1 EXHIBIT 21 ZIONS BANCORPORATION AND SUBSIDIARIES AT DECEMBER 31, 1996 SUBSIDIARY STATE ---------- ----- Zions First National Bank Federally chartered doing business in Utah Nevada State Bank Nevada National Bank of Arizona Federally chartered doing business in Arizona Cash Access, Inc. Utah Lockhart Realty Company Utah Great Western Financial Corporation Utah Zions Credit Corporation Utah Zions Data Service Company Utah Zions Insurance Agency, Inc. Utah Zions Life Insurance Company Arizona