified according to religion, the various denominations were, in 1901, as follows: Presbyterians, 65,310; Episcopalians, 44,874; Methodists, 49,909; Roman Catholics, 35, 622; Baptists, 9098; Lutherans, 16,473; Mennonites, 15,222; Greek Catholics, 7898; other denominations, 9903; not specified, 638.
The English Independents and the modern Baptists, as well as the Mennonites, may be regarded as the historical continuation of lines of development going back to the Waldensians and the Bohemian Brethren, and passing down through the German, Dutch and Swiss Anabaptists.
Their system is based on literal obedience to the commands of the New Testament, and they have points of similarity both with the Mennonites and with the Dunkards.
Newton is the centre of the settlements of the German-Russian Mennonites, a thrifty people, who immigrated in 1873 and subsequently; Bethel College (opened 1893) is a Mennonite secondary school, and there is a Mennonite hospital.
There is a large number of the smaller religious sects in the state; the principal denominations, with the number of communicants of each in 1906, are: Metho dist (363,443), Lutheran (335,643), Presbyterian (322,542), Reformed Church (177,270), Baptist (141,694), Protestant Episcopalian (99,021), United Brethren (55,574), United Evan gelical Church (45,480), Disciples of Christ (26,458), German Baptist Brethren (23,176), Eastern Orthodox Churches (22,123), Mennonites (16,527), Congregational (14,811), Evangelical Association (13,294), Friends (12,457), Church of God or " Winnebrennerians " (11,157), and Moravian (5322).