<SEC-DOCUMENT>0000834798-16-000062-index.html : 20160226
<SEC-HEADER>0000834798-16-000062.hdr.sgml : 20160226
<ACCEPTANCE-DATETIME>20160226130253
ACCESSION NUMBER:		0000834798-16-000062
CONFORMED SUBMISSION TYPE:	NSAR-B
PUBLIC DOCUMENT COUNT:		6
CONFORMED PERIOD OF REPORT:	20151231
FILED AS OF DATE:		20160226
DATE AS OF CHANGE:		20160226
EFFECTIVENESS DATE:		20160226

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			T. Rowe Price Index Trust, Inc.
		CENTRAL INDEX KEY:			0000858581
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		NSAR-B
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-05986
		FILM NUMBER:		161460038

	BUSINESS ADDRESS:	
		STREET 1:		100 EAST PRATT STREET
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21202
		BUSINESS PHONE:		410-345-2000

	MAIL ADDRESS:	
		STREET 1:		100 EAST PRATT STREET
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21202

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PRICE T ROWE INDEX TRUST INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PRICE T ROWE INSTITUTIONAL EQUITY FUNDS INC
		DATE OF NAME CHANGE:	19900227
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000858581
<SERIES-ID>S000002089
<SERIES-NAME>T. Rowe Price Equity Index 500 Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000005457
<CLASS-CONTRACT-NAME>T. Rowe Price Equity Index 500 Fund
<CLASS-CONTRACT-TICKER-SYMBOL>PREIX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000159677
<CLASS-CONTRACT-NAME>T. Rowe Price Equity Index 500 Fund-I Class
<CLASS-CONTRACT-TICKER-SYMBOL>PRUIX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000858581
<SERIES-ID>S000002090
<SERIES-NAME>T. Rowe Price Extended Equity Market Index Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000005458
<CLASS-CONTRACT-NAME>T. Rowe Price Extended Equity Market Index Fund
<CLASS-CONTRACT-TICKER-SYMBOL>PEXMX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000858581
<SERIES-ID>S000002091
<SERIES-NAME>T. Rowe Price Total Equity Market Index Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000005459
<CLASS-CONTRACT-NAME>T. Rowe Price Total Equity Market Index Fund
<CLASS-CONTRACT-TICKER-SYMBOL>POMIX
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000858581
<SERIES-ID>S000051326
<SERIES-NAME>T. Rowe Price Mid-Cap Index Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000161835
<CLASS-CONTRACT-NAME>T. Rowe Price Mid-Cap Index Fund
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000161836
<CLASS-CONTRACT-NAME>T. Rowe Price Mid-Cap Index Fund-I Class
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000858581
<SERIES-ID>S000051327
<SERIES-NAME>T. Rowe Price Small-Cap Index Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000161837
<CLASS-CONTRACT-NAME>T. Rowe Price Small-Cap Index Fund
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000161838
<CLASS-CONTRACT-NAME>T. Rowe Price Small-Cap Index Fund-I Class
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>NSAR-B
<SEQUENCE>1
<FILENAME>ans_ifc.fil
<DESCRIPTION>ANSWER FILE~ INDEX TRUST
<TEXT>
Document 1 - file: ans_ifc.fil

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77B ACCT LTTR
<SEQUENCE>2
<FILENAME>indextrustinc123115.htm
<DESCRIPTION>ACCOUNT LETTER~ INDEX TRUST
<TEXT>
Document 2 - file: indextrustinc123115.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>indextrustinc123115x1x1.jpg
<DESCRIPTION>GRAPHIC~ INDEX TRUST
<TEXT>
Document 3 - file: indextrustinc123115x1x1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>indextrustinc123115x2x1.jpg
<DESCRIPTION>GRAPHIC~ INDEX TRUST
<TEXT>
Document 4 - file: indextrustinc123115x2x1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>indextrustinc123115x2x2.jpg
<DESCRIPTION>GRAPHIC~ INDEX TRUST
<TEXT>
Document 5 - file: indextrustinc123115x2x2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77I NEW SECUR
<SEQUENCE>6
<FILENAME>nca_ifc1.htm
<DESCRIPTION>NEW CLASS~ INDEX TRUST
<TEXT>
Document 6 - file: nca_ifc1.htm

</DOCUMENT>
</SEC-DOCUMENT>