UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
    
FORM N-Q
OMB APPROVAL
OMB Number: 3235-0578
Expires: February 28, 2006
Estimated average burden
hours per response: 20.0

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED
MANAGEMENT INVESTMENT COMPANY

Investment Company Act File Number: 811-10377

Registrant Name: PIMCO Municipal Income Fund

Address of Principal Executive Offices: 1345 Avenue of the Americas New York, New York 10105

Name and Address of Agent for Service: Lawrence G. Altadonna — 1345 Avenue of the Americas New York, New York 10105

Registrant’s telephone number, including area code: 212-739-3371

Date of Fiscal Year End: April 30, 2007

Date of Reporting Period: July 31, 2006

Form N-Q is to be used by the registered management investment company, other than a small business investment company registered on Form N-5 (§§ 239.24 and 274.5 of this chapter), to file reports with the Commission, not later than 60 days after the close of the first and third fiscal quarters, pursuant to rule 30b 1-5 under the Investment Company Act of 1940 (17 CFR 270.30b1-5). The Commission may use the information provided on Form N-Q in its regulatory, disclosure review, inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-Q, and the Commission will make this information public. A registrant is not required to the collection of information contained in Form N-Q unless the Form displays a currently valid Office of Management and Budget (‘‘OMB’’) control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to the Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. § 3507.




Item 1. Schedule of Investments

PIMCO Municipal Income Fund  
Schedule of Investments
July 31, 2006 (unaudited)


Principal
Amount
(000)
  Credit Rating
(Moody's/S&P)
Value*

MUNICIPAL BONDS & NOTES–93.2%

 

Alabama–3.3%

   
$2,500 Birmingham Baptist Medical Centers Special Care Facs. Financing Auth. Rev., 5.875%, 11/15/24, Ser. A Baa1/NR $2,613,750
8,500 Daphne Special Care Facs. Financing Auth. Rev., zero coupon, 8/15/28, (Pre-refunded @ $100, 8/15/08) (a) Aaa/AAA 7,856,380
8,000 Huntsville Health Care Auth. Rev., 5.75%, 6/1/31, Ser. A A2/NR 8,377,680
      18,847,810
 

Alaska–1.1%

   
6,000 Northern Tobacco Securitization Corp. Rev., 5.50%, 6/1/29 Baa3/BBB 6,093,420
 

Arizona–1.0%

   
2,000 Apache Cnty. Industrial Dev. Auth. Rev., Pollution Control Rev., Tucson Electric Power Co., 5.875%, 3/1/33, Ser. B Ba1/B+ 2,001,840
3,500 Salt River Project Agricultural Improvement & Power Dist. Rev., 4.75%, 1/1/35, Ser. A Aa2/AA 3,518,340
      5,520,180
 

Arkansas–0.3%

   
8,500 Arkansas Dev. Finance Auth. Rev., zero coupon, 7/1/36 (AMBAC) NR/AAA 1,895,670
 

California–3.7%

   
10,000 Golden State Tobacco Securitization Corp., Tobacco Settlement Rev., 6.75%, 6/1/39, Ser. 2003-A-1 Baa3/BBB 11,228,100
10,000 Riverside Cnty. Public Financing Auth., Tax Allocation, 4.50%, 10/1/30, Ser. A (XLCA) Aaa/AAA 9,684,300
      20,912,400
 

Colorado–2.3%

   
  Denver Health & Hospital Auth. Healthcare Rev., Ser. A,    
2,000 5.375%, 12/1/28 Baa3/BBB 2,005,580
1,000 6.00%, 12/1/23 Baa3/BBB 1,053,830
12,400 Health Facs. Auth. Retirement Facs. Rev., zero coupon, 7/15/24 NR/AAA 5,227,840
4,965 Northwest Parkway Public Highway Auth. Rev., 7.125%, 6/15/41, Ser. D B3/CCC 4,620,181
      12,907,431
 

