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):

                                 April 21, 2004

                                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 April 21, 2004

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

On April 21, 2004 TriCo  Bancshares  announced their quarterly  earnings for the
period ended March 31, 2004. 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:  April 21, 2004         By:  /s/ Thomas J. Reddish
                                   --------------------------------------
                                   Thomas J. Reddish, Executive Vice
                                   President and Chief Financial Officer
                                   (Principal Financial and Accounting
                                   Officer)


INDEX TO EXHIBITS

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

    99.1                   Press release dated April 21, 2004








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


              TRICO BANCSHARES ANNOUNCES RECORD QUARTERLY EARNINGS
              ----------------------------------------------------

     Chico, CA - April 21, 2004. TriCo Bancshares (NASDAQ: TCBK), parent company
of Tri Counties Bank, today announced  record  quarterly  earnings of $4,777,000
for the quarter  ended March 31, 2004.  This  represents a 32.2%  increase  when
compared  with  earnings of  $3,613,000  for the quarter  ended March 31,  2003.
Diluted  earnings per share for the quarter ended March 31, 2004 increased 18.0%
to $0.59 from $0.50 for the quarter  ended March 31,  2003.  (Adjusting  for the
2-for-1  stock split  announced on March 11, 2004,  payable on April 30, 2004 to
shareholders of record on April 9, 2004, the diluted  earnings per share for the
quarters ended March 31, 2004 and 2003 are $0.29 and $0.25, respectively.) Total
assets of the Company  increased $274 million (23.3%) to $1.450 billion at March
31, 2004 versus  $1.177  billion at March 31,  2003.  Total loans of the Company
increased  $300  million  (43.3%) to $994  million at March 31, 2004 versus $694
million at March 31, 2003. Total deposits of the Company  increased $207 million
(20.0%) to $1.240  billion at March 31, 2004 versus $1.033  billion at March 31,
2003.
     Included in the results for the quarter ended March 31, 2004 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.
Richard Smith,  President and Chief Executive  Officer  commented,  "We are very
pleased with the  performance  of our company during the quarter ended March 31,
2004. We continue to see good loan demand,  particularly in the consumer sector,
while  the  credit  quality  of our loan  portfolio  remains  high.  We are also
encouraged by our ability to grow  noninterest  income despite a slowdown in the
mortgage  refinance  market.  While the  slowdown  in mortgage  refinancing  has
decreased  our gain on sale of loan revenue it has also  increased the value of,
and the revenue from,  our servicing  those loans that we sold over the last few
years. In addition,  the continued  expansion of our franchise has allowed us to
increase our sale of nondeposit  investment  products,  and add households  that
increase our source of low cost deposits, and service charge and fee revenue. We
will continue to execute our growth  strategy  throughout  the Central Valley of
California  as evidenced by the opening this week of our full service  branch in
the Raley's supermarket at 2900 Geer Road in Turlock, California."
     The  increase  in earnings  for the  quarter  ended March 31, 2004 over the
year-ago quarter was due to a $3,664,000 (27.7%) increase in net interest income
to  $16,898,000,  and a  $359,000  (6.7%)  increase  in  noninterest  income  to
$5,755,000.  The  increase  in net  interest  income  was due to a $291  million
(42.8%) increase in average loan balances to $971 million, and an 18 basis point
increase in fully  tax-equivalent  net  interest  margin to 5.35% in the quarter
ended March 31, 2004 compared to the year-ago quarter.  The $359,000 increase in
noninterest  income was mainly due to a  $581,000  (16.6%)  increase  in service
charges and fees, a $94,000 (21.0%) increase in commission on sale of nondeposit
investment products,  and a $192,000 increase in other noninterest income. These
contributing  factors were partially  offset by a $508,000  (44.8%)  decrease in
gain on sale of  loans.  The  decrease  in gain on sale of loans  was due to the
slowdown in the residential  mortgage  refinance  market that started during the
second half of 2003.  The increase in service  charges and fees is mainly due to
increases  in  the  number  of  deposit  households,   ATM  surcharge  and  card
interchange  fee revenue,  and mortgage  servicing fee revenue.  The increase in
other  noninterest  income is mainly due to a higher  level of  increase in cash
value of life  insurance due to  additional  life  insurance  that was purchased
during the first half of 2003.




