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, 2007     
Date of reporting period: 
     May 31, 2007     


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 (unaudited)          
MAY 31, 2007          
BlackRock Florida Insured Municipal Income Trust (BAF)          
(Percentages shown are based on Net Assets)          
                   
                   
                   
  Principal                
  Amount       Option Call        
  (000)    Description    Provisions1     Value   
      LONG-TERM INVESTMENTS—152.8%             
      Florida—150.0%             
      Brd. of Ed.,             
$ 9,000     Sch. Impvts. Misc. Tax GO, Ser. A, 5.00%, 6/01/27, FSA    06/12@ 101    $ 9,334,890   
  8,640     Sch. Imvpts. Misc. RB, Ser. C, 5.00%, 1/01/22, MBIA    01/13@ 101      8,998,387   
  8,695 2 City of Gainesville, Mult. Util. Impvts. RB, Ser. A, 5.00%, 10/01/13, FSA    N/A     9,216,700   
      City of Jacksonville,             
  9,500     Pub. Impvts. Sales Tax RB, 5.00%, 10/01/27, MBIA    10/13@ 100      9,870,025   
  9,500     Pub. Impvts. Sales Tax RB, 5.00%, 10/01/31, MBIA    10/11@ 100      9,714,605   
  8,000     Pub. Impvts. Sales Tax RB, Ser. B, 5.00%, 10/01/26, AMBAC    10/12@ 100      8,229,360   
  2,865     Recreational Fac. Impvts. RB, Ser. A, 5.00%, 10/01/30, AMBAC    10/12@ 100      2,943,014   
      City of Palm Bay, Wtr. Util. Impvts. Wtr. RB,             
  4,015     Zero Coupon, 10/01/28, FGIC    No Opt. Call     1,452,025   
  5,570     Zero Coupon, 10/01/31, FGIC    No Opt. Call     1,745,749   
  500   City of Tampa, Wtr. Util. Impvts. Wtr. RB, 4.625%, 10/01/36, MBIA    10/16@ 100      494,820   
      Cnty. of Miami-Dade,             
  10,000     Recreational Fac. Impvts. Misc. RB, Ser. A, Zero Coupon, 10/01/39, MBIA    10/15@ 28.762      1,926,600   
  10,000     Recreational Fac. Impvts. Misc. RB, Ser. A, Zero Coupon, 10/01/40, MBIA    10/15@ 27.307      1,833,100   
  26,935     Recreational Fac. Impvts. Misc. Taxes RB, Ser. B, Zero Coupon, 10/01/31, MBIA    04/08@ 28.079      7,272,989   
      Cnty. of Orange,             
  9,250 2   Recreational Fac. Impvts. Misc. RB, 5.125%, 4/01/12, AMBAC    N/A     9,748,482   
  7,975     Sales Tax RB, Ser. B, 5.125%, 1/01/32, FGIC    01/13@ 100      8,314,257   
  9,500   Cnty. of Pinellas, Swr. Impvts. RB, 5.00%, 10/01/32, FSA    10/13@ 100      9,870,025   
  5,000   Cnty. of Polk, Wtr. Util. Impvts. Wtr. RB, 5.00%, 10/01/29, FGIC    10/13@ 100      5,194,750   
  2,945   Cnty. of Sarasota, Wtr. RB, Ser. C, 5.25%, 10/01/22, FGIC    10/12@ 100      3,108,477   
  3,785   Colonial Cntry. Club Cmnty. Dev. Dist., Econ. Impvts. SA, 6.40%, 5/01/33    05/13@ 101      4,085,605   
  1,000   Fleming Island Plantation, Cmnty. Dev. Dist. SA, 4.50%, 5/01/27, MBIA    05/17@ 100      978,080   
  7,000   Florida, Fuel Sales Tax GO, 5.00%, 7/01/27, FSA    07/12@ 101      7,263,410   
  8,500 2 Highlands Cnty. Hlth. Facs. Auth., Hlth., Hosp. & Nursing Home RB, Adventist Hlth.             
        Sys./Sunbelt Proj., Ser. A, 6.00%, 11/15/11    N/A     9,273,075   
  7,580   Hillsborough Cnty. Sch. Brd., Lease Renewal COP, Ser. A, 5.00%, 7/01/25, MBIA    07/10@ 100      7,773,214   
  1,000   Jacksonville Hlth. Facs. Auth., Hlth., Hosp. & Nursing Home Impvts. RB, Baptist             
        Med. Ctr. Proj., Ser. A, 5.00%, 8/15/37    08/17@ 100      1,014,300   
  2,000   JEA, Wtr. Util. Impvts. Wtr. RB, Ser. A, 4.75%, 10/01/41, MBIA    04/11@ 100      2,020,120   
  1,480   Julington Creek Plantation, Cmnty. Dev. Dist. SA, 5.00%, 5/01/29, MBIA    05/12@ 101      1,524,992   
  9,000   Lake Cnty. Sch. Brd., Sch. Impvts. Lease Renewal COP, Ser. A, 5.00%,            
        7/01/28,  AMBAC   07/13@ 100      9,270,630   
  1,400   Marion Cnty. Hosp. Dist., Hlth., Hosp. & Nursing Home RB, Munroe Regl. Hlth. Sys.             
        Proj., 5.00%, 10/01/29    10/17@ 100      1,417,948   
  1,000   Miami-Dade Cnty. Edl. Facs. Auth., Univ. & Coll. Impvts. RB, Univ. of Miami Proj.,             
        Ser. A, 5.00%, 4/01/37, AMBAC   04/17@ 100      1,043,360   
  2,000   Orange Cnty. Sch. Brd., Sch. Impvts. Lease Renewal COP, Ser. A, 5.00%,            
        8/01/27,  MBIA   08/12@ 100      2,052,020   
  4,000 2 Osceola Cnty. Sch. Brd., Sch. Impvts. Lease Approp. COP, Ser. A, 5.25%,            
        6/01/12,  AMBAC   N/A      4,270,520   
  9,200   Palm Beach Cnty. Sch. Brd., Lease Renewal COP, Ser. D, 5.00%, 8/01/28, FSA    08/12@ 100      9,439,292   
  5,000 2 Pinellas Cnty. Hlth. Fac. Auth., Hlth., Hosp. & Nursing Home Impvts. RB, Baycare             
        Hlth. Sys., Inc. Proj., 5.50%, 5/15/13    N/A     5,399,350   
  825 2 Port St. Lucie, Swr. Impvts. Mult. Util. RB, 5.125%, 9/01/11, MBIA    N/A     865,268   
  950   South Florida Wtr. Mgmt. Dist., Wtr. Util. Impvts. Lease Approp. COP, 5.00%,             
        10/01/36, AMBAC   10/16@ 100      987,288   
  3,500 2 St. Petersburg, Wtr. Util. Impvts. Wtr. RB, Ser. A, 5.00%, 10/01/09, FSA    N/A     3,627,995   