Connecticut–0.2%

   
1,000 State Dev. Auth. Pollution Control Rev., 5.85%, 9/1/28 Baa1/BBB− 1,048,140
 

District of Columbia–1.0%

   
5,325 Tobacco Settlement Financing Corp. Rev., 6.25%, 5/15/24 Baa3/BBB 5,628,046
 

Florida–1.8%

   
9,000 Highlands Cnty. Health Facs. Auth. Rev., Adventist Health System,
6.00%, 11/15/31, Ser. A, (Pre-refunded @ $101, 11/15/11) (a)
A2/A+ 9,994,590
 

Georgia–1.9%

   
  Municipal Electric Auth. Power Rev. (MBIA-IBC),    
9,700 5.50%, 1/1/20 Aaa/AAA 10,603,167
300 5.50%, 1/1/20, Ser. Z, (Pre-refunded @ $100, 1/1/13) (a) NR/AAA 329,811
      10,932,978



PIMCO Municipal Income Fund  
Schedule of Investments
July 31, 2006 (unaudited) (continued)


Principal
Amount
(000)
  Credit Rating
(Moody's/S&P)
Value*
 

Illinois–11.5%

   
  Chicago, GO, Ser. A (FGIC),    
$2,935 5.375%, 1/1/34 Aaa/AAA $3,045,209
6,145 5.375%, 1/1/34, (Pre-refunded @ $101, 1/1/09) (a) Aaa/AAA 6,430,558
10,115 Chicago Board of Education, GO, zero coupon, 12/1/31, Ser. A (FGIC) Aaa/AAA 2,845,956
2,000 Chicago Water Rev., 5.25%, 11/1/27, (Pre-refunded @ $102, 11/1/07) (FGIC)(a) Aaa/AAA 2,076,700
  Educational Facs. Auth. Rev.,    
1,115 Midwestern Univ., 5.50%, 5/15/18, Ser. B NR/A− 1,145,283
  Univ. of Chicago,    
190 5.25%, 7/1/41 Aa1/AA 198,217
4,810 5.25%, 7/1/41, (Pre-refunded @ $101, 7/1/11) (a) Aa1/AA 5,150,831
  Finance Auth. Rev., (Pre-refunded @ $101, 11/15/09) (a),    
5,000 5.50%, 11/15/29 A2/A+ 5,289,600
1,260 5.65%, 11/15/24 A2/A+ 1,338,763
  Health Facs. Auth. Rev.,    
3,000 Decatur Memorial Hospital, 5.75%, 10/1/24 A2/A 3,110,670
5,425 Silver Cross Hospital, 5.50%, 8/15/25, (Pre-refunded @ $101, 8/15/09) (a) NR/A 5,736,775
  Lake Cnty. Community High School Dist., GO, Ser. B (FGIC),    
5,000 zero coupon, 2/1/19 Aaa/AAA 2,822,250
5,000 zero coupon, 2/1/20 Aaa/AAA 2,681,800
5,690 zero coupon, 2/1/22 Aaa/AAA 2,745,084
7,345 Regional Transportation Auth. Rev., 5.50%, 6/1/23, Ser. B (FGIC) Aaa/AAA 8,260,554
3,000 State Sales Tax Rev., 5.125%, 6/15/20, Ser. 1 Aa3/AAA 3,139,650
5,000 Univ. Rev., 5.25%, 4/1/32, Ser. B (FGIC) Aaa/AAA 5,166,400
4,000 Winnebago-Boone ETC Cntys. Rock Valley Community College, Dist. No. 511, GO, 5.30%, 10/1/18, (Pre-refunded @ $100, 10/1/10) (FGIC) (a) Aaa/NR 4,163,040
      65,347,340
 

