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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0001020569-04-000064.txt : 20041215
<SEC-HEADER>0001020569-04-000064.hdr.sgml : 20041215
<ACCEPTANCE-DATETIME>20041215122637
ACCESSION NUMBER:		0001020569-04-000064
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20041213
FILED AS OF DATE:		20041215
DATE AS OF CHANGE:		20041215

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GOLISANO B THOMAS
		CENTRAL INDEX KEY:			0000903201

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13045
		FILM NUMBER:		041203908

	BUSINESS ADDRESS:	
		STREET 1:		911 PANORAMA TRAIL SOUTH
		CITY:			ROCHESTER
		STATE:			NY
		ZIP:			14625-0397
		BUSINESS PHONE:		7163856666

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			IRON MOUNTAIN INC/PA
		CENTRAL INDEX KEY:			0001020569
		STANDARD INDUSTRIAL CLASSIFICATION:	PUBLIC WAREHOUSING & STORAGE [4220]
		IRS NUMBER:				232588479
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		745 ATLANTIC AVENUE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02111
		BUSINESS PHONE:		6175354766

	MAIL ADDRESS:	
		STREET 1:		745 ATLANTIC AVENUE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02111

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PIERCE LEAHY CORP
		DATE OF NAME CHANGE:	19960807
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
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    <schemaVersion>X0202</schemaVersion>

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    <periodOfReport>2004-12-13</periodOfReport>

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        <issuerName>IRON MOUNTAIN INC/PA</issuerName>
        <issuerTradingSymbol>IRM</issuerTradingSymbol>
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            <rptOwnerName>GOLISANO B THOMAS</rptOwnerName>
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        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PAYCHEX INC.</rptOwnerStreet1>
            <rptOwnerStreet2>911 PANORAMA TRAIL SOUTH</rptOwnerStreet2>
            <rptOwnerCity>ROCHESTER</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>14625</rptOwnerZipCode>
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                <transactionFormType>4</transactionFormType>
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                <transactionPricePerShare>
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                <value>Common Stock, par value, $.01 per share</value>
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            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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                <transactionShares>
                    <value>8000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>30.00</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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                    <value>D</value>
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        <nonDerivativeTransaction>
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                <transactionFormType>4</transactionFormType>
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                <transactionShares>
                    <value>300</value>
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                <transactionPricePerShare>
                    <value>30.20</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>2597853</value>
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                <directOrIndirectOwnership>
                    <value>D</value>
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                    <value></value>
                </natureOfOwnership>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
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                <value>Common Stock, par value, $.01 per share</value>
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                <transactionFormType>4</transactionFormType>
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                <transactionShares>
                    <value>300</value>
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                <transactionPricePerShare>
                    <value>30.22</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>2597553</value>
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                <directOrIndirectOwnership>
                    <value>D</value>
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                </natureOfOwnership>
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        </nonDerivativeTransaction>
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            <securityTitle>
                <value>Common Stock, par value, $.01 per share</value>
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            <transactionDate>
                <value>2004-12-14</value>
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            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>300</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>30.25</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2597253</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Clare A. Dever, under Power of Attorney dated September 10, 2002 from B. Thomas Golisano</signatureName>
        <signatureDate>2004-12-15</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----