TriCo Bancshares
                              63 Constitution Drive
                             Chico, California 95973


                               September 14, 2009

Via EDGAR--CORRES

Hugh West
Accounting Branch Chief
U.S. Securities and Exchange Commission
Washington, D.C 20549

Mail Stop 4720

Re:    TriCo Bancshares
       Form 10-K for Fiscal Year Ended December 31, 2008
       Form 10-Q for Quarterly Period Ended June 30, 2009
       File Number 000-10611

Dear Mr. West:

We have  reviewed  your letter  dated August 31, 2009  regarding  your review of
TriCo Bancshares's (the "Company") Form 10-K for December 31, 2008 and Form 10-Q
for March 31, 2009 filed with the U.S.  Securities and Exchange  Commission (the
"SEC"). Our responses to your comments are set forth below.

Form 10-Q filed for the period ended June 30, 2009
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Item 1. Financial Statements
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Notes to Unaudited Condensed Consolidated Financial Statements
- --------------------------------------------------------------

Allowance for Loan Losses, page 10
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1.        Please revise your future filings to provide the disclosures  required
          by paragraph 20(a) of SFAS 114. Please note that such  disclosures are
          required as of each balance sheet date, including quarterly periods.

Response: The Company will include the  disclosures  required by paragraph 20(a)
          of SFAS 114 in future filings.

Item 2.   Management's  Discussion  and  Analysis  of  Financial  Condition  and
          Results of Operations
          ----------------------------------------------------------------------

Classified Assets, page 30
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2.        We note that consumer loans  (including HELOC and indirect auto loans)
          comprise a significant amount of your overall loan portfolio.  So that
          a reader would have a clear understanding of how management identifies
          problem  loans within these  specific  loan  categories as well as the
          steps  taken to address any  potential  problems,  please  expand your
          disclosure in future filings to address the following:

          o    Discuss the specific risks associated with these types of loans;

          o    Discuss  the  processes   taken  by  management  in   identifying
               potential problem loans;

          o    Discuss  the steps  taken in  identifying  the nature and type of
               underlying collateral supporting these loans;

          o    Discuss how  management  determines  the value of the  underlying
               collateral (i.e. if appraisals are obtained,  how often and under
               what circumstance);

          o    Discuss how shortfalls  are addressed,  including the steps taken
               by  management  to address  these  shortfalls  (i.e.  include the
               timeframe followed); and

          o    Discuss the timing  when both  initial  and any  subsequent  loan
               charge-offs or additional loan loss provisions are recorded.

          Provide us with your proposed future disclosures.

Response:           The Company will enhance its future  disclosures,  beginning
                    with the Form 10-Q for the period ended  September 30, 2009,
                    to disclose how management identifies problem consumer loans
                    and the steps  that it takes to address  potential  problems
                    with such loans.

                    The Company requires additional time to provide its proposed
                    disclosures  in view of their  complexity  and  respectfully
                    requests an extension  until  September  30, 2009 to provide
                    such response.



3.        We note the continued deterioration in the credit quality of your loan
          portfolio  during fiscal 2008 and into fiscal 2009, which has resulted
          in a significant increase in nonperforming loans and assets as well as
          significant  increases  in both  the  loan  loss  provision  and  loan
          charge-offs during that timeframe.  So that a reader will have a clear
          understanding of the deterioration  being experienced within your loan
          portfolio,  please revise your future filings to specifically  discuss
          the nature,  geographical  location and type of loans  contributing to
          these increases,  the problems associated with the specific individual
          loans, the charge-offs recorded,  and the triggering events which lead
          to both the  charge-offs  and the  significantly  increased  loan loss
          provisions.  Additionally,  discuss how these more recent and specific
          events and circumstances have been factored into and considered in the
          determination of the allowance for loan loss methodologies established
          by management. Provide us with your proposed future disclosures.