Indiana–1.7%

   
6,500 Carmel School Building Corp. Rev., 5.00%, 7/15/22 (MBIA) Aaa/AAA 6,698,640
1,225 Richland-Bean Blossom School Building Corp. Rev., 5.00%, 1/15/22 (FGIC) Aaa/AA− 1,256,801
1,825 Zionsville Community Schools Building Corp. Rev., 5.00%, 7/15/27, Ser. A (FSA) NR/AAA 1,873,983
      9,829,424
 

Kansas–3.6%

   
  Wichita Hospital Rev.,    
5,000 5.625%, 11/15/31, Ser. III NR/A+ 5,251,500
14,370 6.25%, 11/15/24, Ser. XI NR/A+ 15,329,772
      20,581,272



PIMCO Municipal Income Fund  
Schedule of Investments
July 31, 2006 (unaudited) (continued)


Principal
Amount
(000)
  Credit Rating
(Moody's/S&P)
Value*
 

Kentucky–0.7%

   
$3,680 Economic Dev. Finance Auth. Hospital Facs. Rev., St. Luke's Hospital, 6.00%, 10/1/19 A3/A $4,049,104
 

Louisiana–6.1%

   
4,905 Local Gov't Environmental Facs. & Community Dev. Auth. Rev., 6.55%, 9/1/25 (ACA) NR/A 5,385,837
27,895 Tobacco Settlement Financing Corp. Rev., 5.875%, 5/15/39, Ser. 2001-B Baa3/BBB 29,319,598
      34,705,435
 

Maryland–0.2%

   
1,150 Baltimore Water Project Rev., 5.125%, 7/1/42, Ser. A (FGIC) Aaa/AAA 1,186,892
 

Massachusetts–1.8%

   
9,000 Commonwealth of Massachusetts Rev., 5.50%, 1/1/34 (FGIC) Aaa/AAA 10,340,280
 

Michigan–4.3%

   
  Detroit, GO, Ser. A-1 (MBIA),    
1,000 5.375%, 4/1/15 Aaa/AAA 1,066,370
1,000 5.375%, 4/1/17 Aaa/AAA 1,063,010
5,650 Forest Hills Public Schools, GO, 5.25%, 5/1/18, (Pre-refunded @ $100, 5/1/10) (a) Aa2/NR 5,929,054
3,000 Mount Clemens Community School Dist., GO, 5.00%, 5/1/31 Aa2/AA 3,069,180
50 Royal Oak Hospital Finance Auth. Rev., William Beaumont Hospital, 5.25%, 11/15/35, Ser. M (MBIA) Aaa/AAA 51,340
4,000 State Hospital Finance Auth. Rev., Detroit Medical Center, 6.25%, 8/15/13 Ba3/BB− 4,014,600
2,000 State Strategic Fund Ltd. Obligation Rev., Detroit Edison Pollution Control Co., 5.45%, 9/1/29 A3/BBB+ 2,089,000
3,000 Taylor Tax Increment Finance Auth., 5.375%, 5/1/17 (FSA) Aaa/AAA 3,181,770
6,255 Wayne Charter Cnty. Airport Fac. Rev., 6.75%, 12/1/15 (k) NR/NR 4,010,581
      24,474,905
 

Minnesota–0.6%

   
  Agricultural & Economic Dev. Board Rev., Health Care System,    
95 6.375%, 11/15/29 A2/A 104,359
2,905 6.375%, 11/15/29, (Pre-refunded @ $101, 11/15/10) (a) A2/A 3,220,222
      3,324,581
 

Missouri–0.5%

   
2,500 Interstate 470 & 350 Transportation Dev. Dist. Rev., 6.35%, 5/1/22 NR/NR 2,535,875
 

Nevada–1.4%

   
3,000 Clark Cnty. Rev., 5.25%, 7/1/34, Ser. B, (Pre-refunded @ $100, 7/1/11) (FGIC) (a) Aaa/AAA 3,190,350
4,250 Truckee Meadows Water Auth. Rev., 5.25%, 7/1/34, Ser. A, (Pre-refunded @ $100, 7/1/11) (FSA) (a) Aaa/AAA 4,519,662
      7,710,012



