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:    608-364-8911
Fax:      608-363-6186

           BLACKHAWK BANCORP, INC. REPORTS THIRD QUARTER 2003 RESULTS
           ----------------------------------------------------------

     BELOIT, WI November 7, 2003 -  Blackhawk Bancorp, Inc. reported net  income
of $238,000 for the  third quarter of  2003 compared to  $302,000 for the  third
quarter of 2002. Diluted earnings per share were $0.09 for the third quarter  of
2003 compared to $0.12  per share in the  third quarter of  2002.  Total  assets
increased 22.5% to $431,820,000 at September  30, 2003 compared to total  assets
of $352,377,000 at December 31, 2002  and reflect the acquisition of DunC  Corp.
and its  subsidiary  First  Bank,  bc  as of  September  30,  2003  which  added
$77,726,000 to total assets.

     "We were very  pleased to see  the results of  our efforts  to reduce  loan
losses, increase non-interest  income and control  operating expenses," said  R.
Richard Bastian, III, Blackhawk's president and chief executive officer.

     "Unfortunately, these successes were not enough  to offset the pressure  on
net interest margin that resulted from weak loan demand and a low interest  rate
environment.  We are hopeful that the recent improvements in economic conditions
will lead to increased loan demand and an improved margin," he continued.

     "After months of careful  planning, we concluded  the acquisition of  First
Bank, bc. at the end of the quarter with minimal impact on the customers of  our
organization.  This acquisition positions us to be the premier community bank in
the stateline area," concluded Bastian.

     Net interest income for the third  quarter 2003 decreased 20.2 percent,  or
$556,000, to $2,192,000. Net interest margin  decreased to 2.91 percent for  the
third quarter of 2003 compared to 3.76 percent  for the same period in 2002  and
3.67 percent for the fourth quarter of 2002.  Net interest income was  adversely
affected by the repricing of earning  assets to market rates, the investment  of
bank growth into lower  yielding investment securities  and the high  prepayment
speeds which  decreased the  yield on  mortgage-backed  securities held  in  the
company's investment portfolio.

     The average balance of loans decreased  by $1.0 million, or 0.5 percent  to
$192.8 million for the third quarter of 2003 compared to $193.8 million in 2002.
The average balance of  1-4 family residential loans  was $57.2 million for  the
third quarter of 2003 compared to $50.5  million for the second quarter of  2003
and reflects the  effects of the  bank's decision to  retain certain 1-4  family
residential loans mid-way through 2003.

     The average balance  of investment securities  increased $24.9 million,  or
25.7 percent, to $121.9 million for the third quarter of 2003 compared to  $97.0
million in 2002,  reflecting the  investment of  proceeds from  the decrease  in
short-term investments and an increase in deposits.

     Total average deposits increased by $14.4 million, or 6.0 percent to $255.1
million for the third quarter of 2003  compared to $240.7 million for the  third
quarter of  2002.   Of the  $14.4  million increase  in average  deposits,  $3.9
million was in interest bearing checking accounts, which increased 12.0  percent
to $36.4 million compared  to $32.5 million  for the third  quarter of 2002  and
$2.4 million was in  non-interest bearing demand  deposits, which increased  7.8
percent to $33.0  million compared  to $30.6 million  for the  third quarter  of
2002.  Savings deposits increased $.9 million  or 1.7% to $54.8 million for  the
third quarter of 2003.

     The provision for loan losses of $142,000 for the quarter was $280,000,  or
66.4 percent  lower  than the  2002  third quarter  provision.  Net  charge-offs
decreased by $167,000 to $68,000 for the  third quarter of 2003 compared to  net
charge-offs of  $235,000  for  the third  quarter  of  2002. The  ratio  of  the
allowance to total loans increased to 1.35 percent as of September 30, 2003  and
reflects the  effects of  the DunC  Corp. merger,  compared to  1.10 percent  at
December 31, 2002.

     Non-interest income for the  third quarter of  2003 increased $126,000,  or
18.0 percent to  $827,000 compared to  $701,000 for the  third quarter of  2002.
Gain on sale of  1-4 family mortgage loans  increased $63,000, or 66.3  percent,
reflecting the  increased refinance  activity due  to 45-year  lows in  interest
rates.  Other non-interest  income includes an increase  of $68,000 in the  cash
surrender value  of  life  insurance  due  to  the  Bank's  September  30,  2002
investment in  Bank  Owned Life  Insurance.    Security gains  of  $50,000  were
recognized in the third quarter of 2003.   No security gains were recognized  in
the third quarter of 2002.

     Total operating expense for the third quarter increased by $29,000, or  1.1
percent, to $2,669,000 compared to $2,640,000 a year ago.

Year-to-date Results

Blackhawk Bancorp, Inc.  reported year-to-date net  income of  $966,000 for  the
first nine months of 2003  compared to $1,049,000 for  the same period in  2002.
Year-to-date diluted earnings per  share were $0.38 for  2003 compared to  $0.43
per share for 2002.

Net interest income decreased $972,000 or 12.0 percent to $7,148,000 for the
nine months ended September 30, 2003 compared to $8,120,000 for the same period
in 2003 due to lower loan demand, the repricing of earning assets to market
rates, the investment of bank growth into lower yielding investment securities.
Non-interest income increased $532,000 or 24.0 percent to $2,745,000 for the
first nine months of 2003 primarily due to higher levels of security gains and
gains on the sale of mortgage loans that were recognized in 2003. Operating
expenses increased $128,000 or 1.5 percent to $8,388,000 for the nine months
ended September 30, 2003.

     Blackhawk Bancorp,  Inc. is  the parent  company of  Blackhawk State  Bank,
which operates twelve  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.