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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

Date of Report (Date of earliest event reported) July 28, 2006 (July 24, 2006)

                        Princeton National Bancorp, Inc.
             (Exact name of registrant as specified in its charter)

                                    Delaware
                 (State or other jurisdiction of incorporation)

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<S>                                            <C>
                 0-20050                                   36-3210283
        (Commission File Number)               (IRS Employer Identification No.)
</TABLE>

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<S>                                                        <C>
          606 South Main Street
           Princeton, Illinois                                61356
(Address of Principal Executive Offices)                   (Zip Code)
</TABLE>

Registrant's telephone number, including area code (815) 875-4444

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 14a-12 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.

          The following information, including the Exhibit attached hereto,
          shall not be deemed "filed" for purposes of Section 18 of the
          Securities Exchange Act of 1934.

          On July 24, 2006, Princeton National Bancorp, Inc. issued a news
          release to report its financial results for the quarter and six month
          period ended June 30, 2006. The release is furnished as Exhibit 99.1
          hereto.

ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS

          (d)  Exhibits:

               Exhibit 99.1 July 24, 2006 Press Release


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                                   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.

                                        PRINCETON NATIONAL BANCORP, INC.
                                        (Registrant)


                                        By: /s/ Tony J. Sorcic
                                            ------------------------------------
                                            Tony J. Sorcic, President and
                                            Chief Executive Officer

Dated: July 28, 2006


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                                  EXHIBIT INDEX

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<CAPTION>
NUMBER   DESCRIPTION
------   -----------
<S>      <C>
99.1     July 24, 2006 Press Release
</TABLE>


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