Our Mission
We, the Bishop and ministers of the Roman Catholic Church of
the Diocese of Sioux City, declare our mission to nurture the
Body of Christ through our Baptismal call to proclaim, celebrate,
serve and teach the Gospel of Jesus Christ.
In response to COVID-19, the Central Catholic Offices are open by appointment only until further notice. If you need to contact someone at the Chancery, please call 712-255-7933 or visit our staff directory
Thank you for your understanding.
Bishop R. Walker Nickless was named the 7th Bishop in the 108-year history of the Diocese of Sioux City on November 10, 2005.
Bishop Nickless was ordained a priest for the Archdiocese of Denver on August 4, 1973. Before his appointment as Bishop, then Monsignor Nickless served as pastor of Our Lady of Fatima parish in Lakewood, Colorado and as Vicar General of the Archdiocese.