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Phone & Fax Numbers 
 
Service:   Phone:


         

Call before you dig!   811
Hearing Impaired   711
Investor Services   800.255.2237
Economic Development   800.981.9409
    
    
    
   
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
                 
See additional Ameren Illinois contact information. See additional Ameren Missouri contact information.
               
               
Ameren, phone and fax numbers, customer service numbers, Ameren Investor Services phone number, Economic Development phone number
 
 
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