<PAGE> PAGE 1
000 A000000 06/30/98
000 C000000 0000061628
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0.a
000 J000000 A
001 A000000 MAIRS AND POWER GROWTH FUND, INC.
001 B000000 811-802
001 C000000 6512228478
002 A000000 332 MINNESOTA ST., SUITE W-1420
002 B000000 ST. PAUL
002 C000000 MN
002 D010000 55101
002 D020000 1363
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
007 C011100 11
007 C011200 12
007 C011300 13
007 C011400 14
007 C011500 15
007 C011600 16
007 C011700 17
007 C011800 18
007 C011900 19
007 C012000 20
007 C012100 21
007 C012200 22
007 C012300 23
007 C012400 24
007 C012500 25
007 C012600 26
007 C012700 27
007 C012800 28
<PAGE> PAGE 2
007 C012900 29
007 C013000 30
020 A000001 PIPER JAFFRAY & HOPWOOD, INC.
020 B000001 41-0688685
020 C000001 96
020 A000002 DAIN BOSWORTH, INCORPORATED
020 B000002 41-0212020
020 C000002 56
020 A000003 GOLDMAN, SACHS & CO.
020 B000003 13-5108880
020 C000003 45
020 A000004 MORGAN STANLEY & CO., INCORPORATED
020 B000004 13-2655998
020 C000004 24
020 A000005 SMITH BARNEY SHEARSON
020 B000005 13-2919773
020 C000005 19
020 A000006 EVEREN SECURITIES, INC.
020 B000006 36-3223831
020 C000006 18
020 A000007 PAINE WEBBER, INCORPORATED
020 B000007 04-1699435
020 C000007 6
020 C000008 0
020 C000009 0
020 C000010 0
021 000000 264
022 A000001 PIPER JAFFRAY & HOPWOOD, INC.
022 B000001 41-0688685
022 C000001 20969
022 D000001 0
022 C000002 0
022 D000002 0
022 C000003 0
022 D000003 0
022 C000004 0
022 D000004 0
022 C000005 0
022 D000005 0
022 C000006 0
022 D000006 0
022 C000007 0
022 D000007 0
022 C000008 0
022 D000008 0
022 C000009 0
022 D000009 0
022 C000010 0
022 D000010 0
023 C000000 20969
023 D000000 0
<PAGE> PAGE 3
027 000000 Y
028 A010000 20887
028 A020000 0
028 A030000 0
028 A040000 2931
028 B010000 26437
028 B020000 0
028 B030000 0
028 B040000 4081
028 C010000 38702
028 C020000 0
028 C030000 0
028 C040000 7199
028 D010000 27442
028 D020000 0
028 D030000 0
028 D040000 8930
028 E010000 18561
028 E020000 0
028 E030000 0
028 E040000 5554
028 F010000 13939
028 F020000 1910
028 F030000 0
028 F040000 5515
028 G010000 145968
028 G020000 1910
028 G030000 0
028 G040000 34210
028 H000000 0
055 A000000 N
055 B000000 N
062 A000000 N
062 B000000 0.0
062 C000000 0.0
062 D000000 0.0
062 E000000 0.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
062 N000000 0.0
062 O000000 0.0
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
066 A000000 Y
<PAGE> PAGE 4
066 D000000 Y
071 A000000 109110
071 B000000 1155
071 C000000 471272
071 D000000 1
072 A000000 6
072 B000000 734
072 C000000 3672
072 D000000 0
072 E000000 0
072 F000000 1538
072 G000000 0
072 H000000 0
072 I000000 210
072 J000000 53
072 K000000 45
072 L000000 18
072 M000000 20
072 N000000 10
072 O000000 0
072 P000000 0
072 Q000000 0
072 R000000 14
072 S000000 3
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 111
072 X000000 2022
072 Y000000 0
072 Z000000 2384
072AA000000 1143
072BB000000 0
072CC010000 29127
072CC020000 0
072DD010000 2092
072DD020000 0
072EE000000 0
073 A010000 0.3500
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
074 A000000 29803
074 B000000 0
074 C000000 0
074 D000000 0
074 E000000 0
074 F000000 527985
074 G000000 0
074 H000000 0
074 I000000 0
<PAGE> PAGE 5
074 J000000 0
074 K000000 0
074 L000000 597
074 M000000 98
074 N000000 558483
074 O000000 1310
074 P000000 0
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 353
074 S000000 0
074 T000000 556820
074 U010000 6016
074 U020000 0
074 V010000 92.56
074 V020000 0.00
074 W000000 0.0000
074 X000000 26166
074 Y000000 0
075 A000000 0
075 B000000 497650
076 000000 0.00
077 A000000 Y
077 C000000 Y
077 L000000 Y
077 Q010000 Y
SIGNATURE GEORGE A. MAIRS, III
TITLE PRESIDENT
<TABLE> <S> <C>
<PAGE>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM SEMI-ANNUAL
REPORT DATED JUNE 30, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1998
<PERIOD-START> JAN-01-1998
<PERIOD-END> JUN-30-1998
