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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 RAjAGgpuvhjDlTPei9ruBhYKD48/paA2sDb3X6+riq1QJ1LmoBvLJqaDX3pVZ/To
 20PlNtuAor37WBy7/t9Ozw==

<SEC-DOCUMENT>9999999995-10-003537.txt : 20101214
<SEC-HEADER>9999999995-10-003537.hdr.sgml : 20101214
<ACCEPTANCE-DATETIME>20101214001523
ACCESSION NUMBER:		9999999995-10-003537
CONFORMED SUBMISSION TYPE:	EFFECT
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20101213
DATE AS OF CHANGE:		20101214
EFFECTIVENESS DATE:		20101213

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			VANGUARD INDEX FUNDS
		CENTRAL INDEX KEY:			0000036405
		IRS NUMBER:				231999755
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	002-56846
		FILM NUMBER:		101249327

	BUSINESS ADDRESS:	
		STREET 1:		PO BOX 2600
		STREET 2:		V26
		CITY:			VALLEY FORGE
		STATE:			PA
		ZIP:			19482
		BUSINESS PHONE:		6106696295

	MAIL ADDRESS:	
		STREET 1:		PO BOX 2600
		STREET 2:		V26
		CITY:			VALLEY FORGE
		STATE:			PA
		ZIP:			19482

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	VANGUARD INDEX FUNDS/
		DATE OF NAME CHANGE:	20011121

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	VANGUARD INDEX TRUST
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIRST INDEX INVESTMENT TRUST
		DATE OF NAME CHANGE:	19800904
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<OWNER-CIK>0000036405
<SERIES-ID>S000002841
<SERIES-NAME>Vanguard Extended Market Index Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000007781
<CLASS-CONTRACT-NAME>Institutional Shares
<CLASS-CONTRACT-TICKER-SYMBOL>VIEIX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000096110
<CLASS-CONTRACT-NAME>Institutional Plus Shares
<CLASS-CONTRACT-TICKER-SYMBOL>VEMPX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000036405
<SERIES-ID>S000002844
<SERIES-NAME>Vanguard Mid-Cap Index Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000007793
<CLASS-CONTRACT-NAME>Institutional Shares
<CLASS-CONTRACT-TICKER-SYMBOL>VMCIX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000096111
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<SERIES>
<OWNER-CIK>0000036405
<SERIES-ID>S000002845
<SERIES-NAME>Vanguard Small-Cap Index Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000007797
<CLASS-CONTRACT-NAME>Institutional Shares
<CLASS-CONTRACT-TICKER-SYMBOL>VSCIX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000096112
<CLASS-CONTRACT-NAME>Institutional Plus Shares
<CLASS-CONTRACT-TICKER-SYMBOL>VSCPX
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<SERIES>
<OWNER-CIK>0000036405
<SERIES-ID>S000002846
<SERIES-NAME>Vanguard Small-Cap Growth Index Fund
<CLASS-CONTRACT>
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<CLASS-CONTRACT-TICKER-SYMBOL>VSGIX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000036405
<SERIES-ID>S000002847
<SERIES-NAME>Vanguard Small-Cap Value Index Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000007803
<CLASS-CONTRACT-NAME>Institutional Shares
<CLASS-CONTRACT-TICKER-SYMBOL>VSIIX
</CLASS-CONTRACT>
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<DOCUMENT>
<TYPE>EFFECT
<SEQUENCE>1
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