<PAGE> PAGE 1
000 A000000 01/31/2000
000 C000000 0000027825
000 D000000 N
000 E000000 NF
000 F000000 Y
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000 H000000 N
000 I000000 6.1
000 J000000 U
001 A000000 DELAWARE GROUP INCOME FUNDS
001 B000000 811-2071
001 C000000 2152552127
002 A000000 2005 MARKET STREET
002 B000000 PHILADELPHIA
002 C000000 PA
002 D010000 19103
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007 C010100 1
007 C020100 DELAWARE DELCHESTER FUND
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007 C020200 DELAWARE STRATEGIC INCOME FUND
007 C030200 N
007 C010300 3
007 C020300 DELAWARE HIGH-YIELD OPPORTUNITIES FUND
007 C030300 N
007 C010400 4
007 C020400 DELAWARE CORPORATE BOND FUND
007 C030400 N
007 C010500 5
007 C020500 DELAWARE EXTENDED DURATION BOND FUND
007 C030500 N
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007 C010800 8
007 C010900 9
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<PAGE> PAGE 2
020 C000010 0
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022 A000001 STARBOARD CAPITAL MARKETS, INC.
022 B000001 23-2770786
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022 D000001 149056
022 A000002 PRUDENTIAL SECURITIES
022 B000002 22-2347336
022 C000002 63506
022 D000002 193643
022 A000003 DONALDSON LUFKIN
022 B000003 13-2741729
022 C000003 87922
022 D000003 77302
022 A000004 BEAR STEARNS
022 B000004 13-3299429
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022 D000004 75317
022 A000005 SPEAR LEEDS & KELLOGG
022 B000005 13-5515160
022 C000005 83667
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022 A000006 CREDIT SUISSE FIRST BOSTON
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022 C000007 45872
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022 C000008 42641
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022 A000010 GOLDMAN SACHS
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<PAGE> PAGE 3
028 A040100 35544
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<PAGE> PAGE 4
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070 F020100 N
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<PAGE> PAGE 5
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<PAGE> PAGE 6
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<PAGE> PAGE 7
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<PAGE> PAGE 8
070 H010200 N
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<PAGE> PAGE 9
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<PAGE> PAGE 10
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<PAGE> PAGE 11
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<PAGE> PAGE 12
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<PAGE> PAGE 13
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<PAGE> PAGE 14
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<PAGE> PAGE 15
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<PAGE> PAGE 16
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<PAGE> PAGE 17
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<PAGE> PAGE 18
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<PAGE> PAGE 19
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<PAGE> PAGE 20
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SIGNATURE KENNETH E. CROCKETT, SR.
TITLE BLUE SKY ADMIN.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000027825
<NAME> DELAWARE GROUP INCOME FUNDS
<SERIES>
<NUMBER> 011
<NAME> DELAWARE DELCHESTER FUND A CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUL-31-1999
<PERIOD-START> AUG-01-1999
<PERIOD-END> JAN-31-2000
<INVESTMENTS-AT-COST> 1,116,886,037
<INVESTMENTS-AT-VALUE> 997,466,518
<RECEIVABLES> 49,625,273
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 3,275,465
<TOTAL-ASSETS> 1,050,367,256
<PAYABLE-FOR-SECURITIES> 18,327,248
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 9,179,428
<TOTAL-LIABILITIES> 27,506,676
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,464,101,150
<SHARES-COMMON-STOCK> 132,167,139
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<NAME> DELAWARE GROUP INCOME FUNDS
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<NAME> DELAWARE GROUP INCOME FUNDS
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<NAME> DELAWARE DELCHESTER FUND C CLASS
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<CIK> 0000027825
<NAME> DELAWARE GROUP INCOME FUNDS
<SERIES>
<NUMBER> 014
<NAME> DELAWARE DELCHESTER FUND INSTITUTIONAL CLASS
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<CIK> 0000027825
<NAME> DELAWARE GROUP INCOME FUNDS
<SERIES>
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<NAME> DELAWARE STRATEGIC INCOME FUND A CLASS
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<CIK> 0000027825
<NAME> DELAWARE GROUP INCOME FUNDS
<SERIES>
<NUMBER> 022
<NAME> DELAWARE STRATEGIC INCOME FUND B CLASS
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<CIK> 0000027825
<NAME> DELAWARE GROUP INCOME FUNDS
<SERIES>
<NUMBER> 023
<NAME> DELAWARE STRATEGIC INCOME FUND C CLASS
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<CIK> 0000027825
<NAME> DELAWARE GROUP INCOME FUNDS
<SERIES>
<NUMBER> 024
<NAME> DELAWARE STRATEGIC INCOME FUND INSTITUTIONAL CLASS
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<TABLE> <S> <C>
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<CIK> 0000027825
<NAME> DELAWARE GROUP INCOME FUNDS
<SERIES>
<NUMBER> 031
<NAME> DELAWARE HIGH YIELD OPPORTUNITIES FUND A CLASS
<S> <C>
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<NAME> DELAWARE GROUP INCOME FUNDS
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<NAME> DELAWARE HIGH YIELD OPPORTUNITIES FUND B CLASS
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<NAME> DELAWARE GROUP INCOME FUNDS
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<NAME> DELAWARE HIGH YIELD OPPORTUNITIES FUND C CLASS
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<CIK> 0000027825
<NAME> DELAWARE GROUP INCOME FUNDS
<SERIES>
<NUMBER> 034
<NAME> DELAWARE HIGH YIELD OPPORTUNITIES FUND INSTITUTIONAL
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<S> <C>
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<CIK> 0000027825
<NAME> DELAWARE GROUP INCOME FUNDS
<SERIES>
<NUMBER> 041
<NAME> DELAWARE CORPORATE BOND FUND A CLASS
<S> <C>
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<CIK> 0000027825
<NAME> DELAWARE GROUP INCOME FUNDS
<SERIES>
<NUMBER> 042
<NAME> DELAWARE CORPORATE BOND FUND B CLASS
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<CIK> 0000027825
<NAME> DELAWARE GROUP INCOME FUNDS
<SERIES>
<NUMBER> 043
<NAME> DELAWARE CORPORATE BOND FUND C CLASS
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<CIK> 0000027825
<NAME> DELAWARE GROUP INCOME FUNDS
<SERIES>
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<NAME> DELAWARE CORPORATE BOND FUND INSTITUTIONAL CLASS
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<TABLE> <S> <C>
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<CIK> 0000027825
<NAME> DELAWARE GROUP INCOME FUNDS
<SERIES>
<NUMBER> 051
<NAME> DELAWARE EXTENDED DURATION BOND FUND A CLASS
<S> <C>
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<TABLE> <S> <C>
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<CIK> 0000027825
<NAME> DELAWARE GROUP INCOME FUNDS
<SERIES>
<NUMBER> 052
<NAME> DELAWARE EXTENDED DURATION BOND FUND B CLASS
<S> <C>
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