The 11th Congressional district covers parts of Cook, Du Page, Kane, Kendall and Will counties. All or parts of Aurora, Bolingbrook, Burr Ridge, Channahon, Crest Hill, Darien, Downers Grove, Joliet, Lemont, Lisle, Montgomery, Naperville, New Lenox, North Aurora, Oswego, Plainfield, Rockdale, Romeoville, Shorewood, Willowbrook, Woodridge are included.