<SEC-DOCUMENT>0001181431-15-004161-index.html : 20150305
<SEC-HEADER>0001181431-15-004161.hdr.sgml : 20150305
<ACCEPTANCE-DATETIME>20150305192257
ACCESSION NUMBER:		0001181431-15-004161
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20150303
FILED AS OF DATE:		20150305
DATE AS OF CHANGE:		20150305

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:			Haggard Billie R.
		CENTRAL INDEX KEY:			0001498222

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34877
		FILM NUMBER:		15678894

	MAIL ADDRESS:	
		STREET 1:		C/O CORESITE REALTY CORPORATION
		STREET 2:		1050 17TH STREET, SUITE 800
		CITY:			DENVER
		STATE:			CO
		ZIP:			80265
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd423395.xml
<TEXT>
Document 1 - file: rrd423395.html

Document 1 - RAW XML: rrd423395.xml

</DOCUMENT>
</SEC-DOCUMENT>