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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 8-K

                             CURRENT REPORT PURSUANT
                          TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                                 October 12, 2007
                Date of Report (Date of earliest event reported)

                           UNITED SECURITY BANCSHARES
             (Exact Name of Registrant as Specified in its Charter)

                                   California
                 (State or Other Jurisdiction of Incorporation)

                   000-32987                     91-2112732
                  (Commission                  (IRS Employer
                 File Number)                Identification No.)

           2126 Inyo Street, Fresno, CA                         93721
      (Address of Principal Executive Office)                (Zip Code)

                                  559-248-4943
              (Registrant's Telephone Number, Including Area Code)

Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

|_|   Written communications pursuant to Rule 425 under the Securities Act (17
      CFR 230.425)

|_|   Soliciting material pursuant to Rule 14a12 under the Exchange Act (17 CFR
      240.14a-12)

|_|   Pre-commencement communications pursuant to Rule 14d-2(b) under the
      Exchange Act (17 CFR 240.14d-2(b))

|_|   Pre-commencement communications pursuant to Rule 13e-4(c) under the
      Exchange Act (17 CFR 240.13e-4(c))

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ITEM 2.02 RESULTS OF OPERATIONS AND FINANCIAL CONDITION

On October 12, 2007, United Security Bancshares issued a press release reporting
its financial results for the quarter ended September 30 2007. A copy of such
press release is attached, and incorporated herein by reference as Exhibit 99.1

ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS.

(d)   Exhibits.

EXHIBIT #

99.1 Press release of United Security Bancshares dated October 12, 2007



                                   SIGNATURES

      Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this Report to be signed on its behalf by the
undersigned hereunto duly authorized.

                                        United Security Bancshares


Date: October 12, 2007                  By: /s/ Ken Donahue
                                            ------------------------------------
                                            Senior Vice President &
                                            Chief Financial Officer



                                  EXHIBIT INDEX

EXHIBIT #    DESCRIPTION
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99.1         Press release of United Security Bancshares dated October 12, 2007