PIMCO Municipal Income Fund  
Schedule of Investments
July 31, 2006 (unaudited) (continued)


Principal
Amount
(000)
  Credit Rating
(Moody's/S&P)
Value*
 

New Hampshire–0.6%

   
$3,000 State Business Finance Auth. Pollution Control Rev., Conn. Light & Power Co., 5.85%, 12/1/22 Baa1/BBB− $3,143,790
 

New Jersey–3.9%

   
  Camden Cnty., Improvement Auth. Rev., Cooper Health System,    
240 5.60%, 2/15/07 Baa3/BBB 240,082
875 6.00%, 2/15/27, Ser. A (Pre-refunded @ $102, 2/15/07) (a) Baa3/BBB 902,440
16,550 Economic Dev. Auth., Kapkowski Landfill Project, 5.75%, 4/1/31 Baa3/NR 17,704,197
  Economic Dev. Auth. Rev., Arbor Glen,    
2,510 5.875%, 5/15/16 NR/NR 2,576,440
490 5.875%, 5/15/16, Ser. A, (Pre-refunded @ $102, 5/15/09) (a) NR/NR 524,868
      21,948,027
 

New Mexico–0.5%

   
2,500 Farmington Pollution Control Rev., 5.80%, 4/1/22 Baa2/BBB 2,528,750
 

New York–2.0%

   
5,000 Liberty Dev. Corp. Rev., Goldman Sachs Headquarters, 5.25%, 10/1/35 Aa3/A+ 5,484,450
3,000 New York City Municipal Water Finance Auth., Water & Sewer System Rev., 5.00%, 6/15/39, Ser. A Aa2/AA+ 3,068,340
2,875 Westchester Cnty. Healthcare Corp. Rev., 5.875%, 11/1/25, Ser. A Ba2/BB 2,915,250
      11,468,040
 

North Carolina–0.5%

   
3,000 Capital Facs. Finance Agcy. Rev., Duke Univ. Project, 5.125%, 10/1/41, Ser. A Aa1/AA+ 3,078,360
 

Ohio–1.2%

   
  Lorain Cnty. Hospital Rev., Catholic Healthcare Partners,    
2,500 5.625%, 10/1/17 Aa3/AA− 2,661,025
2,565 5.75%, 10/1/18 Aa3/AA− 2,738,753
1,235 State Turnpike Commission Rev., 5.50%, 2/15/15 Aa3/AA 1,307,421
      6,707,199
 

Pennsylvania–4.1%

   
  Allegheny Cnty.,    
5,780 Hospital Dev. Auth. Rev., 9.25%, 11/15/30, Ser. B Ba3/B+ 6,864,733
1,000 Industrial Dev. Auth. Rev., USX Corp., 5.60%, 9/1/30 Baa1/BBB+ 1,031,600
1,095 Port Auth. Rev., 5.25%, 3/1/20 (FGIC) Aaa/AAA 1,154,250
2,575 Delaware Cnty. Auth. College Rev., Neumann College, 5.80%, 10/1/17 NR/BBB− 2,680,549
6,200 Higher Educational Facs. Auth. Rev., 6.00%, 1/15/31, Ser. A Aa3/A+ 6,710,570
4,610 Philadelphia Hospitals & Higher Education Facs. Hospital Rev., Temple Univ. Hospital, 6.625%, 11/15/23, Ser. A Baa2/BBB 4,679,150
      23,120,852
 

Puerto Rico–2.2%

   
1,600 Electric Power Auth., Power Rev., 5.125%, 7/1/29, Ser. NN A3/BBB+ 1,643,456
10,665 Gov't Dev. Bank for Puerto Rico Rev., 5.00%, 12/1/08, Ser. B BBB/BAA3 10,858,783
      12,502,239



