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 20, 2006


                        FIRST FINANCIAL BANKSHARES, INC.
                        --------------------------------
             (Exact Name of Registrant as Specified in its Charter)


          Texas                            0-7674                75-0944023
----------------------------       ---------------------     ------------------
(State or other Jurisdiction       (Commission File No.)     (IRS Employer
of Incorporation)                                            Identification No.)


                      400 Pine Street, Abilene, Texas 79601
                      -------------------------------------
              (Address of Principal Executive Offices and Zip Code)

                  Registrant's Telephone Number (325) 627-7155


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))





ITEM 2.02         Results of Operations and Financial Condition

     Attached  as an exhibit to this Form 8-K is the  earnings  release  for the
quarter ended March 31, 2006 of First Financial Bankshares, Inc.


                                   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.


                                           FIRST FINANCIAL BANKSHARES, INC.
                                           (Registrant)



DATE:  April 20, 2006             By:      /S/ F. Scott Dueser
                                           -------------------------------------
                                           F. SCOTT DUESER
                                           President and Chief Executive Officer





                                                                         EXHIBIT

For immediate release              For More Information:
                                   J. Bruce Hildebrand, Executive Vice President
                                   325.627.7155

                      FIRST FINANCIAL BANKSHARES ANNOUNCES
                         FIRST QUARTER EARNINGS RESULTS

ABILENE, Texas, April 20, 2006 - First Financial Bankshares, Inc. today reported
earnings for the first quarter of 2006 of $11.47  million,  compared with $12.08
million in the same  quarter  last  year.  Basic  earnings  per share were $0.55
compared  with $0.58 in the same period last year.  The 2005 results  included a
$3.0 million special  distribution of proceeds to the Company from the merger of
PULSE EFT  Association and Discover  Financial  Services,  Inc.  Excluding these
special  proceeds,  the  Company's net income in the first quarter of 2006 would
have increased 13.10 percent and its basic earnings per share 12.24 percent.

Net interest  income for the first  quarter  increased  12.22  percent to $25.65
million  compared with $22.86  million in the same quarter last year,  primarily
due to an increase in  interest-earning  assets from the acquisition in December
2005 of The First National Bank of  Bridgeport.  The net interest  margin,  on a
taxable  equivalent  basis,  was 4.41  percent  for the  first  quarter  of 2006
compared  with 4.52 percent in the same period a year ago.  This decrease in the
net interest  margin was due  primarily to the  flattening  yield curve  between
short and long-term  interest rates, which has put pressure on margins in recent
quarters.  The  provision  for loan losses was $333,000 in the first  quarter of
2006, down from $410,000 in the same quarter last year.

Noninterest  income in the first quarter was $11.48 million compared with $13.35
million in the same quarter a year earlier. However, excluding the proceeds from
the PULSE/Discover  transaction described above, noninterest income in the first
quarter of 2005 would have been $10.37 million, a 10.68 percent increase.  Trust
fees increased 7.70 percent to $1.85 million  compared with $1.72 million in the
first  quarter last year.  Revenue from service fees  increased  5.38 percent to
$5.29  million  compared with $5.02 million a year ago. The net gain on the sale
of student loans was $1.41 million versus $1.31 million in the same quarter last
year,  based on the sale of $47  million  compared  to $44  million in the first
quarter of 2005.

Noninterest  expense  increased  10.62  percent in the first  quarter of 2006 to
$20.51  million from $18.54  million in the same quarter last year. The increase
was due  primarily  to  additional  salary,  employee  benefits  and  facilities
expenses  resulting from the  acquisition  of the  Bridgeport  bank and from the
opening of new bank  branches in  Midlothian,  Granbury and two in Abilene.  The
Company's  efficiency ratio in the first quarter stood at 53.54 percent compared
with 49.54  percent in the same quarter a year ago.  Without the  PULSE/Discover
proceeds  described  above,  the first quarter 2005  efficiency  ratio was 53.82
percent.  First Financial expects to realize better  efficiencies as the Company
brings its newly acquired  banks into its template and as newly opened  branches
become profitable.





"We are pleased to begin the year with solid  first  quarter  results,"  said F.
Scott Dueser,  President and Chief  Executive  Officer.  "These came despite the
continuing flat yield curve,  which has put pressure on our net interest margin,
and the highly competitive banking environment in Texas."

