Joe McMahon

Joe McMahon has been the Kane County State's Attorney since 2010.


As state's attorney, he oversees an office of 130 employees, including 60 attorneys. In 2012 Joe was named the Illinois director of the National District Attorney's Association, and in 2013 he was elected to the Board of Governors of the Illinois Office of the State's Attorney's Appellate Prosecutor.


Joe began his legal career in 1992 as an Assistant State's Attorney in Kane County prosecuting criminal cases, including traffic, misdemeanor, felonies, sexual assault, gang-related crimes, crimes against children and the elderly, and first-degree murder and death-penalty cases. From 1998 to 2000 Joe served as chief of the Criminal Division of the Kane County State's Attorney's Office and supervised a staff of 28 lawyers and all criminal prosecutions in Kane County. Joe also worked as an Assistant Attorney General for the state of Illinois prosecuting white collar crime, public corruption and healthcare fraud.


Before he returned to the office in 2010, Joe was in the private practice of law, representing small and mid-sized organizations and their principals as their outside general counsel.


Joe is a member of the Illinois State Bar Association, having previously served as chairman of its Corporate Law Department Section Council, chairman of the Sentencing & Corrections Committee and currently is a member of its Judicial Evaluation Outside of Cook County Committee.


Joe earned his bachelor's degree in 1988 from the University of Iowa and his juris doctor from the John Marshall Law School in 1992. In 2006 Joe earned his Master's in Business Administration from the University of Notre Dame.