PIMCO Municipal Income Fund  
Schedule of Investments
July 31, 2006 (unaudited) (continued)


Principal
Amount
(000)
  Credit Rating
(Moody's/S&P)
Value*
 

Rhode Island–3.3%

   
$18,000 Tobacco Settlement Financing Corp. Rev., 6.25%, 6/1/42, Ser. A Baa3/BBB $18,882,900
 

South Carolina–4.7%

   
  Greenwood Cnty. Hospital Rev., Self Memorial Hospital,    
3,500 5.50%, 10/1/21 A2/A 3,654,455
2,000 5.50%, 10/1/26 A2/A 2,084,520
3,000 Jobs Economic Dev. Auth. Hospital Facs. Rev., Georgetown Memorial Hospital, 5.375%, 2/1/30 (Radian) NR/AA 3,109,470
15,600 Tobacco Settlement Rev., Management Auth. Rev., 6.375%, 5/15/30, Ser. B Baa3/BBB 17,554,056
      26,402,501
 

Tennessee–0.2%

   
940 Memphis Health Educational & Housing Fac., Wesley Housing Corp. Project, 6.95%, 1/1/20 (e) NR/NR 891,858
 

Texas–13.3%

   
1,750 Austin Convention Enterprises, Inc., 5.75%, 1/1/32, Ser. B A3/NR 1,801,993
4,000 Austin Rev., 5.25%, 5/15/31, Ser. A & B (FSA) Aaa/AAA 4,134,480
2,935 Bell Cnty. Health Fac. Dev. Corp., 5.25%, 11/15/19 NR/A− 2,962,736
10,000 Coppell Independent School Dist., GO, zero coupon, 8/15/29 (PSF-GTD) NR/AAA 3,220,600
  Corpus Christi Refinance & Improvement, GO (FSA),    
1,125 5.375%, 3/1/18 Aaa/AAA 1,192,466
1,740 5.375%, 3/1/18, (Pre-refunded @ $100, 3/1/11) (a) Aaa/AAA 1,854,857
9,000 Cypress-Fairbanks Independent School Dist., GO, 4.80%, 2/15/26, Ser. B (PSF-GTD) (c) AAA/AAA 9,035,460
  Duncanville Independent School Dist., GO, Ser. B (PSF-GTD),    
20 5.25%, 2/15/32 AAA/AAA 20,876
3,660 5.25%, 2/15/32, (Pre-refunded @ $100, 2/15/12) (a) AAA/AAA 3,916,895
  Harris Cnty. Health Facs. Dev. Corp. Rev. (a),    
5,000 Christus Health, 5.375%, 7/1/29, Ser. A, (Pre-refunded @ $101, 7/1/09) (MBIA) Aaa/AAA 5,268,200
7,000 Memorial Hermann Healthcare, 6.375%, 6/1/29, (Pre-refunded @ $101, 6/1/11) A2/A 7,833,000
1,840 Houston, CP, 6.25%, 12/15/12, Ser. J (AMBAC) Aaa/AAA 2,072,760
2,000 Mansfield Independent School Dist., GO, 5.25%, 2/15/23 (PSF-GTD) Aaa/AAA 2,087,520
4,380 Southlake Park Dev. Corp. Rev., 5.60%, 8/15/31, (Pre-refunded @ $100, 2/15/11) (AMBAC) (a) Aaa/AAA 4,615,863
4,530 State, GO, 5.30%, 8/1/18, Ser. A Aa1/AA 4,772,763
19,990 State Turnpike Auth. Rev., zero coupon, 8/15/25, Ser. A (AMBAC) Aaa/AAA 7,925,835
4,920 Univ. Rev., 5.00%, 7/1/26, Ser. B Aaa/AAA 5,111,880
7,450 Water Dev. Board Rev., 5.125%, 7/15/18 Aaa/AAA 7,493,359
      75,321,543