     The increases in net interest income and noninterest  income were partially
offset by a $500,000  (333%)  increase in provision for loan losses to $650,000,
and a $1,695,000  (13.4%) increase in noninterest  expense to $14,346,000 in the
quarter  ended March 31,  2004  versus the  year-ago  quarter.  The  increase in
provision  for loan losses is mainly due to loan growth as loan quality  remains
high and loan  charge-offs  remain low. During the quarter ended March 31, 2004,
net loan charge-offs as a percentage of average  outstanding  loans was 0.05% on
an annualized basis. As of March 31, 2004, nonperforming loans net of government
guarantees and the allowance for loan losses were 0.53% and 1.44%, respectively,
of  outstanding  loans.  The increase in  noninterest  expense was mainly due to
salary  expense  related to the addition of a branch in Chico  through the North
State acquisition  (April 2003),  de-novo branches in Roseville  (November 2003)
and Folsom (December 2003), regular salary increases, and incentive compensation
related to the loan and deposit growth.
     As previously  announced on March 11, 2004, the Board of Directors of TriCo
Bancshares approved a two-for-one stock split of its common stock at its meeting
held on March 11, 2004.  The stock split will be effected in the form of a stock
dividend and will entitle each stockholder of record at the close of business on
April 9, 2004 to receive one  additional  share for every share of TriCo  common
stock held on that date.  Shares resulting from the split will be distributed on
April 30, 2004. As of March 11, 2004,  the Company had  7,817,761  common shares
outstanding.
     Also at its  meeting on March 11,  2004,  the Board of  Directors  of TriCo
Bancshares  approved  an  increase  in  the  maximum  number  of  shares  to  be
repurchased  under the Company's stock  repurchase plan originally  announced on
July 31, 2003 from 250,000 to 500,000 to be  effective on April 9, 2004,  solely
to conform  with the  two-for-one  stock split noted above.  The 250,000  shares
originally  authorized for repurchase under this plan represented  approximately
3.2% of the Company's  approximately  7,852,000 common shares  outstanding as of
July 31,  2003.  This plan has no stated  expiration  date for the  repurchases,
which may occur from time to time as market  conditions  allow.  As of April 21,
2004,  the Company had purchased  111,300  shares under this plan,  which leaves
138,700  shares  available  for  repurchase  under the plan.  As a result of the
2-for-1  stock  split on April 30,  2004,  assuming  no  additional  shares  are
repurchased  between  April 21, 2004 and April 30,  2004,  there will be 277,400
shares available for repurchase under the plan.
     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 13 in-store  branch
locations in 21 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 57 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
                                                  ---------------------------------------------------------------------------
                                                    March 31,     December 31,   September 30,     June 30,      March 31,
                                                      2004            2003           2003            2003          2003
                                                  ---------------------------------------------------------------------------
                                                                                                      
Statement of Income Data
      Interest income                                $ 19,912       $ 20,354        $ 19,105       $ 18,161       $ 16,349
      Interest expense                                  3,014          3,224           3,305          3,445          3,115
      Net interest income                              16,898         17,130          15,800         14,716         13,234
      Provision for loan losses                           650            800             150            150            150
      Noninterest income:
         Service charges and fees                       4,081          3,939           3,117          3,985          3,500
         Other income                                   1,674          1,814           2,089          2,569          1,896
      Total noninterest income                          5,755          5,753           5,206          6,554          5,396
      Noninterest expense:
         Salaries and benefits                          8,167          7,741           7,460          7,636          6,877
         Intangible amortization                          331            330             325            324            228
         Other expense                                  5,848          6,388           6,264          6,408          5,546
      Total noninterest expense                        14,346         14,459          14,049         14,368         12,651
      Net income before taxes                           7,657          7,624           6,807          6,752          5,829
      Net income                                      $ 4,777        $ 4,683         $ 4,338        $ 4,254        $ 3,613
Share Data(1)
      Basic earnings per share                         $ 0.31         $ 0.30          $ 0.28         $ 0.27         $ 0.26
      Diluted earnings per share                         0.29           0.29            0.27           0.27           0.25
      Book value per common share                      $ 8.28         $ 8.17          $ 7.95         $ 7.93         $ 7.20
      Shares outstanding                           15,635,522     15,668,248      15,692,002     15,704,220     14,160,940
      Weighted average shares                      15,616,540     15,693,494      15,700,748     15,592,766     14,141,402
      Weighted average diluted shares              16,212,845     16,296,892      16,189,928     16,042,458     14,500,356
Credit Quality
      Non-performing loans, net of
          government agency guarantees                $ 5,265        $ 4,394         $ 6,072       $ 20,539       $ 20,610
      Other real estate owned                             924            932           1,545          1,551          1,608
      Loans charged-off                                   188            859             551          2,063            280
      Loans recovered                                    $ 62          $ 372           $ 406          $ 147           $ 46
      Allowance for loan losses to total loans          1.44%          1.40%           1.45%          1.58%          2.06%
      Allowance for loan losses to NPLs                  272%           313%            222%            66%            69%
      Allowance for loan losses to NPAs                  231%           259%            177%            61%            64%
Selected Financial Ratios
      Return on average total assets                    1.33%          1.29%           1.25%          1.27%          1.26%
      Return on average equity                         14.80%         14.71%          14.09%         13.88%         14.29%
      Average yield on loans                            6.90%          7.17%           7.41%          7.34%          7.64%
      Average yield on earning assets                   6.30%          6.41%           6.32%          6.18%          6.36%
      Average rate on earning liabilities               1.18%          1.26%           1.36%          1.45%          1.52%
      Net interest margin (fully tax-equivalent)        5.35%          5.41%           5.24%          5.02%          5.17%
      Total risk based capital ratio                    11.5%          11.6%           11.7%          10.4%          11.6%
      Tier 1 Capital ratio                              10.3%          10.4%           10.6%           9.1%          10.4%



