UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED
MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number:__811-21180______

_______BlackRock Florida Insured Municipal Income Trust_______
(Exact name of registrant as specified in charter)

100 Bellevue Parkway, Wilmington, DE    19809 
(Address of principal executive offices) 
 
(Zip code) 

Robert S. Kapito, President

BlackRock Florida Insured Municipal Income Trust

_______40 East 52nd Street, New York, NY 10022_______
(Name and address of agent for service)

Registrant's telephone number, including area code:_888-825-2257__________________

Date of fiscal year end:___August 31, 2005

Date of reporting period:__May 31, 2005_________________________________

Item 1. Schedule of Investments.

The registrant’s unaudited schedule of investments as of the close of the reporting period pursuant to Rule 30b1-5 under the Investment Company Act of 1940 is as follows:


PORTFOLIO OF INVESTMENTS
MAY 31, 2005 (Unaudited)

BlackRock Florida Insured Municipal Income Trust (BAF)

      Principal                
        Amount           Option Call    
    Rating1   (000)   Description       Provisions2   Value  
          LONG-TERM INVESTMENTS—156.3%            
            Florida—149.1%            
            Brd. of Ed.,            
    AAA   $ 9,000      GO, Ser. A, 5.00%, 6/01/27, FSA       06/12 @ 101   $ 9,534,780  
    AAA   8,640 3         Lottery Rev., Ser. C, 5.00%, 1/01/22, MBIA       01/13 @ 101   9,274,867  
            Cap. Trust Agcy. Multi-Fam., American Oppty. Proj.,            
    Baa1   1,000      Ser. A, 5.875%, 6/01/38       06/13 @ 102   1,000,000  
    Baa3   990      Ser. C, 7.25%, 6/01/38       06/13 @ 102   978,981  
    NR   3,885   Colonial Cntry. Club Cmnty. Dev. Dist., 6.40%, 5/01/33       05/13 @ 101   4,152,677  
    AAA   7,000   Dept. of Transp., 5.00%, 7/01/27, FSA       07/12 @ 101   7,419,370  
    AAA   8,695   Gainesville Util. Sys., Ser. A, 5.00%, 10/01/33, FSA       10/13 @ 100   9,166,530  
    A   8,500   Highlands Cnty. Hlth. Facs. Auth., Hosp. Adventist/Sunbelt Proj., Ser. A, 6.00%, 11/15/31       11/11 @ 101   9,315,490  
    AAA   7,580   Hillsborough Cnty. Sch. Brd., COP, Ser. A, 5.00%, 7/01/25, MBIA       07/10 @ 100   8,011,908  
            Jacksonville,            
    AAA   8,000      Excise Tax, Ser. B, 5.00%, 10/01/26, AMBAC       10/12 @ 100   8,461,680  
    AAA   9,500      Sales Tax, 5.00%, 10/01/27, MBIA       10/13 @ 100   10,090,615  
    AAA   9,500      Transp., 5.00%, 10/01/31, MBIA       10/11 @ 100   9,917,905  
    NR   2,865   Jacksonville Cap. Impvt., Ser. A, 5.00%, 10/01/30, AMBAC       10/12 @ 100   3,011,803  
    AAA   1,480   Julington Creek Plantation Cmnty. Dev., Assmt. Rev., 5.00%, 5/01/29, MBIA       05/12 @ 101   1,560,986  
    AAA   9,000   Lake Cnty. Sch. Brd., COP, Ser. A, 5.00%, 7/01/28, AMBAC       07/13 @ 100   9,494,910  
    AAA   26,935   Miami Dade Cnty., Spec. Oblig. Rev., Ser. B, Zero Coupon, 10/01/31, MBIA       04/08 @ 28.079   6,576,180  
    AAA   7,975   Orange Cnty., Sales Tax, Ser. B, 5.125%, 1/01/32, FGIC       01/13 @ 100   8,470,567  
    AAA   2,000   Orange Cnty. Sch. Brd., COP, Ser. A, 5.00%, 8/01/27, MBIA       08/12 @ 100   2,101,740  
    AAA   9,250   Orange Cnty. Tourist Dev., Tax Rev., 5.125%, 10/01/30, AMBAC       04/12 @ 100   9,792,235  
    AAA   4,000   Osceola Cnty. Sch. Brd., COP, Ser. A, 5.25%, 6/01/27, AMBAC       06/12 @ 101   4,327,680  
            Palm Bay Util., FGIC,            
    AAA   4,015      Zero Coupon, 10/01/28       No Opt. Call   1,321,778  
    AAA   5,570      Zero Coupon, 10/01/31       No Opt. Call   1,557,205  
    AAA   9,200   Palm Beach Cnty. Sch. Brd., COP, Ser. D, 5.00%, 8/01/28, FSA       08/12 @ 100   9,650,616  
    AA-   5,000   Pinellas Cnty. Hlth. Fac. Auth., Baycare Hlth. Sys. Proj., 5.50%, 11/15/33       05/13 @ 100   5,320,650  
    AAA   9,500   Pinellas Cnty. Swr., 5.00%, 10/01/32, FSA       10/13 @ 100   10,022,025  
    NR   5,000   Polk Cnty. Util. Sys., 5.00%, 10/01/29, FGIC       10/13 @ 100   5,289,150  
    AAA   825 4 Port St. Lucie Util., 5.125%, 9/01/11, MBIA       N/A   913,217  
    AAA   2,945   Sarasota Cnty. Util. Sys., Ser. C, 5.25%, 10/01/22, FGIC       10/12 @ 100   3,209,844  
    NR   3,500   St. Petersburg Pub. Util., Ser. A, 5.00%, 10/01/28, FSA       10/09 @ 101   3,649,205  
    AAA   2,000   Tampa Bay Wtr. Util. Sys., Ser. A, 5.00%, 10/01/28, FGIC       10/11 @ 100   2,099,320  
            Tohopekaliga Wtr. Auth., Ser. B, FSA,            
    AAA   1,980      5.00%, 10/01/21       10/13 @ 100   2,137,885  
    AAA   1,000      5.00%, 10/01/23       10/13 @ 100   1,070,180  
            Vlg. Cmnty. Dev. Dist. Assmt. Rev.,            
    NR5   45      Ser. B, 5.40%, 5/01/07       No Opt. Call   45,486  
    NR5   4,635      No. 5, Spl. Assmt. Rev., Ser. A, 6.50%, 5/01/33       05/13 @ 101   5,024,108  
    AAA   12,000   Vlg. Cntr. Cmnty. Dev. Dist., Ser. A, 5.00%, 11/01/32, MBIA       11/13 @ 101   12,682,200  
                        196,653,773  

