PAGE 1 000 B000000 04/30/2014 000 C000000 0001137393 000 D000000 N 000 E000000 NF 000 F000000 Y 000 G000000 N 000 H000000 N 000 I000000 6.1 000 J000000 A 001 A000000 BLACKROCK MUNICIPAL INCOME TRUST 001 B000000 811-10339 001 C000000 8004417762 002 A000000 100 BELLEVUE PARKWAY 002 B000000 WILMINGTON 002 C000000 DE 002 D010000 19809 003 000000 N 004 000000 N 005 000000 N 006 000000 N 007 A000000 N 007 B000000 0 007 C010100 1 008 A000001 BLACKROCK ADVISORS, LLC 008 B000001 A 008 C000001 801-47710 008 D010001 WILMINGTON 008 D020001 DE 008 D030001 19809 008 A000002 BLACKROCK FINANCIAL MANAGEMENT, INC. 008 B000002 S 008 C000002 801-48433 008 D010002 NEW YORK 008 D020002 NY 008 D030002 10022 012 A000001 COMPUTERSHARE TRUST COMPANY, N.A. (COMMON) 012 B000001 85-11340 012 C010001 CANTON 012 C020001 MA 012 C030001 02021 012 A000002 BANK OF NEW YORK MELLON (PREFERRED) 012 B000002 85-05006 012 C010002 NEW YORK 012 C020002 NY 012 C030002 10289 013 A000001 DELOITTE & TOUCHE LLP 013 B010001 BOSTON 013 B020001 MA 013 B030001 02116 014 A000001 BLACKROCK EXECUTION SERVICES 014 B000001 8-48719 PAGE 2 014 A000002 BLACKROCK INVESTMENTS, LLC 014 B000002 8-48436 014 A000003 HARRIS WILLIAMS LLC 014 B000003 8-53380 014 A000004 PNC CAPITAL MARKETS, INC. 014 B000004 8-32493 014 A000005 PNC INVESTMENTS LLC 014 B000005 8-66195 015 A000001 STATE STREET BANK & TRUST COMPANY 015 B000001 C 015 C010001 BOSTON 015 C020001 MA 015 C030001 02110 015 E010001 X 015 A000002 THE BANK OF NEW YORK MELLON 015 B000002 S 015 C010002 NEW YORK 015 C020002 NY 015 C030002 10286 015 E010002 X 015 A000003 J.P. MORGAN CHASE BANK 015 B000003 S 015 C010003 NEW YORK 015 C020003 NY 015 C030003 10017 015 E010003 X 018 000000 Y 019 A000000 Y 019 B000000 287 019 C000000 BLKRKADVSR 020 A000001 J P MORGAN SECURITIES INC 020 B000001 13-3299429 020 C000001 3 020 A000002 BANK OF AMERICA CORP 020 B000002 56-0906609 020 C000002 1 021 000000 4 022 A000001 FFI INSTITUTIONAL TAX-EXEMPT FUND 022 B000001 22-2509978 022 C000001 196200 022 D000001 184185 022 A000002 CITIGROUP GLOBAL MARKETS INC. 022 B000002 11-2418191 022 C000002 54430 022 D000002 52800 022 A000003 MORGAN STANLEY 022 B000003 13-2655998 022 C000003 35029 022 D000003 16204 022 A000004 BANK OF AMERICA CORP 022 B000004 56-0906609 PAGE 3 022 C000004 26892 022 D000004 19627 022 A000005 WELLS FARGO & CO 022 B000005 41-0449260 022 C000005 24109 022 D000005 9303 022 A000006 GOLDMAN SACHS & CO 022 B000006 13-5108880 022 C000006 15747 022 D000006 13806 022 A000007 J.P. MORGAN SECURITIES INC 022 B000007 13-3299429 022 C000007 6952 022 D000007 21550 022 A000008 PERSHING LLC 022 B000008 13-2741729 022 C000008 11103 022 D000008 17251 022 A000009 STIFEL NICOLAUS & COMPANY INCORPORATED 022 B000009 43-0538770 022 C000009 9267 022 D000009 7269 022 A000010 BARCLAYS CAPITAL INC 022 B000010 13-3297824 022 C000010 0 022 D000010 10368 023 C000000 396733 023 D000000 384157 024 000000 N 026 A000000 N 026 B000000 N 026 C000000 N 026 D000000 Y 026 E000000 N 026 F000000 N 026 G010000 N 026 G020000 N 026 H000000 N 027 000000 N 028 A010000 0 028 A020000 0 028 A030000 0 028 A040000 0 028 B010000 0 028 B020000 0 028 B030000 0 028 B040000 0 028 C010000 0 028 C020000 0 028 C030000 0 028 C040000 0 PAGE 4 028 D010000 0 028 D020000 0 028 D030000 0 028 D040000 0 028 E010000 0 028 E020000 0 028 E030000 0 028 E040000 0 028 F010000 0 028 F020000 0 028 F030000 0 028 F040000 0 028 G010000 0 028 G020000 0 028 G030000 0 028 G040000 0 028 H000000 0 030 A000000 0 030 B000000 0.00 030 C000000 0.00 031 A000000 0 031 B000000 0 032 000000 0 033 000000 0 035 000000 0 036 B000000 0 038 000000 0 042 A000000 0 042 B000000 0 042 C000000 0 042 