Call
Illinois - 800.755.5000
Missouri - 800.552.7583
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