. . . EXHIBIT 21.1 SUBSIDIARIES OF UMPQUA HOLDINGS CORPORATION NAME OF SUBSIDIARY STATE OF OTHER NAMES UNDER WHICH INCORPORATION BUSINESS IS CONDUCTED Umpqua Bank Oregon Umpqua Bank Mortgage Strand, Atkinson, Williams & York, Inc. Oregon Bancorp Financial Services, Inc. California Umpqua Holdings Statutory Trust I Connecticut Umpqua Statutory Trust II Delaware Umpqua Statutory Trust III Delaware Umpqua Statutory Trust IV Delaware Umpqua Statutory Trust V Delaware HB Capital Trust I Delaware Humboldt Bancorp Statutory Trust I Connecticut Humboldt Bancorp Statutory Trust II Connecticut Humboldt Bancorp Statutory Trust III Connecticut CIB Capital Trust Delaware Umpqua Holdings Corporation directly owns 100% of the voting stock of each subsidiary listed above.