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Contact us by email, phone, fax or mail.
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Call us immediately to report a gas odor.
     
Do NOT contact us by email. Call us - see phone numbers on right.
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Phone Numbers
Call Ameren Illinois at 800.755.5000.
Call Ameren Missouri at 800.552.7583.
More information in Outage Center.
Phone & Fax Numbers
     
Call us immediately to report a gas odor.
     
Do NOT contact us by email. Call us - see phone numbers on right.
  donwed lines? gas odor? call us
     
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Ameren Illinois Customer Service: Ameren Missouri Customer Service:
Residential Customers Phone: 800.755.5000 Residential Customers Phone: 800.552.7583
  7:00 a.m. - 7:00 p.m./M-F Fax: 800.851.1796   7:00 a.m. - 7:00 p.m./M-F Fax: 866.297.8054
                 
Business Customers Phone: 800.232.2477 Business Customers Phone: 800.552.7583
  7:00 a.m. - 7:00 p.m./M-F Fax: 877.263.7369   7:00 a.m. - 5:30 p.m./M-F Fax: 866.222.3471
                  
Investor Services Other Services

800.255.2237
      Call before you dig!  811   
       
Hearing Impaired  711   
 
     
Mailing Addresses for your Ameren Payment
   
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. Allow at least five days for the payment to reach us.
    
         
Ameren Illinois Mailing Addresses   Ameren Missouri Mailing Addresses
     
Send all payments to:
  Send all payments to:
  Ameren Illinois     Ameren Missouri
  PO Box 88034     PO Box 88068
  Chicago, IL 60680-1034     Chicago, IL 60680-1068
         
Send all correspondence to:
  Send all correspondence to:
  Ameren Illinois     Ameren Missouri
  300 Liberty St.     PO Box 790352
  Peoria, IL 61602     St. Louis, MO 63179-0352
         
           
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