Meet your Commissioners

The Commission is made up of war-era Veterans who reside in Woodbury County. The Commission determines the operating procedures of the office and meets on a monthly basis. Day-to-day operation and administration of policy is handled by office staff. Budget concerns are decided by the Board of Supervisors.

New Commissioners Picture


Leon Koster

Koster resizedLeon Koster (Vietnam Veteran) is a life-long Siouxlander who graduated from Northwestern College and University of South Dakota. Mr. Koster taught school and was a principal in Sioux City for 32 years, as well as teaching at WITCC. He serves on several boards, including Women Aware and The Friends of Sioux City Police Department. He is married and has two children and one grandchild. 



Katherine Moreno

KMcropKatherine Moreno was born and raised in Siouxland. She served in the Marine Corps from 1990-2006, to include service at Meridian, El Toro, Omaha, Okinawa (training) and 29 Palms. Ms. Moreno served as a Chaplain's Assistant and in Administration. She has been employed with Siouxland District Health for 15 years, as a Hygienist. She is the Sr. Vice Commandant for the State of Iowa in the Marine Corps League (Siouxland Detachment 507), Devil Dogs [Dog Robber (Treasurer) and Mad Dog (member initiation)], as well as Commandant for the State of Iowa. She generously serves other community organizations, both related and not-related to her career. Ms. Moreno and her husband serve as CASAs (Court Appointed Special Advocates) for abused and neglected children in Woodbury County. In her free time, she enjoys camping, boating, skiing, bowling and spending time with her family.



Lincoln Ryan

Ryan B ResizedLincoln Ryan served on active duty from 1998 to 2006 and reserve from 2009 to present, in the U.S. Navy Seabee's as a builder. He has deployed to many locations, to include Iraq and Afghanistan. Mr. Ryan works for the City of Sioux City as a Maintenance Manager. He has a Bachelor's degree in Project Management. Lincoln and his wife Jessica have three children.



John Mansfield

JMcropCol. John L. Mansfield USA (Ret.)
Born and raised in Sioux City, John is a Vietnam veteran who served as an officer in the Army, Army National Guard and Army Reserve for over 30 years, retiring as a Colonel in 1996.  He also retired from the IRS in 2013 after a career of over 42 years as a Leadership Instructor and Manager.  He has a Business Administration Degree from Westmar College (Iowa) and a Masters Degree in Public Administration from Shippensburg University (Pennsylvania).  He also has published two articles on Leadership and Moral Courage, a short poem and a book about his Vietnam experiences titled Twenty Days in May; Vietnam 1968 which was published in 2008.  In his spare time he stays busy working as a volunteer for the NAIA tournaments, his church, and the Knights of Columbus as well as driving the DAV van to the Sioux Falls VA Medical Center.  He and his wife Sandy, a retired Clinical Nurse Manager, have been married for over 47 years.  They have two children and five grandchildren.



Emily Clayton


Emily Clayton is a United States Air Force veteran who was born and raised in the Siouxland area. She graduated from Briar Cliff University with a BSN in 2003. Mrs. Clayton has also been on a volunteer fire and rescue department for over 20 years and is a training officer for local EMTs. She is married with two sons.