Why was there no address to send Illinois Tax return? I then had to e-file and pay .

[KurtL1]

When you printed off the Illinois state tax return that you elected to mail, a cover sheet should have printed off with the address to mail the return. 

If you are sending your return without a payment, mail your return to:

ILLINOIS DEPARTMENT OF REVENUE
SPRINGFIELD IL 62719-0001

If you are sending a payment with your return, mail your return to:

ILLINOIS DEPARTMENT OF REVENUE
SPRINGFIELD IL 62726-0001