UNITED STATES
                       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, 2003

                                TriCo Bancshares
             (Exact name of registrant as specified in its charter)

       California                   0-10661                   94-2792841
- ------------------------        ---------------          --------------------
     (State or other         (Commission File No.)         (I.R.S. Employer
     jurisdiction of                                      Identification No.)
incorporation or organization)

                 63 Constitution Drive, Chico, California 95973
- --------------------------------------------------------------------------------
              (Address of principal executive offices) (Zip Code)

Registrant's telephone number, including area code:               (530) 898-0300


Item 7(c): Exhibits
- -------------------

        99.1     Press release dated July 28, 2003

Item 12:  Results of Operations and Financial Condition
- -------------------------------------------------------

On July 28, 2003 TriCo Bancshares announced their quarterly earnings for the
second quarter of 2003. A copy of the press release is attached as Exhibit 99.1
to this Form 8-K and is incorporated herein by reference.






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, thereunto duly authorized.

                                   TRICO BANCSHARES

Date:  July 28, 2003          By:  /s/ Thomas J. Reddish
                                   --------------------------------------
                                   Thomas J. Reddish, Vice President and
                                   Chief Financial Officer (Principal
                                   Financial and Accounting Officer)


INDEX TO EXHIBITS

Exhibit No.                Description
- -----------                --------------------------------------------

    99.1                   Press release dated July 28, 2003








PRESS RELEASE                                    Contact:   Thomas J. Reddish
                                                            Vice President & CFO
For Immediate Release                                       (530) 898-0300


            TRICO BANCSHARES ANNOUNCES 2nd QUARTER EARNINGS FOR 2003
            --------------------------------------------------------

     Chico, CA -- July 28, 2003. TriCo Bancshares (NASDAQ: TCBK), parent company
of Tri Counties Bank, today announced quarterly earnings of $4,254,000, or $0.53
per diluted  share,  for the three  months ended June 30,  2003.  These  results
represent a 12.8%  increase from the $0.47  earnings per diluted share  reported
for the three  months  ended June 30, 2002 on earnings  of  $3,365,000.  Diluted
earnings  per share for the six months  ended June 30,  2003 and 2002 were $1.03
and $0.93, respectively, on earnings of $7,867,000 and $6,694,000, respectively.
     Included in the results ended June 30, 2003 was the effect of the Company's
acquisition  of North State  National  Bank on April 4, 2003.  On April 4, 2003,
North  State  National  Bank had  assets of $140  million,  loans  totaling  $77
million,  and deposits totaling $126 million.  The Company issued $13,090,057 in
cash, 723,512 shares of TriCo common stock, and options to purchase 79,587 TriCo
common  shares at an average  exercise  price of $6.22 per share in exchange for
all of the 1,234,375  common shares and options to purchase 79,937 common shares
of North State National Bank outstanding as of April 4, 2003.
     The  improvement  in  results  from  the  year-ago  quarter  was  due  to a
$1,778,000  (13.4%)  increase in fully  tax-equivalent  net  interest  income to
$15,000,000,  a  $350,000  (70.0%)  decrease  in  provision  for loan  losses to
$150,000, and a $2,611,000 (66.2%) increase in noninterest income to $6,554,000.
These  contributing  factors  were  partially  offset  by a  $3,405,000  (31.1%)
increase in noninterest  expense to  $14,368,000  for the quarter ended June 30,
2003.
     Richard Smith,  President and Chief Executive  Officer  commented that, "We
are pleased  with the  Company's  performance  during this most recent  quarter.
Highlights of the quarter include the successful  merger of North State National
Bank  into Tri  Counties  Bank.  The  reactions  of North  State  customers  and
employees to the merger have been very  positive,  and the financial  results of
the merger are exceeding our expectations.  We also experienced  strong internal
loan  growth in all  sectors  of our loan  portfolio  during  this  most  recent
quarter.  We continue to capitalize on the strong mortgage  refinance market for
noninterest income."
     During  the  quarters  ended  June 30,  2003 and 2002,  the  Company's  net
interest margin was 5.02% and 5.74%,  respectively,  on  interest-earning  asset
balances  averaging  $1.19  billion and $921  million,  respectively.  The 29.6%
increase in the average balance of interest  earning assets more than offset the
decrease in net interest margin resulting in an increase in fully tax equivalent
net interest margin of $1,778,000 (13.4%) to $15,000,000.
     Noninterest  income for the second  quarter  of 2003  increased  $2,611,000
(66.2%) to $6,554,000 from $3,943,000 in the year-ago  quarter.  The increase in
noninterest  income from the  year-ago  quarter was mainly due to an increase in
service charges on deposit  products (up $1,626,000 or 104% to $3,192,000),  and
an increase in gain on sale of loans (up  $780,000 or 145% to  $1,319,000).  The
increase  in service  charges  income was mainly due to the  introduction  of an
overdraft  privilege deposit product in July 2002 that has added a new stream of
recurring  noninterest  income.  The increase in gain on sale of loans is due to
the Company's  ability to originate and sell an increased  volume of residential
real  estate  mortgage  loans in the  current  environment  of  record  mortgage
refinance.  ATM fees and interchange  income increased from the year-ago quarter
(up $159,000 or 36.3% to $597,000) due to expansion of Company's ATM network and
increased debit card usage.



