EXHIBIT 99.1

FROM:  Blackhawk Bancorp, Inc.
       400 Broad Street, Beloit, WI 53511

                             FOR IMMEDIATE RELEASE

Contact:  Todd J. James - Executive Vice President and CFO
Phone:    608-299-3476
Fax:      608-364-1500

                 BLACKHAWK BANCORP, INC. REPORTS 2003 EARNINGS

     Beloit, WI February 10, 2004 - Blackhawk Bancorp, Inc. (OTC: BKHB) reported
diluted earnings per share of $0.10 for  the fourth quarter of 2003 compared  to
$0.07 per share in the fourth quarter of 2002.  For the full year ended December
31, 2003 diluted earnings  per share were  $0.48, a 4%  decrease from $0.50  per
share in 2002. The decrease in earnings per share for the year was due to  lower
net interest margin on  earning assets and increased  expenses to integrate  the
acquired operations of DunC Corp. and its subsidiary First Bank, bc.  Net income
for the fourth quarter was  $246,000 compared to net  income of $187,000 in  the
fourth quarter of 2002.   The 2002 fourth  quarter earnings included a  $167,000
after-tax charge to write off a receivable related to a breach of contract claim
against a former provider of data  processing services.  Blackhawk's net  income
for the full year was $1,211,000, a 2% decrease from $1,236,000 in 2002.

     Commenting on the results, R. Richard Bastian, III, the company's President
and Chief Executive Officer, said  "The company dedicated substantial  resources
during the second  half of  the year to  successfully integrate  the First  Bank
acquisition.  This produced a significant drag on short term earnings, including
direct expenses incurred and missed opportunities due to the level of management
and  line  staff  time  dedicated  to  the  effort.  However,"  he  added,  "the
integration is substantially complete and has gone extremely well.  We expect to
realize benefits from the acquisition as early as the first quarter of 2004."

     Net interest income for fourth quarter  2003 of $3,110,000 is up  $424,000,
or 16%,  from a  year ago,  primarily  due to  the  earning assets  and  funding
obtained in the First  Bank acquisition.  The  net interest margin decreased  to
3.46% for the fourth quarter of  2003 compared to 3.67%  for the same period  in
2002.  The decrease in margin  was primarily due to  loan run-off and asset  re-
pricing experienced throughout 2003.  The  reinvestment and re-pricing of  these
assets resulted in an 81  basis point decrease in  the yield on average  earning
assets to 5.46% for the fourth quarter of 2003 compared to 6.27% a year ago. The
average rate paid on  interest bearing liabilities,  however, decreased only  67
basis points  to  2.21% compared  to  the fourth  quarter  of last  year.    The
prolonged, historically low interest rate environment has impacted the company's
ability to continue lowering funding costs.

     Total average  loans for  the fourth  quarter of  2003 increased  by  $43.7
million, or 23%  to $237.8  million compared to  $194.1 million  for the  fourth
quarter of 2003.   Excluding the $45.9  million of loans  obtained in the  First
Bank acquisition, average total loans decreased by $2.2 million compared to  the
fourth quarter of 2002.   Total average  loans for the  year ended December  31,
2003 increased $2.3 million, or  1% compared to the  prior year.  Excluding  the
annualized impact of the First Bank loans acquired on September 30, 2003,  total
average loans decreased $9.2 million or 5%.

     Total average deposits increased by $73.6 million, or 30% to $316.9 million
for the fourth quarter of 2003 compared to $243.3 million for the same period in
2002.   Excluding  the $64.2  million  of deposits  assumed  in the  First  Bank
acquisition, total average deposits  increased $9.4 million,  or 4% compared  to
the fourth quarter of 2002.

     The provision for loan losses of $143,000 for the quarter was $178,000,  or
55% lower than the  2002 fourth quarter provision.  For the year ended  December
31, 2002 the provision for loan losses was $650,000, a $354,000, or 35% decrease
from the 2002 provision of $1,004,000.

     "We  have  devoted  substantial  time  and  resources  to  improved  credit
quality," explained  Bastian.  "Net  charge-offs  for  the  year  were  $316,000
compared to $1,329,000 in 2002. We are  pleased with our progress in this  area,
especially during this  time of economic  weakness in our  primary markets."  At
December 31, 2003, the  allowance for loan losses  to total loans equaled  1.41%
compared to  1.10%  and 1.35%  at  December 31,  2002  and September  30,  2003,
respectively.

     Non-interest income for the fourth quarter  of 2003 increased $113,000,  or
13% to  $981,000 compared  to $868,000  for the  fourth quarter  of 2002.    The
increase is primarily due to the First Bank acquisition, and is partially offset
by a $49,000 reduction in gain on sale of  loans, due to a slowdown in  mortgage
refinance activity.

     Total operating expenses for the fourth  quarter increased by $631,000,  or
20.4% to $3,717,000  compared to $3,086,000  a year ago.   The overall  increase
reflects the additional  operating expenses  related the  First Bank  operations
acquired on  September 30,  2003. It  also  includes approximately  $140,000  of
additional integration related expenses.

     Blackhawk Bancorp,  Inc. is  the parent  company of  Blackhawk State  Bank,
which operates  eleven office  locations in  south central  Wisconsin and  north
central Illinois.  The  stock of Blackhawk Bancorp,  Inc. is publicly traded  on
the Over the Counter Market under the symbol BKHB.

     When used  in  this communication,  the  words "believes,"  "expects,"  and
similar expressions  are intended  to identify  forward-looking statements.  The
Company's actual  results may  differ materially  from  those described  in  the
forward-looking statements. Factors which could cause  such a variance to  occur
include, but  are not  limited to:  heightened  competition; adverse  state  and
federal regulation; failure to obtain new or retain existing customers;  ability
to attract and retain key executives  and personnel; changes in interest  rates;
unanticipated changes  in  industry  trends;  unanticipated  changes  in  credit
quality and  risk factors,  including general  economic conditions;  success  in
gaining regulatory approvals when required; changes in the Federal Reserve Board
monetary policies; unexpected outcomes of new  and existing litigation in  which
Blackhawk or  its  subsidiaries,  officers,  directors  or  employees  is  named
defendants; technological changes;  changes in  accounting principles  generally
accepted in the United  States; changes in  assumptions or conditions  affecting
the application of "critical  accounting policies"; and  the inability of  third
party vendors to perform critical services for the company or its customers.