<SEC-DOCUMENT>0001104659-15-033234-index.html : 20150501
<SEC-HEADER>0001104659-15-033234.hdr.sgml : 20150501
<ACCEPTANCE-DATETIME>20150501170035
ACCESSION NUMBER:		0001104659-15-033234
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20150427
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20150501
DATE AS OF CHANGE:		20150501

FILER:

	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

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34877
		FILM NUMBER:		15825175

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>a15-9214_48k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: a15-9214_48k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.1
<SEQUENCE>2
<FILENAME>a15-9214_4ex1d1.htm
<DESCRIPTION>EX-1.1
<TEXT>
Document 2 - file: a15-9214_4ex1d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>3
<FILENAME>a15-9214_4ex5d1.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 3 - file: a15-9214_4ex5d1.htm

</DOCUMENT>
</SEC-DOCUMENT>