Today, I went to the local USCIS office at 10 w jackson blvd, and got the IEAD. This office is just outside the Jackson Blue Line Subway station. They opened the doors at 6AM. When they opened the doors, there were around 50 people in the line.
They were asking for EAD, 140 reciepts, IL driving license/state ID or some postal mail to prove that you are IL resident.
Got the IEAD for 3 months. Out by 9AM.