<SEC-DOCUMENT>0001209191-15-071723-index.html : 20150921
<SEC-HEADER>0001209191-15-071723.hdr.sgml : 20150921
<ACCEPTANCE-DATETIME>20150921200407
ACCESSION NUMBER:		0001209191-15-071723
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20150910
FILED AS OF DATE:		20150921
DATE AS OF CHANGE:		20150921

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CoreSite Realty Corp
		CENTRAL INDEX KEY:			0001490892
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1001 17TH STREET
		STREET 2:		SUITE 500
		CITY:			DENVER
		STATE:			CO
		ZIP:			80202
		BUSINESS PHONE:		(866) 777-2673

	MAIL ADDRESS:	
		STREET 1:		1001 17TH STREET
		STREET 2:		SUITE 500
		CITY:			DENVER
		STATE:			CO
		ZIP:			80202

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Warren Brian
		CENTRAL INDEX KEY:			0001653309

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34877
		FILM NUMBER:		151118330

	MAIL ADDRESS:	
		STREET 1:		C/O CORESITE REALTY CORPORATION
		STREET 2:		1001 17TH STREET, SUITE 500
		CITY:			DENVER
		STATE:			CO
		ZIP:			80202
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<DESCRIPTION>FORM 3 SUBMISSION
<TEXT>
Document 1 - file: doc3.html
Document 1 - RAW XML: doc3.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-24 <SEQUENCE>2 <FILENAME>attachment1.htm <DESCRIPTION>EX-24 DOCUMENT <TEXT> Document 2 - file: attachment1.htm
</DOCUMENT> </SEC-DOCUMENT>