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BlackRock Florida Insured Municipal Income Trust (BAF) (continued)

      Principal                
        Amount           Option Call    
    Rating1   (000)   Description       Provisions2   Value  
          Puerto Rico—7.2%            
    BBB   $ 9,405       Children’s Trust Fund, Tobacco Settlement Rev., 5.625%, 5/15/43       05/12 @ 100   $ 9,460,113  
            Total Investments—156.3% (cost $195,671,6126)           $206,113,886  
            Other assets in excess of liabilities—1.3%           1,741,614  
            Preferred shares at redemption value, including dividends payable—(57.6)%           (76,005,207 )
            Net Assets Applicable to Common Shareholders—100%           $131,850,293  

1   Using the higher of S&P’s, Moody’s or Fitch’s rating.  
2   Date (month/year) and price of the earliest optional call or redemption. There may be other call provisions at varying prices at later dates.  
3   Securities, or a portion thereof, pledged as collateral with a value of $1,073,480 on 658 short U.S. Treasury Note futures contracts expiring Sept. 2005. The value of such contracts on May 31, 2005 was $74,528,781, with an unrealized loss of $824,544.  
4   This bond is prerefunded. U.S. government securities, held in escrow, are used to pay interest on this security, as well as retire the bond in full at the date indicated, typically at a premium to par.  
5   Security is deemed to be of investment grade quality by the investment advisor.  
6   Cost for Federal income purposes is $195,671,546. The net unrealized appreciation on a tax basis is $10,442,340 consisting of $10,453,358 gross unrealized appreciation and $11,018 gross unrealized depreciation. 

The value (market value plus accrued interest) of securities that are covered by insurance, which ensures the payment of principal and interest, represent approximately 82.9% of the Trust’s managed assets.

KEY TO ABBREVIATIONS

AMBAC   — American Municipal Bond Assurance Corporation     FSA     — Financial Security Assurance  
COP   — Certificate of Participation     GO     — General Obligation  
FGIC   — Financial Guaranty Insurance Company     MBIA     — Municipal Bond Insurance Association  
                   

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Item 2. Controls and Procedures.

(a) The registrant's principal executive officer and principal financial officer have evaluated the registrant's disclosure controls and procedures within 90 days of this filing and have concluded that the registrant’s disclosure controls and procedures are effective, as of that date, in ensuring that information required to be disclosed by the registrant in this Form N-Q was recorded, processed, summarized, and reported timely.

(b) The registrant's principal executive officer and principal financial officer are aware of no changes in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting.

Item 3. Exhibits.

Separate certifications of the registrant’s principal executive and financial officers pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 are attached as EX-99.CERT.

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)___BlackRock Florida Insured Municipal Income Trust___

By: __/s/ Henry Gabbay_____________________________________________
Name: Henry Gabbay
Title: Treasurer
Date: July 22, 2005

      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 dates indicated.

By: __/s/ Robert S. Kapito_____________________________________________
Name: Robert S. Kapito
Title: Principal Executive Officer
Date: July 22, 2005

By: __/s/ Henry Gabbay_____________________________________________
Name: Henry Gabbay
Title: Principal Financial Officer
Date: July 22, 2005