<SEC-DOCUMENT>0001047469-19-001737-index.html : 20190329
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<ACCEPTANCE-DATETIME>20190329071849
ACCESSION NUMBER:		0001047469-19-001737
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		14
CONFORMED PERIOD OF REPORT:	20190516
FILED AS OF DATE:		20190329
DATE AS OF CHANGE:		20190329
EFFECTIVENESS DATE:		20190329

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:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34877
		FILM NUMBER:		19713945

	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
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