PIMCO Municipal Income Fund  
Schedule of Investments
July 31, 2006 (unaudited) (continued)


Principal
Amount
(000)
  Credit Rating
(Moody's/S&P)
Value*
 

Utah–1.3%

   
$7,000 Salt Lake Cnty. Hospital Rev., IHC Health Services, 5.125%, 2/15/33 (AMBAC) Aaa/AAA $7,194,810
 

Washington–2.2%

   
  Cowlitz Cnty. School Dist. No. 458 Kelso, GO (FSA),    
910 5.625%, 12/1/14 NR/NR 993,038
985 5.625%, 12/1/14, (Pre-refunded @ $100, 12/1/11) (a) NR/NR 1,071,404
1,225 5.625%, 12/1/16, (Pre-refunded @ $100, 12/1/11) (a) Aaa/NR 1,332,457
3,415 Kent, GO, 5.375%, 12/1/20 (MBIA) NR/NR 3,620,071
5,420 King Cnty. School Dist. No. 1 Seattle, GO, 5.25%, 12/1/21, Ser. A (MBIA) Aaa/AAA 5,696,745
      12,713,715
 

Wisconsin–4.2%

   
  Badger Tobacco Asset Securitization Corp.,    
5,000 5.75%, 6/1/12 Baa3/BBB 5,254,150
9,785 6.00%, 6/1/17 Baa3/BBB 10,308,987
3,515 State, GO, 5.00%, 5/1/22, Ser. A (FGIC) Aaa/AAA 3,649,695
2,230 State Health & Educational Facs. Auth. Rev., Kenosha Hospital & Medical Center, 5.625%, 5/15/29 NR/A 2,274,243
2,250 Wisconsin Health & Educational Facs. Auth., Divine Savior Healthcare Rev., 5.00%, 5/1/32 NR/BBB 2,214,607
      23,701,682
  Total Municipal Bonds & Notes (cost–$502,168,283)   527,472,051

VARIABLE RATE NOTES (b)(f)(g)–5.7%

 

Hawaii–0.3%

   
1,388 City & Cnty. of Honolulu Rev., 9.40%, 7/1/23, Ser. 400 (FGIC) Aaa/NR 1,592,989
  Illinois–1.1%    
2,902 Cook Cnty., GO, 9.40%, 11/15/28, Ser. 458 (FGIC) Aaa/NR 3,352,155
2,765 Educational Facs. Auth. Rev., 7.657%, 7/1/38 NR/AA 3,032,182
      6,384,337
 

Massachusetts–0.5%

   
2,000 State Health & Educational Facs. Auth. Rev., 10.834%, 7/1/32 NR/NR 2,648,000
 

Nevada–0.5%

   
2,440 Washoe Cnty., GO, 9.423%, 1/1/35, Ser. 1241 (MBIA) Aaa/AAA 2,817,859
 

New York–1.7%

   
224 New York City Municipal Water Finance Auth., Water & Sewer System Rev., 9.51%, 6/15/37, Ser. 1226 Aa2/NR 253,792
  New York City Municipal Water Finance Auth. Rev.,    
6,000 6/15/39 (c)(d)(e) AA+/AA2 6,609,480
2,600 6.992%, 6/15/26 NR/AA+ 3,006,640
      9,869,912



PIMCO Municipal Income Fund  
Schedule of Investments
July 31, 2006 (unaudited) (continued)


Principal
Amount
(000)
  Credit Rating
(Moody's/S&P)
Value*
 

Texas–1.2%

   
  Harris Cnty. Health Facs. Dev. Corp. Rev.,    
$1,720 8.841%, 2/15/26 NR/AA− $2,311,852
3,595 11.28%, 7/1/29, Ser. 357 (MBIA) Aaa/NR 4,559,179
      6,871,031
 

Washington–0.4%

   
1,800 Seattle, GO, 10.03%, 12/15/28, Ser. 348 Aa1/NR 2,007,630
  Total Variable Rate Notes (cost–$27,321,101)   32,191,758

