Simply bring the money order and a valid form of ID to one of our locations in the Chicago suburbs. Top 10 Best Cash Money Order Near Chicago, Illinois ; 1.Go to any Post Office location. Take cash, a debit card, or a traveler's check. Fill in the recipient and your address; for bills, include an account number; sign it; keep proof of payment. 1. Money orders may only be purchased with cash. 2. Bill pay fees vary based on the type of bill being paid. Money orders provide the convenience of cash without the need of a bank account. Money orders are a safe alternative to cash or checks. Find out how much they cost, when you need one, where to buy it and how to cash it.