ZIONS BANCORPORATION BOARD DECLARES DIVIDEND OF $0.43 PER COMMON SHARE

Las Vegas Nevada
July 20, 2007

Nevada State Bank’s parent company, Zions Bancorporation (NASDAQ: ZION) announced today that its board of directors declared a regular quarterly dividend of $0.43 per common share. The dividend is payable August 22, 2007 to shareholders of record on August 8, 2007.

Nevada State Bank, with assets over $4.0 billion, is the fourth largest commercial bank in Nevada. Established in 1959, it is the oldest state-chartered bank in Nevada with a total of 73 branches statewide. Many of these branches are conveniently located in Smith’s Food & Drug Stores, which are open on evenings and weekends. Nevada State Bank is a full-service bank offering a complete range of consumer and business services. For more information on Nevada State Bank, call 702.383.0009 or access www.nsbank.com.