EXHIBIT 32.1

CERTIFICATIONS OF CHIEF EXECUTIVE OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of GTJ REIT, Inc. (the “Company”) on Form 10-K for the year ended December 31, 2010 as filed with the Securities and Exchange Commission (the “Periodic Report”), I, Jerome Cooper, Chief Executive Officer of the Company, certify to the best of my knowledge, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. the Periodic Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. the information contained in the Periodic Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: March 31, 2011	/s/ Jerome Cooper
	Jerome Cooper
	Chief Executive Officer