Dan Kotowski (born March 24, 1967) is the Illinois State Senator from the 28th district. The 28th district includes all or parts of Arlington Heights, Bartlett, Bloomingdale, Des Plaines, Elk Grove Village, Hanover Park, Hoffman Estates, Park Ridge, Roselle and Schaumburg. He previously represented the 33rd district from 2007-2013 before the 2011 redistricting.On September 15th, Kotowski announced his resignation from the Illinois Senate to take a non-profit management position.