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) January 28, 2005


                     MDU Resources Group, Inc.
      (Exact name of registrant as specified in its charter)



        Delaware                 1-3480            41-0423660
(State or other jurisdiction  (Commission       (I.R.S. Employer
    of incorporation)          File Number)    Identification No.)





                        Schuchart Building
                      918 East Divide Avenue
                           P.O. Box 5650
                 Bismarck, North Dakota 58506-5650
             (Address of principal executive offices)
                            (Zip Code)

 Registrant's telephone number, including area code (701) 222-7900


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.

     On January 28, 2005, MDU Resources Group, Inc. (the "Company")
issued a press release announcing earnings for 2004.  A copy of the
press release, which the Company is furnishing to the Securities
and Exchange Commission (the "SEC"), is attached as Exhibit 99 and
incorporated by reference herein.


Item 7.01.  Regulation FD Disclosure.

     On January 28, 2005, the Company issued a press release
announcing earnings for 2004.  A copy of the press release, which
the Company is furnishing to the SEC, is attached as Exhibit 99 and
incorporated by reference herein.


Item 9.01.  Financial Statement and Exhibits.

     (c)  Exhibits

     99   Press Release issued January 28, 2005, regarding earnings
          for 2004.



                             SIGNATURE

     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.


                              MDU RESOURCES GROUP, INC.

Date  January 28, 2005        BY /s/ Warren L. Robinson
                                 Warren L. Robinson
                                 Executive Vice President and
                                  Chief Financial Officer



                           EXHIBIT INDEX

Exhibit Number                  Description of Exhibit

     99                         Press release issued January 28, 2005,
                                regarding earnings for 2004.