text: never received income tax check from 7 or 8 years ago, how do i find it? illinois? how do i collect my illinois state tax return from seven or eight years ago? i moved to a different address and i never received it. can i still collect it? i'm assuming you filed the tax return and were expecting a refund.  the illinois state treasurers office has an unclaimed property division where the monies would have went to.  you can search it online at: http://www.cashdash.net/    yes, that is the illinois unclaimed property website but if you don't feel comfortable taking my word for it, you can visit the illinois state web pages and look for the treasurers office and their unclaimed property division which will then direct you to http://www.cashdash.net/