EXHIBIT 23 INDEPENDENT AUDITORS' CONSENT The Board of Directors and Stockholders Heartland Financial USA, Inc.: We consent to incorporation by reference in the Registration Statement on Form S-8 for the 1993 Stock Option Plan of Heartland Financial USA, Inc. of our report dated on January 22, 1998, relating to the consolidated balance sheets of Heartland Financial USA, Inc. and subsidiaries as of December 31, 1997 and 1996, and the related consolidated statements of operations, stockholders' equity, and cash flows for each of the years in the three-year period ended December 31, 1997 which report appears in the December 31, 1997 annual report on Form 10-K of Heartland Financial USA, Inc. and subsidiaries. KPMG Peat Marwick LLP Des Moines, Iowa March 27, 1998