Response:           The Company will enhance its future  disclosures,  beginning
                    with the Form 10-Q for the period ended  September 30, 2009,
                    to provide additional  disclosures concerning changes in the
                    credit quality of the loan portfolio as requested.

                    The Company requires additional time to provide its proposed
                    disclosures  in view of their  complexity  and  respectfully
                    requests an extension  until  September  30, 2009 to provide
                    such response.

4.        We note  your  tabular  presentation  of  classified  loans  and other
          classified assets. To enable a reader to have a clear understanding of
          the potential exposure within each of your lending categories,  please
          revise  the  presentation  to  identify  the level (or  "grading")  of
          classified  loans and other assets by specific  loan type.  Provide us
          with your proposed future disclosures.

Response:           Beginning with the Form 10-Q for the period ended  September
                    30, 2009, the Company will enhance its tabular  presentation
                    of classified  loans and assets to include  levels or grades
                    of classified loans and other assets by specific loan type.

                    The Company requires additional time to provide its proposed
                    form of tabular  disclosure  and  respectfully  requests  an
                    extension until September 30, 2009 to provide such response.

5.        Tell us  supplementally  and revise your disclosure in future filings,
          to explain  the  nature of the U.S.  Government  guarantees  which are
          considered  by the Company both in the  determination  of the level of
          nonperforming loans in the determination of the loan loss allowance.

Response:           The guarantees are provided by various  government  agencies
                    including the United States Department of Agriculture, Small
                    Business Administration, Bureau of Indian Affairs, Statewide
                    Health Planning  Development,  California  Capital Financial
                    Development  Corporation,  and Safe Bidco.  These guarantees
                    range from 50% to 100% of the loan amount with the  majority
                    at 80% or higher. Historically,  we have disclosed the level
                    of   nonperforming   loans  before   consideration  of  such
                    guarantees  (gross)  and after  consideration  (net) of such
                    guarantees.  We consider these  guarantees when  considering
                    the adequacy of the loan loss allowance.

                    The Company will enhance its future  disclosures,  beginning
                    with the Form 10-Q for the period ended  September 30, 2009,
                    to  explain  the  nature  of  U.S.   Government   guarantees
                    considered in determining the level of  nonperforming  loans
                    and the loan loss allowance.

Nonperforming Loans, page 30
- ----------------------------

6.        Given the significant  increase in nonaccrual loans recognized  during
          fiscal  2008 and into fiscal  2009,  and in order to give the reader a
          clear  understanding  of the problem loans,  please revise the tabular
          presentation,  in future  filings,  to include a detail of  nonaccrual
          loans by loan type.

Response:           Beginning with the Form 10-Q for the period ended  September
                    30, 2009, the Company will enhance its tabular  presentation
                    of problem loans to include a detail of nonaccrual  loans by
                    loan type.

7.        To the extent you continue to  experience  increase in OREO,  consider
          disclosing a  roll-forward  of activity  within OREO in future filings
          (e.g.  beginning  balance,  additions,  sales,  gains  or  losses  and
          impairment and ending balance).

Response:      The Company  will  continue to monitor its level of OREO and will
               disclose  roll-forward  activity  within  OREO in future  filings
               where material.




The Company acknowledges that it is responsible for the adequacy and accuracy of
the  disclosures  included  in  its  SEC  filings.   Additionally,  the  Company
acknowledges  that  comments from the SEC's staff or changes to  disclosures  in
response to staff  comments do not foreclose the SEC from taking any action with
respect to the filings.  The Company will not assert staff comments from the SEC
as a defense in any  proceeding  initiated  by the SEC or any  person  under the
federal securities laws of the United States.

We appreciate your review and insights in the Company's filings. Should you need
additional  information concerning the items during your review or the responses
noted above, please contact me at (530) 898-0300.

Sincerely,

/s/ Thomas J. Reddish
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Thomas J. Reddish
Executive Vice President and Chief Financial Officer
TriCo Bancshaers