D000000 0 042 E000000 0 042 F000000 0 042 G000000 0 042 H000000 0 043 000000 0 044 000000 0 045 000000 Y 046 000000 N 047 000000 Y 048 000000 0.600 048 A010000 0 048 A020000 0.000 048 B010000 0 048 B020000 0.000 048 C010000 0 048 C020000 0.000 048 D010000 0 048 D020000 0.000 048 E010000 0 048 E020000 0.000 PAGE 5 048 F010000 0 048 F020000 0.000 048 G010000 0 048 G020000 0.000 048 H010000 0 048 H020000 0.000 048 I010000 0 048 I020000 0.000 048 J010000 0 048 J020000 0.000 048 K010000 0 048 K020000 0.000 049 000000 N 050 000000 N 051 000000 N 052 000000 N 053 A000000 Y 053 B000000 Y 053 C000000 N 054 A000000 Y 054 B000000 Y 054 C000000 N 054 D000000 N 054 E000000 N 054 F000000 N 054 G000000 N 054 H000000 Y 054 I000000 N 054 J000000 Y 054 K000000 N 054 L000000 N 054 M000000 Y 054 N000000 N 055 A000000 Y 055 B000000 N 056 000000 Y 057 000000 N 058 A000000 N 059 000000 Y 060 A000000 Y 060 B000000 Y 061 000000 0 062 A000000 Y 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 PAGE 6 062 J000000 0.0 062 K000000 0.0 062 L000000 2.3 062 M000000 0.0 062 N000000 0.0 062 O000000 158.4 062 P000000 0.0 062 Q000000 0.0 062 R000000 0.0 063 A000000 0 063 B000000 24.2 064 A000000 Y 064 B000000 Y 065 000000 N 066 A000000 N 067 000000 N 068 A000000 N 068 B000000 N 069 000000 N 070 A010000 Y 070 A020000 N 070 B010000 N 070 B020000 N 070 C010000 Y 070 C020000 N 070 D010000 N 070 D020000 N 070 E010000 Y 070 E020000 Y 070 F010000 N 070 F020000 N 070 G010000 Y 070 G020000 N 070 H010000 N 070 H020000 N 070 I010000 N 070 I020000 N 070 J010000 Y 070 J020000 N 070 K010000 Y 070 K020000 Y 070 L010000 Y 070 L020000 N 070 M010000 Y 070 M020000 N 070 N010000 Y 070 N020000 N 070 O010000 Y 070 O020000 N 070 P010000 Y 070 P020000 N PAGE 7 070 Q010000 N 070 Q020000 N 070 R010000 Y 070 R020000 N 071 A000000 200533 071 B000000 260579 071 C000000 1002614 071 D000000 20 072 A000000 12 072 B000000 51971 072 C000000 0 072 D000000 0 072 E000000 5 072 F000000 6096 072 G000000 74 072 H000000 0 072 I000000 54 072 J000000 45 072 K000000 0 072 L000000 15 072 M000000 73 072 N000000 16 072 O000000 0 072 P000000 3916 072 Q000000 0 072 R000000 57 072 S000000 11 072 T000000 0 072 U000000 0 072 V000000 0 072 W000000 75 072 X000000 10432 072 Y000000 3 072 Z000000 41547 072AA000000 0 072BB000000 6905 072CC010000 0 072CC020000 44394 072DD010000 40558 072DD020000 0 072EE000000 0 073 A010000 0.9065 073 A020000 0.0000 073 B000000 0.0000 073 C000000 0.0000 074 A000000 989 074 B000000 0 074 C000000 0 074 D000000 1011633 074 E000000 0 074 F000000 0 PAGE 8 074 G000000 0 074 H000000 0 074 I000000 14688 074 J000000 0 074 K000000 0 074 L000000 15132 074 M000000 143 074 N000000 1042585 074 O000000 2561 074 P000000 507 074 Q000000 0 074 R010000 0 074 R020000 0 074 R030000 0 074 R040000 130140 074 S000000 270800 074 T000000 638577 074 U010000 44742 074 U020000 0 074 V010000 14.27 074 V020000 0.00 074 W000000 0.0000 074 X000000 16376 074 Y000000 363443 075 A000000 0 075 B000000 879747 076 000000 13.57 077 A000000 Y 077 B000000 Y 077 O000000 Y 078 000000 N 080 A000000 FEDERAL INSURANCE COMPANY 080 B000000 NAT UNION FIRE INS COMPANY OF PITTSBURGH, PA 080 C000000 68125 081 A000000 Y 081 B000000 82 082 A000000 N 082 B000000 0 083 A000000 N 083 B000000 0 084 A000000 N 084 B000000 0 085 A000000 Y 085 B000000 N 086 A010000 13 086 A020000 0 086 B010000 0 086 B020000 0 086 C010000 0 086 C020000 0 086 D010000 0 PAGE 9 086 D020000 0 086 E010000 0 086 E020000 0 086 F010000 0 086 F020000 0 087 A010000 COMMON STOCK 087 A020000 09248F109 087 A030000 BFK 087 B010000 PREFERRED STOCK 088 A000000 N 088 B000000 N 088 C000000 N 088 D000000 Y SIGNATURE NEAL J. ANDREWS TITLE CFO