(1)      Share and per share data for  all periods have been adjsuted to reflect
         the 2-for-1 stock  split announced March 11, 2004 payable  on April 30,
         2004 to shareholders of record on April 9, 2004.






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

                                                                        Three months ended
                                             --------------------------------------------------------------------------
                                               March 31,    December 31,  September 30,     June 30,      March 31,
                                                 2004           2003          2003            2003          2003
                                             --------------------------------------------------------------------------
                                                                                                
Balance Sheet Data
      Cash and due from banks                     $ 55,568      $ 80,603       $ 66,747       $ 65,051      $ 58,925
      Fed funds sold                                     -           326          1,900          3,200        10,100
      Securities, available-for-sale               312,657       316,436        350,941        354,040       354,007
      Loans
         Commercial loans                          131,759       142,252        152,477        147,746       117,329
         Consumer loans                            334,221       319,029        297,186        237,704       210,633
         Real estate mortgage loans                465,429       458,369        420,312        407,218       330,001
         Real estate construction loans             62,656        61,591         60,066         59,622        35,810
      Total loans, gross                           994,065       981,241        930,041        852,290       693,773
      Allowance for loan losses                    (14,297)      (13,773)       (13,460)       (13,455)      (14,293)
      Premises and equipment                        19,288        19,521         19,787         19,830        17,542
      Cash value of life insurance                  39,412        38,980         38,644         34,633        29,257
      Intangible assets                             21,274        21,604         21,992         22,189         3,815
      Other assets                                  22,476        23,817         24,611         23,124        23,377
      Total assets                               1,450,443     1,468,755      1,441,203      1,360,902     1,176,503
         Noninterest bearing demand deposits       260,299       298,462        267,148        260,861       226,373
         Interest bearing demand deposits          222,986       220,875        211,219        204,538       188,575
         Savings deposits                          488,915       441,461        426,340        393,198       324,584
         Time certificates                         267,739       276,025        291,145        315,008       293,120
      Total deposits                             1,239,939     1,236,823      1,195,852      1,173,605     1,032,652
      Fed funds purchased & repurchase
         agreements                                 16,300        39,500         55,700         17,400             -
      Other liabilities                             21,194        20,966         21,312         22,425        19,044
      Other borrowings                              22,877        22,887         22,894         22,905        22,915
      Junior subordinated debt                      20,619        20,619         20,619              -             -
      Total liabilities                          1,320,929     1,340,795      1,316,377      1,236,335     1,074,611
      Total shareholders' equity                   129,514       127,960        124,826        124,567       101,892
      Accumulated other
         comprehensive income                        2,426         1,814          1,223          3,433         2,688
      Average loans                                970,793       951,669        876,068        801,493       679,975
      Average interest earning assets            1,281,032     1,285,905      1,226,453      1,194,618     1,048,286
      Average total assets                       1,440,953     1,447,137      1,384,672      1,339,107     1,149,759
      Average deposits                           1,231,704     1,216,223      1,185,059      1,146,211     1,003,853
      Average total equity                       $ 129,133     $ 127,374      $ 123,168      $ 122,567     $ 101,139