As of March 31, 2006,  consolidated assets for the Company totaled $2.76 billion
compared with $2.41 billion a year ago.  Loans  increased  4.66 percent to $1.25
billion at quarter end,  compared  with loans of $1.20 billion at the end of the
2005 first  quarter.  Total  deposits rose 14.01 percent as of March 31, 2006 to
$2.37 billion from $2.08 billion a year earlier.  The  acquisition  of The First
National Bank of  Bridgeport  accounted for $65.9 million of the loan growth and
$132.0  million  of the  deposit  growth.  Shareholders'  equity  rose to $280.6
million as of March 31, 2006, compared with $266.6 million the prior year.

Headquartered  in Abilene,  Texas,  First  Financial  Bankshares  is a financial
holding  company that operates ten separately  chartered banks with 44 locations
in Texas, a trust company and a technology operating company. These subsidiaries
are First Financial Bank, N.A., Abilene,  Clyde and Moran; First Financial Bank,
N.A.,  Eastland,  Ranger and Rising Star; First Financial Bank, N.A.,  Cleburne,
Burleson, Alvarado and Midlothian;  Hereford State Bank, Hereford; City National
Bank, Mineral Wells; San Angelo National Bank, San Angelo; First Financial Bank,
N.A.,  Southlake,  Trophy  Club,  Keller,  Bridgeport,  Decatur and Boyd;  First
Financial Bank, N.A., Stephenville, Granbury and Glen Rose; First National Bank,
Sweetwater, Roby and Trent; Weatherford National Bank, Weatherford,  Willow Park
and Aledo;  First Financial Trust & Asset  Management  Company,  N.A.; and First
Technology Services, Inc.

The Company is listed on The Nasdaq Stock Market under the trading  symbol FFIN.
For more information about First Financial Bankshares, please visit our Web site
at http://www.ffin.com.

                                      *****


Certain   statements   contained  herein  may  be  considered   "forward-looking
statements" as defined in the Private Securities  Litigation Reform Act of 1995.
These statements are based upon the belief of the Company's management,  as well
as  assumptions  made beyond  information  currently  available to the Company's
management,  and may be, but not  necessarily  are,  identified by such words as
"expect", "plan",  "anticipate",  "target",  "forecast" and "goal". Because such
"forward-looking  statements"  are  subject to risks and  uncertainties,  actual
results  may  differ   materially  from  those  expressed  or  implied  by  such
forward-looking  statements.  Factors that could cause actual  results to differ
materially  from the  Company's  expectations  include  competition  from  other
financial  institutions  and  financial  holding  companies;  the effects of and
changes in trade, monetary and fiscal policies and laws, including interest rate
policies  of the  Federal  Reserve  Board;  changes  in the  demand  for  loans;
fluctuations in value of collateral and loan reserves; inflation, interest rate,
market and monetary  fluctuations;  changes in consumer spending,  borrowing and
savings habits;  and  acquisitions and integration of acquired  businesses,  and
similar variables.  Other key risks are described in the Company's reports filed
with the  Securities  and  Exchange  Commission,  which  may be  obtained  under
"Investor  Relations-Documents/Filings"  on the Company's Web site or by writing
or calling the Company at 325.627.7155.  Except as otherwise stated in this news
announcement,  the Company does not undertake any obligation to update  publicly
or revise any  forward-looking  statements  because of new  information,  future
events or otherwise.





                        FIRST FINANCIAL BANKSHARES, INC.
                   CONSOLIDATED FINANCIAL SUMMARY (UNAUDITED)
                 (In thousands, except share and per share data)




                                                                    March 31,
                                                          -------------------------------
                                                               2006              2005
                                                          --------------  ---------------
                                                                    
ASSETS:
Cash and due from banks                                   $      117,189  $        91,934
Fed funds sold                                                   132,925           50,950
Investment securities                                          1,105,816          947,346
Loans                                                          1,254,973        1,199,117
     Allowance for loan losses                                   (15,116)         (14,409)
                                                          --------------  ---------------
Net loans                                                      1,239,857        1,184,708
Premises and equipment                                            60,933           53,997
Goodwill                                                          62,035           50,758
Other intangible assets                                            5,855            2,956
Other assets                                                      33,508           25,692
                                                          --------------  ---------------
     Total assets                                         $    2,758,118  $     2,408,341
                                                          ==============  ===============

LIABILITIES AND SHAREHOLDERS'  EQUITY:
Noninterest-bearing deposits                              $      608,161  $       521,453
Interest-bearing deposits                                      1,760,958        1,556,481
                                                          --------------  ---------------
     Total deposits                                            2,369,119        2,077,934
Short-term borrowings                                             86,384           43,520
Other liabilities                                                 21,987           20,322
Shareholders' equity                                             280,628          266,565
                                                          --------------  ---------------
     Total liabilities and shareholders' equity           $    2,758,118  $     2,408,341
                                                          ==============  ===============

