Exhibit 23.1 INDEPENDENT AUDITOR'S CONSENT We consent to the incorporation by reference in Registration Statement No. 333- 74616 of Sierra Bancorp on Form S-8 of our report on the consolidated financial statements of Bank of the Sierra and subsidiary, dated February 2, 2001, appearing in this Annual Report on Form10-K of Sierra Bancorp for the year ended December 31, 2001. /s/ McGLADREY & PULLEN, LLP Pasadena, California March 27, 2002