     Noninterest  expense for the second  quarter of 2003  increased  $3,405,000
(31.1%) to  $14,368,000  from  $10,963,000  in the second  quarter of 2002.  The
increase in noninterest  expense was mainly due to a $1,863,000 (32.3%) increase
in salary and benefit expense to $7,636,000. The increase in salary and benefits
expense was mainly due to annual  salary  increases,  increased  commission  and
incentive expense, and new employees at the Company's four newly opened branches
in 2002 and from the merger  with North  State  National  Bank on April 4, 2003.
Noninterest   expense  excluding   salaries  and  benefits  also  increased  (up
$1,542,000 or 29.7% to $6,732,000). Approximately $236,000 of this increase were
expenses related to the overdraft privilege product introduced in July 2002, and
included in professional  fees. Also related to the overdraft  privilege product
introduced in July 2002, was a $112,000 increase in operational  losses from the
year-ago quarter.  Increased  advertising  expenses accounted for $69,000 of the
increase in other noninterest expense.
     Provision  for loan  losses  for the second  quarter  of 2003 was  $150,000
versus  $500,000  in the  same  quarter  in  2002.  The  Company  had  net  loan
charge-offs  of $1,916,000 in the second quarter of 2003 compared to $224,000 of
net loan  charge-offs in the same period of 2002. The increase in charge-offs is
primarily due to a $1,900,000  charge-off  related to two commercial real estate
loans to a single entity  collateralized  by a single building.  The Company had
previously  established a specific  allowance for the two commercial real estate
loans  noted  above  in  its  allowance  for  loan  losses.   Based  on  current
information, the Company does not anticipate any further charge-offs or increase
in loan loss provision  related to these two commercial  real estate loans.  The
Company is diligently  pursuing  collection of these two commercial  real estate
loans.
     Nonperforming  loans net of government  agency guarantees were $20,539,000,
$8,180,000,  and $9,553,000 as of June 30, 2003, December 31, 2002, and June 30,
2002,  respectively.  The increase in  nonperforming  loans between December 31,
2002 and June 30, 2003 is mainly due to the two  commercial  real  estate  loans
noted above.  As of June 30, 2003,  December  31, 2002,  and June 30, 2002,  the
ratio of  allowance  for loan losses to total loans was 1.58%,  2.09% and 2.03%,
respectively.  The decrease in the ratio of  allowance  for loan losses to total
loans from 2.09% to 1.58% is due to strong loan growth during the second quarter
of 2003,  including  the  addition of $77 million from the merger of North State
National Bank, and the $1,900,000  charge-off noted above.  Based on the current
conditions  of the loan  portfolio,  Management  believes  that the  $13,455,000
allowance for loan losses at June 30, 2003 is adequate to absorb probable losses
inherent in the Company's loan portfolio.
     Assets of the Company at June 30, 2003 were $1.36 billion compared to $1.03
billion at June 30,  2002.  Loan  balances  at June 30,  2003 were $852  million
compared to $672 million at June 30, 2002, and deposit balances at June 30, 2003
were $1.17 billion compared to $898 million at June 30, 2002.
     For the second  quarter of 2003,  the Company had an  annualized  return on
assets  of 1.27% and a return on  equity  of  13.88%  versus  1.33% and  14.72%,
respectively,  in the  second  quarter  of  2002.  As of June  30,  2003,  TriCo
Bancshares  had a Tier 1 capital  ratio of 9.1% and a total  risk-based  capital
ratio of 10.4%.
     As  previously  announced  on  October  19,  2001,  the Board of  Directors
approved a plan to repurchase,  as conditions  warrant,  up to 150,000 shares of
the  Company's  common  stock  on the  open  market  or in  privately-negotiated
transactions.  The  timing of  purchases  and the  exact  number of shares to be
purchased will depend on market  conditions.  This repurchase  plan  represented
approximately  2.2% of the  Company's  6,992,080  common shares  outstanding  on
October 19, 2001,  and is open-ended  with no expiration  date. As of this date,
the Company has  repurchased  118,800 shares under this plan, with none of those
shares being  repurchased  in the quarter  ended June 30, 2003.  The Company can
repurchase  31,200  shares  under the plan and  intends  to  continue  its share
repurchases as market conditions allow.