                                                                Three Months Ended
                                                                     March 31,
                                                          -------------------------------
INCOME STATEMENTS                                              2006              2005
                                                          --------------  ---------------
Interest income                                           $       36,401  $        28,534
Interest expense                                                  10,750            5,677
                                                          --------------  ---------------
Net interest income                                               25,651           22,857
Provision for loan losses                                            333              410
                                                          --------------  ---------------
Net interest income after
     provision for loan losses                                    25,318           22,447
Noninterest income                                                11,478           13,350
Noninterest expense                                               20,511           18,542
                                                          --------------  ---------------
     Net income before income taxes                               16,285           17,255
Income tax expense                                                 4,818            5,179
                                                          --------------  ---------------
     Net income                                           $       11,467  $        12,076
                                                          ==============  ===============

PER COMMON SHARE DATA
Net income - basic                                        $         0.55  $          0.58
Net income - diluted                                                0.55             0.58
Cash dividends                                                      0.28             0.26
Book value                                                         13.55            12.88
Market  value                                                      38.30            33.47
Shares outstanding - end of period                            20,717,481       20,688,642
Average outstanding shares - basic                            20,715,484       20,684,392
Average outstanding shares - diluted                          20,773,616       20,772,559

PERFORMANCE RATIOS
Return on average assets                                            1.71 %           2.04 %
Return on average equity                                           16.71            18.19
Net interest margin (tax equivalent)                                4.41             4.52
Efficiency ratio                                                   53.54            49.54



Note:  On  April  26,  2005,  the  Company's  Board  of  Directors   declared  a
four-for-three stock split in the form of a 33% stock dividend effective June 1,
2005.  All  share and per  share  amounts  in this  earnings  release  have been
restated to reflect this stock split.





                        FIRST FINANCIAL BANKSHARES, INC.
                       SELECTED FINANCIAL DATA (UNAUDITED)
                                 (In thousands)




                                                                             Quarter Ended
                                             ---------------------------------------------------------------------------------
                                                  2006                                    2005
                                             ------------   ------------------------------------------------------------------
                                                March 31,      Dec. 31,         Sep. 30,          June 30,         March 31,
                                             ------------   -------------    -------------    ---------------   --------------
                                                                                                 
ALLOWANCE FOR LOAN LOSSES
Balance at beginning of period               $     14,719   $      14,375    $      14,323    $        14,409   $       13,837
Loans charged off                                    (380)           (529)            (486)              (552)            (390)
Loan recoveries                                       444             175              221                143              187
                                             ------------   -------------    -------------    ---------------   --------------
Net (charge-offs) recoveries                           64            (354)            (265)              (409)            (203)
Allowance established at acquisition                    -             429                -                  -              365
Provision for loan losses                             333             269              317                323              410
                                             ------------   -------------    -------------    ---------------   --------------
Balance at end of period                     $     15,116   $      14,719    $      14,375    $        14,323   $       14,409
                                             ============   =============    =============    ===============   ==============

Allowance for loan losses /
     period-end loans                                1.20  %         1.14  %          1.19 %             1.20  %          1.20 %
Allowance for loan losses /
     nonperforming loans                            401.3           415.9            475.1              609.7            462.6
Net charge-offs (recoveries) / average loans
     (annualized)                                   (0.02)           0.11             0.09               0.14             0.07


NONPERFORMING ASSETS
Nonaccrual loans                             $      3,570   $       3,524   $        2,989    $         2,323   $        3,112
Accruing loans 90 days past due                       197              15               37                 26                3
                                             ------------   -------------    -------------    ---------------   --------------
     Total nonperforming loans                      3,767           3,539            3,026              2,349            3,115
Foreclosed assets                                     588             705              796                838            1,138
                                             ------------   -------------    -------------    ---------------   --------------
     Total nonperforming assets              $      4,355   $       4,244    $       3,822    $         3,187   $        4,253
                                             ============   =============    =============    ===============   ==============

As a % of loans and foreclosed assets                0.35  %         0.33  %          0.32 %             0.27  %          0.35 %


CAPITAL RATIOS
Tier 1 Risk-based                                   14.54  %        14.17  %         15.90 %            15.60  %         15.37 %
Total Risk-based                                    15.52           15.13            16.92              16.62            16.41
Tier 1 Leverage                                      8.22            8.56             9.30               9.08             8.94
Equity to assets                                    10.17           10.11            11.15              11.30            11.07






