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Phone And Mail

Residential

  Ameren Illinois
  Phone: 800.755.5000
  Fax: 800.851.1796
  Hours: 7:00 a.m. - 7:00 p.m. M-F

  Ameren Missouri
  Phone:800.552.7583
  Fax: 800.297.8054
  Hours: 7:00 a.m. - 7:00 p.m. M-F

 

Business

  Ameren Illinois
  Phone: 800.232.2477
  Fax: 877.263.7369
  Hours: 7:00 a.m. - 7:00 p.m. M-F

  Ameren Missouri
  Phone: 877.426.3736 
  Fax: 866.222.3471
  Hours: 7:00 a.m. - 5:30 p.m. M-F

 

Construction & Engineering

  Ameren Illinois
  Phone: 888.659.4540
  Fax: 217.424.6758
  Hours: 7:30 a.m. - 4:30 p.m. M-F

  Ameren Missouri
  Phone: 866.992.6619
  Fax: 314.641.2406
  Hours: 7:00 a.m. - 5:30 p.m. M-F
 

Property Management

  Ameren Illinois
  Phone: 800.487.5795
  Fax: 800.851.1796 
  Hours: 8:00 a.m. - 5:00 p.m. M-F  

  

Website Support

  Ameren Illinois
  Phone: 877.263.7361  
  Fax: 800.851.1796  
  Hours: 7:00 a.m. - 7:00 p.m. M-F  

  Ameren Missouri
  Phone: 877.263.7361  
  Hours: 7:00 a.m. - 7:00 p.m. M-F

 

Other Services

  JULIE/Call before you dig! Phone: 811  
  Hearing Impaired Phone: 711

Payment

  Ameren Illinois
  PO Box 88034
  Chicago, IL 60680-1034

  Ameren Missouri
  PO Box 88068
  Chicago, IL 60680-1068

 

Correspondence

  Ameren Illinois
  300 Liberty St.
  Peoria, IL 61602

  Ameren Missouri
  PO Box 790352
  St. Louis, MO 63179-0352