<SEC-DOCUMENT>0001104659-20-122797-index.html : 20201109
<SEC-HEADER>0001104659-20-122797.hdr.sgml : 20201109
<ACCEPTANCE-DATETIME>20201109085635
ACCESSION NUMBER:		0001104659-20-122797
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20201109
DATE AS OF CHANGE:		20201109

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Ameren Illinois Co
		CENTRAL INDEX KEY:			0000018654
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
		IRS NUMBER:				370211380
		STATE OF INCORPORATION:			IL
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-249475-02
		FILM NUMBER:		201296299

	BUSINESS ADDRESS:	
		STREET 1:		10 EXECUTIVE DRIVE
		CITY:			COLLINSVILLE
		STATE:			IL
		ZIP:			62234
		BUSINESS PHONE:		618-343-8150

	MAIL ADDRESS:	
		STREET 1:		10 EXECUTIVE DRIVE
		CITY:			COLLINSVILLE
		STATE:			IL
		ZIP:			62234

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CENTRAL ILLINOIS PUBLIC SERVICE CO
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B3
<SEQUENCE>1
<FILENAME>tm2035238-1_424b3.htm
<DESCRIPTION>424B3
<TEXT>
Document 1 - file: tm2035238-1_424b3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>lg_amerenillinois-4c.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: lg_amerenillinois-4c.jpg

</DOCUMENT>
</SEC-DOCUMENT>