     In addition to the  historical  information  contained  herein,  this press
release contains certain  forward-looking  statements.  The reader of this press
release should understand that all such  forward-looking  statements are subject
to  various  uncertainties  and risks  that  could  affect  their  outcome.  The
Company's  actual results could differ  materially  from those suggested by such
forward-looking  statements.  Factors  that could  cause or  contribute  to such
differences  include,  but are not limited to,  variances  in the actual  versus
projected  growth in assets,  return on assets,  loan  losses,  expenses,  rates
charged on loans and earned on securities  investments,  rates paid on deposits,
competition  effects,  fee and other noninterest  income earned as well as other
factors.  This entire press release  should be read to put such  forward-looking
statements  in  context  and  to  gain  a  more  complete  understanding  of the
uncertainties and risks involved in the Company's business.
     TriCo  Bancshares  and  Tri  Counties  Bank  are  headquartered  in  Chico,
California. Tri Counties Bank has a 28 year history in the banking industry. Tri
Counties Bank operates 33 traditional  branch  locations and 10 in-store  branch
locations in 20 California counties. Tri Counties Bank offers financial services
and  provides a  diversified  line of products  and  services to  consumers  and
businesses,  which include demand, savings and time deposits,  consumer finance,
online banking,  mortgage lending,  and commercial banking throughout its market
area.  It  operates  a  network  of 54 ATMs  and a  24-hour,  seven  days a week
telephone customer service center. Brokerage services are provided at the Bank's
offices by the Bank's association with Raymond James Financial, Inc. For further
information    please    visit   the   Tri    Counties    Bank    web-site    at
http://www.tricountiesbank.com






                                      TRICO BANCSHARES - CONSOLIDATED FINANCIAL DATA
                                      (Dollars in thousands, except per share data)

                                                                             Three months ended
                                                  ---------------------------------------------------------------------------
                                                    June 30,        March 31,     December 31,     Sept. 30,       June 30,
                                                      2003            2003           2002            2002           2002
                                                  ---------------------------------------------------------------------------
                                                                                                     
Statement of Income Data
      Interest income                                $ 18,161       $ 16,349        $ 16,228       $ 16,435       $ 16,075
      Interest expense                                  3,445          3,115           3,245          3,227          3,179
      Net interest income                              14,716         13,234          12,983         13,208         12,896
      Provision for loan losses                           150            150             800            700            500
      Noninterest income:
         Service charges and fees                       3,985          3,500           3,651          3,521          2,141
         Other income                                   2,569          1,896           2,347          1,892          1,802
      Total noninterest income                          6,554          5,396           5,998          5,413          3,943
      Noninterest expense:
         Salaries and benefits                          7,636          6,877           6,434          6,344          5,773
         Intangible amortization                          324            228             228            228            228
         Other expense                                  6,408          5,546           5,811          5,561          4,962
      Total noninterest expense                        14,368         12,651          12,473         12,133         10,963
      Net income before taxes                           6,752          5,829           5,708          5,788          5,376
      Net income                                      $ 4,254        $ 3,613         $ 3,748        $ 3,627        $ 3,365
Share Data
      Basic earnings per share                         $ 0.55         $ 0.51          $ 0.53         $ 0.52         $ 0.48
      Diluted earnings per share                         0.53           0.50            0.52           0.50           0.47
      Book value per common share                     $ 15.86        $ 14.39         $ 14.02        $ 13.70        $ 13.25
      Shares outstanding                            7,852,110      7,080,470       7,060,965      7,035,590      7,025,690
      Weighted average shares                       7,796,383      7,070,701       7,046,246      7,026,120      7,011,306
      Weighted average diluted shares               8,021,229      7,250,178       7,211,705      7,231,165      7,213,800
Credit Quality
      Non-performing loans, net of
          government agency guarantees               $ 20,539       $ 20,610         $ 8,180       $ 11,031        $ 9,533
      Other real estate owned                           1,551          1,608             932              -             71
      Loans charged-off                                 2,063            280             870             73            282
      Loans recovered                                   $ 147           $ 46            $ 66          $ 141           $ 58
      Allowance for loan losses to total loans          1.58%          2.06%           2.09%          2.10%          2.03%
      Allowance for loan losses to NPLs                   66%            69%            176%           130%           143%
      Allowance for loan losses to NPAs                   61%            64%            158%           130%           142%
Selected Financial Ratios
      Return on average total assets                    1.27%          1.26%           1.35%          1.39%          1.33%
      Return on average equity                         13.88%         14.29%          15.35%         15.17%         14.72%
      Average yield on loans                            7.34%          7.64%           7.75%          7.89%          8.05%
      Average yield on earning assets                   6.18%          6.36%           6.53%          7.02%          7.12%
      Average rate on earning liabilities               1.45%          1.52%           1.65%          1.72%          1.74%
      Net interest margin                               5.02%          5.17%           5.25%          5.67%          5.74%
      Total risk based capital ratio                    10.4%          11.6%           12.0%          11.9%          12.0%
      Tier 1 Capital ratio                               9.1%          10.4%           10.7%          10.6%          10.8%