VARIABLE RATE DEMAND NOTES (g)(h)–1.0%

 

Alaska–0.0%

   
200 Valdez Rev., 3.60%, 8/1/06 VMIG1/A-1+ 200,000
 

California–0.4%

   
165 State Department of Water Res. Rev., 3.66%, 8/1/06 A-1+/A-1+ 165,000
2,020 State of California, Daily Kindergarten Univ., GO, 3.63%, 8/1/06 VMIG1/A-1+ 2,020,000
      2,185,000
 

Indiana–0.0%

   
100 Indiana Health Fac. Financing Auth. Rev., 3.70%, 8/1/06 VMIG1/A-1 100,000
 

Massachusetts–0.3%

   
1,500 Commonwealth of Massachusetts Rev., GO, 3.62%, 8/1/06, Ser. B A-1+/A-1+ 1,500,000
 

New York–0.3%

   
1,500 New York City Transitional Finance Auth. Rev., 3.65%, 8/1/06 VMIG1/A-1+ 1,500,000
  Total Variable Rate Demand Notes (cost–$5,485,000)   5,485,000

U.S. TREASURY BILLS (i)–0.2%

1,190 4.785%-4.85%, 9/14/06 (cost–$1,182,999)   1,182,999

OPTIONS PURCHASED (j)–0.0%

Contracts      
 

Put Options–(0.0%)

   
  Eurodollar Futures, Chicago Mercantile Exchange,    
125 strike price $92, expires 3/19/07 (cost–$1,187)   781
 

Total Investments before options written(cost–$536,158,570)100.1%

  566,332,589
 

OPTIONS WRITTEN(j)–(0.1)%

   
 

Call Options–(0.1)%

   
  U.S. Treasury Notes 10 yr. Futures, Chicago Board of Trade,    
137 strike price $107, expires 8/25/06   (14,984)
836 strike price $108, expires 11/21/06   (248,188)
      (263,172)



PIMCO Municipal Income Fund  
Schedule of Investments
July 31, 2006 (unaudited) (continued)


Contracts     Value*
 

Put Options–(0.0)%

   
  U.S. Treasury Notes 10 yr. Futures, Chicago Board of Trade,    
973 strike price $103, expires 8/25/06   $(15,203)
  Total Options Written (premiums received–$289,394)   (278,375)
 

Total Investments net of options written(cost–$535,869,176)–100.0%

  $566,054,214



Notes to the Schedule of Investments:

Portfolio securities and other financial instruments for which market quotations are readily available are stated at market value. Portfolio securities and other financial instruments for which market quotations are not readily available or if a development/event occurs that may significantly impact the value of a security are fair-valued, in good faith, pursuant to guidelines established by the Board of Trustees. The Fund’s investments are valued daily using prices supplied by an independent pricing service or dealer quotations, or are valued using the last sale price on the exchange that is the primary market for such securities, or the last quoted mean price for those securities for which the over-the-counter market is the primary market or for listed securities in which there were no sales. Independent pricing services use information provided by market makers or estimates of market values obtained from yield data relating to investments or securities with similar characteristics. Exchange traded options and futures are valued at the settlement price determined by the relevant exchange. Securities purchased on a when-issued or delayed-delivery basis are marked to market daily until settlement at the forward settlement value. Short-term securities maturing in 60 days or less are valued at amortized cost, if their original term to maturity was 60 days or less, or by amortizing their value on the 61st day prior to maturity, if the original term to maturity exceeded 60 days. The prices used by the Fund to value securities may differ from the value that would be realized if the securities were sold. The Fund's net asset value is determined daily as of the close of regular trading (normally, 4:00 p.m. Eastern time) on the New York Stock Exchange (‘‘NYSE’’) on each day the NYSE is open for business.
(a)  Pre-refunded bonds are collateralized by U.S. Government or other eligible securities which are held in escrow and used to pay principal and interest and retire the bonds at the earliest refunding date (payment date) and/or whose interest rates vary with changes in a designated base rate (such as the prime interest rate).
(b)  144A Security – Security exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be resold in transactions exempt from registration, typically only to qualified institutional buyers. Unless otherwise indicated, these securities are not considered to be illiquid.
(c)  When-issued or delayed-delivery security. To be settled/delivered after July 31, 2006.
(d)  Unsettled security, coupon rate undetermined at July 31, 2006.
(e)  Fair-valued security.
(f)  Residual Interest Municipal Bonds (‘‘RIBS’’)/Residual Interest Tax Exempt Municipal Bonds (‘‘RITES’’) – The interest rate shown bears an inverse relationship to the interest rate on another security or the value of an index.
(g)  Variable Rate Notes – instruments whose interest rates change on specified date (such as a coupon date or interest payment date) and/or whose interest rates vary with changes in a designated base rate (such as the prime interest rate). The interest rate disclosed reflects the rate in effect on July 31, 2006.
(h)  Maturity date shown is date of next put.
(i)  All or partial amount segregated as collateral for futures contracts and options written.
(j)  Non-income producing.
(k)  Security in default.