RECONCILIATION OF NET INCOME TO NET                                                                  Three Months Ended
INCOME EXCLUDING GAIN ON SALE OF PULSE                                                                     March 31,
OWNERSHIP RIGHTS                                                                              --------------------------------
                                                                                                     2006              2005
                                                                                              ---------------   --------------
                                                                                                          
Net Income                                                                                    $        11,467   $       12,076
Gain on sale of PULSE ownership rights                                                                      -            2,980
   Less Tax Effect                                                                                          -           (1,043)
                                                                                              ---------------   --------------
         Net Gain on sale of Pulse ownership rights                                                         -            1,937
                                                                                              ---------------   --------------
Net Income excluding gain on sale of Pulse
     Ownership rights                                                                         $        11,467   $       10,139
                                                                                              ===============   ==============






                        FIRST FINANCIAL BANKSHARES, INC.
                       SELECTED FINANCIAL DATA (UNAUDITED)
                                 (In thousands)


                                                                                                     Three Months Ended
                                                                                                          March 31,
                                                                                              --------------------------------
                                                                                                    2006              2005
                                                                                              ---------------   --------------
                                                                                                          
NONINTEREST INCOME
Gain on sale of student loans, net                                                            $         1,410   $        1,309
Gain on sale of PULSE ownership rights                                                                      -            2,980
Gain on securities transactions, net                                                                        -               41
Trust fees                                                                                              1,847            1,715
Service charges on deposits                                                                             5,288            5,018
Real estate mortgage fees                                                                                 449              412
Net gain (loss) on sale of foreclosed assets                                                              (11)              12
ATM and credit card fees                                                                                1,440            1,123
Other noninterest income                                                                                1,055              740
                                                                                              ---------------   --------------
     Total Noninterest Income                                                                 $        11,478   $       13,350
                                                                                              ===============   ==============


                                                                                                      Three Months Ended
                                                                                                          March 31,
                                                                                              --------------------------------
                                                                                                    2006              2005
                                                                                              ---------------   --------------
NONINTEREST EXPENSE
Salaries and Employee Benefits                                                                $        11,388   $        9,879
Net Occupancy Expense                                                                                   1,475            1,155
Equipment Expense                                                                                       1,705            1,486
Printing, Stationery and Supplies                                                                         498              521
ATM and credit card expenses                                                                              810              680
Audit  Fees                                                                                               249              423
Legal, Tax and Professional Fees                                                                          544              734
Correspondent Bank Service Charges                                                                        312              383
Advertising and Public Relations                                                                          567              673
Amortization of Intangible Assets                                                                         226              103
Other Noninterest Expense                                                                               2,737            2,505
                                                                                              ---------------   --------------
     Total Noninterest Expense                                                                $        20,511   $       18,542
                                                                                              ===============   ==============

TAX EQUIVALENT YIELD ADJUSTMENT                                                               $         1,177   $        1,223
                                                                                              ===============   ==============





AVERAGE BALANCES AND YIELD/RATES                                                             Three Months Ended
                                                                                               March 31, 2006
                                                                            ----------------------------------------------------
                                                                                Average        Tax Equivalent         Yield /
                                                                                Balance           Interest             Rate
                                                                            --------------     --------------      -------------
                                                                                                                 
Interest Earning Assets:
  Fed Funds Sold                                                            $      105,580     $        1,117             4.23 %
  Interest Bearing Deposits in Nonaffiliated Banks                                   5,904                 64             4.35 %
  Taxable Securities                                                               841,914              9,250             4.39 %
  Tax Exempt Securities                                                            230,310              3,612             6.27 %
  Loans                                                                          1,286,932             23,535             7.42 %
                                                                            --------------     --------------      -------------
Total Interest Earning Assets                                                    2,470,640             37,578             6.17 %
                                                                                               --------------      -------------
Non-interest Earning Assets                                                        256,474
                                                                            --------------
Total Assets                                                                $    2,727,114
                                                                            ==============

Interest Bearing Liabilities:
  Deposits                                                                  $    1,757,804     $        9,854             2.27 %
  Fed Funds Purchased and Other Short Term Borrowings                               88,229                896             4.12 %
                                                                            --------------     --------------      -------------
Total Interest Bearing Liabilities                                               1,846,033             10,750             2.36 %
                                                                                               --------------      -------------
Non-interest Bearing Liabilities                                                   602,716
Shareholders' Equity                                                               278,365
                                                                            --------------
Total Liabilities and Shareholders' Equity                                  $    2,727,114
                                                                            ==============

Net Interest Income and Margin (Tax Equivalent)                                                $       26,828             4.41 %
                                                                                               ==============      =============