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We consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-134125 and No. 333-203397) of United Security Bancshares (the “Company”) of our report dated March 26, 2024, relating to the consolidated financial statements of the Company (which report expresses an unqualified opinion and includes an explanatory paragraph relating to the adoption of new accounting standards related to accounting for credit losses), appearing in this Annual Report on Form 10-K of the Company for the year ended December 31, 2023.