<INVESTMENTS-AT-COST> 376046145
<INVESTMENTS-AT-VALUE> 527985420
<RECEIVABLES> 596620
<ASSETS-OTHER> 97904
<OTHER-ITEMS-ASSETS> 29802674
<TOTAL-ASSETS> 558482618
<PAYABLE-FOR-SECURITIES> 1309829
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 352489
<TOTAL-LIABILITIES> 1662318
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 403361477
<SHARES-COMMON-STOCK> 6015593
<SHARES-COMMON-PRIOR> 4760515
<ACCUMULATED-NII-CURRENT> 291785
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1143367
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 29126561
<NET-ASSETS> 556820300
<DIVIDEND-INCOME> 3672035
<INTEREST-INCOME> 733705
<OTHER-INCOME> 0
<EXPENSES-NET> (2021556)
<NET-INVESTMENT-INCOME> 2384184
<REALIZED-GAINS-CURRENT> 1143367
<APPREC-INCREASE-CURRENT> 29126561
<NET-CHANGE-FROM-OPS> 32654112
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (2095437)
<DISTRIBUTIONS-OF-GAINS> 3038
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1607151
<NUMBER-OF-SHARES-REDEEMED> (372655)
<SHARES-REINVESTED> 20583
<NET-CHANGE-IN-ASSETS> 144229681
<ACCUMULATED-NII-PRIOR> 45826
<ACCUMULATED-GAINS-PRIOR> 38597
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1538413
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2021556
<AVERAGE-NET-ASSETS> 497650
<PER-SHARE-NAV-BEGIN> 86.67
<PER-SHARE-NII> 0
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> (.35)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 92.56
<EXPENSE-RATIO> 0
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
<PAGE>
FORM N-SAR
SEMI-ANNUAL REPORT
FOR REGISTERED INVESTMENT COMPANIES
For period ending 6-30-98
File Number 811-802
Attachment Information
----------------------
77Q. 1. Exhibits
for 77C. Matters submitted to a vote of security holders
Attachment being filed with regard to this item is
referenced in the footnotes of the Mairs and Power
Growth Fund 2nd Quarter Report 1998; SUPPLEMENTARY
INFORMATION: 4) An annual meeting of shareholders was
held on May 18, 1998 for the purposes of ...(b) to
amend the Articles of Incorporation of the Fund to
increase the total number of authorized shares to
25,000,000.
Also see "Articles of Amendment" attached.
for 77L. Changes in accounting principles and practices
Attachment being filed with regard to this item is
referenced in the footnotes to the Mairs and Power
Growth Fund 2nd Quarter Report 1998; NOTE B: As of
January 1, 1998, the Fund has retroactively elected to
discontinue the use of the equalization method of
accounting. The now current method being applied is
more consistent with industry standard. The change has
no impact on the net asset value per share.
<PAGE>
ARTICLES OF AMENDMENT
TO
AMENDED AND RESTATED
ARTICLES OF INCORPORATION
OF
MAIRS AND POWER GROWTH FUND, INC.
Mairs and Power Growth Fund, Inc., a corporation
organized and existing under the laws of the State of
Minnesota (herein referred to as the "corporation"), in
accordance with the provisions of Minnesota Statutes, Section
302A.139, hereby certifies as follows:
1. The name of the corporation is Mairs and Power Growth
Fund, Inc.
2. Article VI of the Amended and Restated Articles of
Incorporation of the corporation is hereby amended to read in
its entirety as follows:
ARTICLE VI
The total authorized number of shares in
this corporation shall be twenty-five
million (25,000,000) shares which shall
have a par value of one cent ($.01) per
share.
3. The amendment of the Amended and Restated Articles of
Incorporation of the corporation has been duly adopted by the
Board of Directors and the shareholders pursuant to the
Minnesota Business Corporation Act, Minnesota Statutes,
Chapter 302A.
IN WITNESS WHEREOF, these Articles of Amendment of Mairs
and Power Growth Fund, Inc. are hereby executed on behalf of
the corporation this 9th day of June, 1998.
MAIRS AND POWER GROWTH FUND, INC.
By s/ George A. Mairs
----------------------------
Its President
----------------------------