                                      TRICO BANCSHARES - CONSOLIDATED FINANCIAL DATA
                                      (Dollars in thousands, except per share data)

                                                                             Three months ended
                                                  -------------------------------------------------------------------------
                                                        June 30,      March 31,    December 31,    Sept. 30,      June 30,
                                                          2003          2003           2002           2002          2002
                                                  -------------------------------------------------------------------------
                                                                                                    
Balance Sheet Data
      Cash and due from banks                           $ 65,051      $ 58,925       $ 67,170       $ 56,749      $ 54,094
      Fed funds sold                                       3,200        10,100          8,100         23,400        27,800
      Securities, available-for-sale                     354,040       354,007        338,024        268,921       234,544
      Loans
         Commercial loans                                147,746       117,329        125,982        142,290       138,770
         Consumer loans                                  237,704       210,633        201,858        191,601       171,178
         Real estate mortgage loans                      407,218       330,001        319,969        313,191       321,260
         Real estate construction loans                   59,622        35,810         39,713         36,472        40,592
      Total loans, gross                                 852,290       693,773        687,522        683,554       671,800
      Allowance for loan losses                          (13,455)      (14,293)       (14,377)       (14,382)      (13,613)
      Premises and equipment                              19,830        17,542         17,224         16,583        16,195
      Cash value of life insurance                        34,633        29,257         15,208         15,045        14,927
      Intangible assets                                   22,189         3,815          4,043          4,387         4,615
      Other assets                                        23,124        23,377         21,660         19,266        19,199
      Total assets                                     1,360,902     1,176,503      1,144,574      1,073,523     1,029,561
         Noninterest bearing demand deposits             260,861       226,373        232,499        202,895       188,546
         Interest bearing demand deposits                204,538       188,575        182,816        175,883       169,343
         Savings deposits                                393,198       324,584        297,926        268,182       255,264
         Time certificates                               315,008       293,120        291,996        290,935       284,757
      Total deposits                                   1,173,605     1,032,652      1,005,237        937,895       897,910
      Fed funds purchased & repurchase agreements         17,400             -              -              -             -
      Other liabilities                                   22,425        19,044         17,399         16,275        15,589
      Other borrowings                                    22,905        22,915         22,924         22,932        22,940
      Total liabilities                                1,236,335     1,074,611      1,045,560        977,102       936,439
      Total shareholders' equity                         124,567       101,892         99,014         96,421        93,122
      Accumulated other
         comprehensive income                              3,433         2,688          2,303          2,333         1,393
      Average loans                                      801,493       679,975        675,626        676,009       648,618
      Average interest earning assets                  1,194,618     1,048,286      1,013,175        954,611       921,486
      Average total assets                             1,339,107     1,149,759      1,112,660      1,044,518     1,009,727
      Average deposits                                 1,146,211     1,003,853        970,666        908,675       879,579
      Average total equity                             $ 122,567     $ 101,139       $ 97,684       $ 95,645      $ 91,429