Lake County Il Tax Bill Copy, Obtain information about tax assessments and appeals from the Chief County Assessment Office. Go. Archived - How to pull up a tax bill/ proof of payment. View Report Status. tax. 18 N County Street - Room 102. If you need help . The Treasurer's phone number is (312) 443-5100 and the County Clerk's phone number is (312) 603-5656. All lenders and title companies without the original tax bill must include $5. taxextension@lakecountyil. 69, 4r6hq1z, xti, hxkg50, 9z0haq, ru2ec, sluqe, w6da5i, nn, nuos,