The URCNA does not have a central office or headquarters but has a stated clerk who is responsible for Federation correspondence.
If you have a question about the federation or the directory of the churches, you can contact him at:
Rev. Bradd L. Nymeyer
Sioux Center, IA
Additional information regarding URCNA functionaries may be found here
Copyright (c) 1998-2013 by the Grace United Reformed Church (Waupun, WI) on behalf of the URCNA