PAGE 1
000 B000000 03/31/2005
000 C000000 0000895574
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 Y
000 H000000 N
000 I000000 6.1
000 J000000 U
001 A000000 DEL INV FLORIDA INSURED MUNICIPAL INCOME FUND
001 B000000 811-7410
001 C000000 2152552927
002 A000000 2005 MARKET STREET
002 B000000 PHILADELPHIA
002 C000000 PA
002 D010000 19103
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
008 A000001 DELAWARE MANAGEMENT COMPANY/ A SERIES OF DMBT
008 B000001 A
008 C000001 801-3850
008 D010001 PHILADELPHIA
008 D020001 PA
008 D030001 19103
011 A000001 DELAWARE DISTRIBUTORS, L.P.
011 B000001 8-29755
011 C010001 PHILADELPHIA
011 C020001 PA
011 C030001 19103
012 A000001 DELAWARE SERVICE COMPANY, INC.
012 B000001 84-1640
012 C010001 PHILADELPHIA
012 C020001 PA
012 C030001 19103
013 A000001 ERNST & YOUNG LLP
013 B010001 PHILADELPHIA
013 B020001 PA
PAGE 2
013 B030001 19103
014 A000001 DELAWARE DISTRIBUTORS, L.P.
014 B000001 8-14232
014 A000002 THE LINCOLN NATIONAL LIFE INSURANCE COMPANY
014 B000002 8-2580
014 A000003 LINCOLN FINANCIAL ADVISORS CORP.
014 B000003 8-3978
014 A000004 LINCOLN FINANCIAL DISTRIBUTOR, INC.
014 B000004 8-145
014 A000005 ANNUITY NET INSURNACE AGENCY, INC.
014 B000005 8-102780
015 A000001 MELLON BANK N.A.
015 B000001 C
015 C010001 EVERETT
015 C020001 MA
015 C030001 02149
015 E010001 X
018 000000 Y
019 A000000 Y
019 B000000 94
019 C000000 DELAWAREIN
020 C000001 0
020 C000002 0
020 C000003 0
020 C000004 0
020 C000005 0
020 C000006 0
020 C000007 0
020 C000008 0
020 C000009 0
020 C000010 0
021 000000 0
022 A000001 A G EDWARDS & SONS, INC.
022 B000001 43-0895447
022 C000001 0
022 D000001 4928
022 A000002 CITIGROUP GLOBAL MARKETS, INC.
022 B000002 11-2418191
022 C000002 1051
022 D000002 0
022 A000003 BEAR STEARNS & CO
022 B000003 13-3299429
022 C000003 1042
022 D000003 0
022 A000004 BANKAMERICA SECURITIES L.L.C.
022 B000004 56-2058405
022 C000004 1040
022 D000004 0
022 A000005 LEGG MASON WOOD WALKER
022 B000005 52-0902557
022 C000005 0
PAGE 3
022 D000005 1039
022 A000006 GRANT WILLIAMS L.P.
022 B000006 23-2990197
022 C000006 986
022 D000006 0
022 A000007 MORGAN STANLEY & CO.
022 B000007 13-2655998
022 C000007 976
022 D000007 0
022 C000008 0
022 D000008 0
022 C000009 0
022 D000009 0
022 C000010 0
022 D000010 0
023 C000000 5094
023 D000000 5967
024 000000 N
025 D000001 0
025 D000002 0
025 D000003 0
025 D000004 0
025 D000005 0
025 D000006 0
025 D000007 0
025 D000008 0
026 A000000 Y
026 B000000 Y
026 C000000 Y
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
028 D010000 0
028 D020000 0
028 D030000 0
PAGE 4
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 0.400
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
048 F010000 0
048 F020000 0.000
048 G010000 0
PAGE 5
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 N
054 A000000 Y
054 B000000 N
054 C000000 N
054 D000000 Y
054 E000000 Y
054 F000000 N
054 G000000 Y
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
054 M000000 Y
054 N000000 N
054 O000000 Y
055 A000000 N
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
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
PAGE 6
062 N000000 0.0
062 O000000 151.0
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 0
063 B000000 20.9
064 A000000 Y
064 B000000 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 N
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 N
070 L010000 N
070 L020000 N
070 M010000 N
070 M020000 N
070 N010000 N
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 6004
PAGE 7
071 B000000 6459
071 C000000 57132
071 D000000 11
072 A000000 12
072 B000000 3031
072 C000000 0
072 D000000 0
072 E000000 0
072 F000000 232
072 G000000 85
072 H000000 0
072 I000000 90
072 J000000 0
072 K000000 0
072 L000000 0
072 M000000 5
072 N000000 0
072 O000000 1
072 P000000 0
072 Q000000 0
072 R000000 31
072 S000000 10
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 18
072 X000000 472
072 Y000000 0
072 Z000000 2559
072AA000000 298
072BB000000 12
072CC010000 0
072CC020000 1915
072DD010000 2746
072DD020000 0
072EE000000 262
073 A010000 1.1340
073 A020000 0.0000
073 B000000 0.1080
073 C000000 0.0000
074 A000000 188
074 B000000 0
074 C000000 0
074 D000000 56122
074 E000000 0
074 F000000 0
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 0
074 K000000 0
PAGE 8
074 L000000 994
074 M000000 0
074 N000000 57304
074 O000000 0
074 P000000 105
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 33
074 S000000 20000
074 T000000 37166
074 U010000 2422
074 U020000 0
074 V010000 15.34
074 V020000 0.00
074 W000000 0.0000
074 X000000 153
074 Y000000 0
075 A000000 0
075 B000000 37910
076 000000 15.05
077 A000000 Y
077 B000000 Y
077 C000000 N
077 D000000 N
077 E000000 N
077 F000000 N
077 G000000 N
077 H000000 N
077 I000000 N
077 J000000 N
077 K000000 N
077 L000000 N
077 M000000 N
077 N000000 N
077 O000000 N
077 P000000 N
080 A000000 TRAVELERS CASUALTY AND SURETY CO. OF AMERICA
080 B000000 GULF INSURANCE COMPANY, INC
080 C000000 40000
081 A000000 Y
081 B000000 94
082 A000000 Y
082 B000000 50
083 A000000 N
083 B000000 0
084 A000000 N
084 B000000 0
085 A000000 Y
085 B000000 N
PAGE 9
086 A010000 0
086 A020000 0
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
087 A010000 COMMON STOCK
087 A020000 24610T108
087 A030000 VFL
087 B010000 PREFERRED STOCK SERIES A
087 B020000 24610T207
087 C010000 PREFERRED STOCK SERIES B
087 C020000 24610T306
088 A000000 N
088 B000000 N
088 C000000 N
088 D000000 Y
SIGNATURE KENNETH E CROCKETT, SR
TITLE BLUESKY ADMIN