Glossary:

ACA – insured by American Capital Access Holding Ltd.

AMBAC – insured by American Municipal Bond Assurance Corp.

CP – Certificates of Participation




FGIC – insured by Financial Guaranty Insurance Co.

FSA – insured by Financial Security Assurance, Inc.

GO – General Obligation Bond

GTD – Guaranteed

IBC – Insurance Bond Certificate

MBIA – insured by Municipal Bond Investors Assurance

NR – Not Rated

PSF – Public School Fund

Radian – insured by Radian Guaranty, Inc.

XLCA – insured by XL Capital Assurance

Other Investments:

(1)  Futures contracts outstanding at July 31, 2006:

Type Notional
Amount
(000)
Expiration
Date
Unrealized
Depreciation
Long: Euro 90 day Futures $ 440
6/18/07 $ (114,025
)
  Euro 90 day Futures 440
9/17/07 (87,800
)
  Euro 90 day Futures 440
12/17/07 (81,200
)
  Euro 90 day Futures 440
3/17/08 (76,800
)
Short: U.S. Treasury Bond Futures September 2006 (40
)
9/20/06 (56,563
)
  U.S. Treasury Notes 10 yr. Futures September 2006 (231
)
9/20/06 (131,742
)
     
  ($548,130
)
(2)  Transactions in options written for the three months ended July 31, 2006:

  Contracts Premiums
Options outstanding, April 30, 2006 2,141
$ 544,557
Options written 2,782
404,240
Options expired (1,400
)
(356,388
)
Options terminated in closing transactions (1,577
)
(303,015
)
Options outstanding, July 31, 2006 1,946
$ 289,394



Item 2.    Controls and Procedures

(a) The registrant's President and Chief Executive Officer and Principal Financial Officer have concluded that the registrant's disclosure controls and procedures (as defined in Rule 30a-2(c) under the Investment Company Act of 1940, as amended are effective based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of this document.

(b) There were no significant changes in the registrant's internal controls or in factors that could affect these controls subsequent to the date of their evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses.

Item 3.    Exhibits

(a) Exhibit 99.302 Cert. – Certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002




SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Registrant: PIMCO Municipal Income Fund
By /s/ Brian S. Shlissel
President & Chief Executive Officer

Date: September 26, 2006

By /s/ Lawrence G. Altadonna
Treasurer, Principal Financial & Accounting Officer

Date: September 26, 2006

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dated indicated.

By /s/ Brian S. Shlissel
President & Chief Executive Officer

Date: September 26, 2006

By /s/ Lawrence G. Altadonna
Treasurer, Principal Financial & Accounting Officer

Date: September 26, 2006