<SEC-DOCUMENT>0001047469-20-004622-index.html : 20200814
<SEC-HEADER>0001047469-20-004622.hdr.sgml : 20200814
<ACCEPTANCE-DATETIME>20200814162030
ACCESSION NUMBER:		0001047469-20-004622
CONFORMED SUBMISSION TYPE:	S-3ASR
PUBLIC DOCUMENT COUNT:		8
FILED AS OF DATE:		20200814
DATE AS OF CHANGE:		20200814
EFFECTIVENESS DATE:		20200814

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MDU RESOURCES GROUP INC
		CENTRAL INDEX KEY:			0000067716
		STANDARD INDUSTRIAL CLASSIFICATION:	MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS) [1400]
		IRS NUMBER:				301133956
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3ASR
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-246323
		FILM NUMBER:		201105385

	BUSINESS ADDRESS:	
		STREET 1:		1200 WEST CENTURY AVENUE
		CITY:			BISMARCK
		STATE:			ND
		ZIP:			58503
		BUSINESS PHONE:		701-530-1000

	MAIL ADDRESS:	
		STREET 1:		1200 WEST CENTURY AVENUE
		CITY:			BISMARCK
		STATE:			ND
		ZIP:			58503

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MONTANA DAKOTA UTILITIES CO
		DATE OF NAME CHANGE:	19850429
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3ASR
<SEQUENCE>1
<FILENAME>a2242272zs-3asr.htm
<DESCRIPTION>S-3ASR
<TEXT>
Document 1 - file: a2242272zs-3asr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.(B)
<SEQUENCE>2
<FILENAME>a2242272zex-1_b.htm
<DESCRIPTION>EX-1.(B)
<TEXT>
Document 2 - file: a2242272zex-1_b.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.(A)
<SEQUENCE>3
<FILENAME>a2242272zex-5_a.htm
<DESCRIPTION>EX-5.(A)
<TEXT>
Document 3 - file: a2242272zex-5_a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.(B)
<SEQUENCE>4
<FILENAME>a2242272zex-5_b.htm
<DESCRIPTION>EX-5.(B)
<TEXT>
Document 4 - file: a2242272zex-5_b.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.(A)
<SEQUENCE>5
<FILENAME>a2242272zex-23_a.htm
<DESCRIPTION>EX-23.(A)
<TEXT>
Document 5 - file: a2242272zex-23_a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g371506.jpg
<DESCRIPTION>G371506.JPG
<TEXT>
Document 6 - file: g371506.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g699591.jpg
<DESCRIPTION>G699591.JPG
<TEXT>
Document 7 - file: g699591.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g108218.jpg
<DESCRIPTION>G108218.JPG
<TEXT>
Document 8 - file: g108218.jpg

</DOCUMENT>
</SEC-DOCUMENT>