Originally from South Dakota, Jon Tunheim earned his Bachelor Degree in Physics at South Dakota State University and soon moved to Washington to attend law school at the University of Puget Sound School of Law. While in law school, he joined the Thurston County Prosecuting Attorney's Office as a legal intern in 1988 and immediately appointed as a Deputy Prosecuting Attorney after being admitted to the practice of law. He served the office in that capacity until elected Prosecuting Attorney in 2010. During his career, Jon focused on cases involving sexual assault, domestic violence and crimes against children. Jon was a leader in the effort to create Monarch Children's Justice and Advocacy Center, an organization providing coordinated services to child victims of abuse and neglect.
Jon is an active member of Washington's legal community. He is a past president of the Washington Government Lawyers Bar Association and the Association of Thurston County Deputy Prosecuting Attorneys. He currently serves on the Washington State Sentencing Guidelines Commission, the Paralegal Advisory Board for South Puget Sound Community College, and is the current President of both the Washington Association of Prosecuting Attorneys (WAPA) and the Washington State Association of Drug Court Professionals (WSADCP).
A graduate of Leadership Thurston County Jon now serves on its Board of Regents and supports many other local charities. He is the current President of the Board of Directors for the United Way of Thurston County, and previously served on the boards of the Child Care Action Council, Big Brothers Big Sisters, and the Family Support Center of South Sound. He is an active member of the West Olympia Rotary Club.
For his community work, Jon was named a "21st Century Leader" by The Olympian, and a "Champion for Kids" by TOGETHER! He is a recipient of Thurston Community Network's "Making a Difference in the Life of a Child" award and later recognized as a "Local Hero" by the Washington State Bar Association. In 2012, Tunheim was named "Lawyer of the Year" by the Thurston County Bar Association and later named a "Champion for Washington's Kids" by the organization Fight Crime: Invest in Kids. In 2019, Jon was named "Elected Official of the Year" by the Foster Parents Association of Washington State. Jon and his wife Marcia, also an attorney, have been married 31 years and have 4 sons.