Save energy with basic, daily decisions.
 
Mailing Addresses for Ameren Illinois 
 
Please include your bill stub with your check or money order. If you do not have your bill stub, write your 10-digit account number or service address on your payment to ensure your account is credited.
      
Mail all payments to the address on your bill or:
Ameren Illinois
PO Box 88034
Chicago, IL 60680-1034
  
Allow at least five days for your payment to reach us.
    
    
Send correspondence to:
Ameren Illinois
300 Liberty St.
Peoria, IL 61602
      
      
Save a Stamp!
Sign up for eBill, our safe, convenient and fast electronic billing option. With eBill you'll receive your Ameren Illinois bill in an email and use the notification to pay your bill online as well.
    
    
If you have comments or suggestions relating to this website, contact the Ameren.com Webmaster.
Ameren Illinois payments, make payment, mail in payment, mailing address, mailing addresses
 
 
Follow Us