<SEC-DOCUMENT>0001047469-17-007109-index.html : 20171116
<SEC-HEADER>0001047469-17-007109.hdr.sgml : 20171116
<ACCEPTANCE-DATETIME>20171116115930
ACCESSION NUMBER:		0001047469-17-007109
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20171116
DATE AS OF CHANGE:		20171116

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:	333-205139-02
		FILM NUMBER:		171207294

	BUSINESS ADDRESS:	
		STREET 1:		6 EXECUTIVE DRIVE
		CITY:			COLLINSVILLE
		STATE:			IL
		ZIP:			62234
		BUSINESS PHONE:		618-343-8150

	MAIL ADDRESS:	
		STREET 1:		6 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>a2233847z424b3.htm
<DESCRIPTION>424B3
<TEXT>
Document 1 - file: a2233847z424b3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g861945.jpg
<DESCRIPTION>G861945.JPG
<TEXT>
Document 2 - file: g861945.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g481761.jpg
<DESCRIPTION>G481761.JPG
<TEXT>
Document 3 - file: g481761.jpg

</DOCUMENT>
</SEC-DOCUMENT>