<SEC-DOCUMENT>0001177017-19-000077-index.html : 20190514
<SEC-HEADER>0001177017-19-000077.hdr.sgml : 20190514
<ACCEPTANCE-DATETIME>20190514080408
ACCESSION NUMBER:		0001177017-19-000077
CONFORMED SUBMISSION TYPE:	485BPOS
PUBLIC DOCUMENT COUNT:		30
FILED AS OF DATE:		20190514
DATE AS OF CHANGE:		20190514
EFFECTIVENESS DATE:		20190514

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:		485BPOS
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	033-32859
		FILM NUMBER:		19820495

	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

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:		485BPOS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-05986
		FILM NUMBER:		19820496

	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>485BPOS
<SEQUENCE>1
<FILENAME>ifcxbrl-51201116.htm
<TEXT>
Document 1 - file: ifcxbrl-51201116.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.INS <SEQUENCE>2 <FILENAME>trpiti-20190429.xml <DESCRIPTION>XBRL INSTANCE FILE <TEXT> Document 2 - file: trpiti-20190429.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.SCH <SEQUENCE>3 <FILENAME>trpiti-20190429.xsd <DESCRIPTION>XBRL SCHEMA FILE <TEXT> Document 3 - file: trpiti-20190429.xsd
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.CAL <SEQUENCE>4 <FILENAME>trpiti-20190429_cal.xml <DESCRIPTION>XBRL CALCULATION FILE <TEXT> Document 4 - file: trpiti-20190429_cal.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.DEF <SEQUENCE>5 <FILENAME>trpiti-20190429_def.xml <DESCRIPTION>XBRL DEFINITION FILE <TEXT> Document 5 - file: trpiti-20190429_def.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.LAB <SEQUENCE>6 <FILENAME>trpiti-20190429_lab.xml <DESCRIPTION>XBRL LABEL FILE <TEXT> Document 6 - file: trpiti-20190429_lab.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.PRE <SEQUENCE>7 <FILENAME>trpiti-20190429_pre.xml <DESCRIPTION>XBRL PRESENTATION FILE <TEXT> Document 7 - file: trpiti-20190429_pre.xml
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>img_6bea5b5df3024.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 8 - file: img_6bea5b5df3024.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>img_d990c83f42d54.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 9 - file: img_d990c83f42d54.jpg
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>10 <FILENAME>R1.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 10 - file: R1.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>BarChart1.png <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 11 - file: BarChart1.png
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>12 <FILENAME>R2.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 12 - file: R2.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>13 <FILENAME>R8.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 13 - file: R8.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>14 <FILENAME>BarChart2.png <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 14 - file: BarChart2.png
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>15 <FILENAME>R9.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 15 - file: R9.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>16 <FILENAME>R15.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 16 - file: R15.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>17 <FILENAME>BarChart3.png <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 17 - file: BarChart3.png
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>18 <FILENAME>R16.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 18 - file: R16.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>19 <FILENAME>R21.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 19 - file: R21.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>20 <FILENAME>BarChart4.png <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 20 - file: BarChart4.png
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>21 <FILENAME>R22.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 21 - file: R22.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>22 <FILENAME>R27.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 22 - file: R27.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>23 <FILENAME>BarChart5.png <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 23 - file: BarChart5.png
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>24 <FILENAME>R28.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 24 - file: R28.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>25 <FILENAME>R34.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 25 - file: R34.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>26 <FILENAME>R35.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 26 - file: R35.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>27 <FILENAME>Show.js <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 27 - file: Show.js
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>28 <FILENAME>report.css <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 28 - file: report.css
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>29 <FILENAME>FilingSummary.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 29 - file: FilingSummary.html
Document 29 - RAW XML: FilingSummary.xml
</DOCUMENT> <DOCUMENT> <TYPE>ZIP <SEQUENCE>31 <FILENAME>0001177017-19-000077-xbrl.zip <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 31 - file: 0001177017-19-000077-xbrl.zip
</DOCUMENT> </SEC-DOCUMENT>