1


BlackRock Florida Insured Municipal Income Trust (BAF) (continued)          
Percentages shown are based on Net Assets)          
                   
  Principal                
  Amount       Option Call        
  (000)   Description    Provisions1     Value  
      Florida— (cont'd)             
$  1,000   Tohopekaliga Wtr. Auth., Wtr. Util. Impvts. Wtr. RB, Ser. B, 5.00%, 10/01/23, FSA    10/13@ 100    $  1,042,900  
  3,745   Vlg. Cmnty. Dev. Dist. No. 5, Pub. Impvts. SA, Ser. A, 6.50%, 5/01/33    05/13@ 101      4,051,416  
  10,000   Vlg. Ctr. Cmnty. Dev. Dist., Recreational Fac. Impvts. RB, Ser. A, 5.00%, 11/01/32,             
        MBIA   11/13@ 101        10,345,700  
                197,014,738  
      Puerto Rico—2.8%             
  3,405   Children's Trust Fund, Tobacco Settlement Funded RB, 5.625%, 5/15/43    05/12@ 100      3,581,549  
      Total Long-Term Investments (cost $193,210,626)          200,596,287  
      SHORT-TERM INVESTMENTS—3.9%             
      Florida—0.8%             
  900 3 City of Gainesville, Multi Util. RB, Ser. A, 3.90%, 6/01/07, FRDD, AMT    N/A     900,000  
  100 3 Pinellas Cnty. Hlth. Fac. Auth., Hlth., Hosp. & Nursing Home RB, All Children's             
        Hosp. Proj., 3.90%, 6/01/07, AMBAC, FRDD, AMT    N/A     100,000  
                1,000,000  
  Shares                
  (000)                
      Money Market Fund—3.1%             
  4,134 4,5 CMA Florida Mun. Money Fund, 3.14%    N/A     4,133,565  
      Total Short-Term Investments (cost $5,133,565)          5,133,565  
      Total Investments —156.7% (cost $198,344,1916)        $  205,729,852  
      Other assets in excess of liabilities —1.2%          1,616,047  
      Preferred shares at redemption value, including dividends payable —(57.9)%          (76,023,426 ) 
      Net Assets Applicable to Common Shareholders —100%        $  131,322,473  

__________
1      Date (month/year) and price of the earliest optional call or redemption. There may be other call provisions at varying prices at later dates.
 
2      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.
 
3      For purposes of amortized cost valuation, the maturity date of this instrument is considered to be the earlier of the next date on which the security can be redeemed at par, or the next date on which the rate of interest is adjusted. Rate shown is rate as of May 31, 2007.
 
4      Represents an investment in an affiliate.
 
5      Represents current yield as of May 31, 2007.
 
6      Cost for federal income tax purposes is $198,344,123. The net unrealized appreciation on a tax basis is $7,385,729, consisting of $7,424,494 gross unrealized appreciation and $38,765 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 86.0% of the Trust's managed assets.

AMBAC    17.9%   
FGIC    9.7%   
FSA    24.4%   
MBIA    32.0%   
Other    2.0%   

 

KEY TO ABBREVIATIONS

AMBAC    American Municipal Bond Assurance Corp. FSA    Financial Security Assurance 
AMT    Subject to Alternative Minimum Tax  GO    General Obligation 
COP    Certificate of Participation  MBIA    Municipal Bond Insurance Assoc. 
FGIC    Financial Guaranty Insurance Co.  RB    Revenue Bond 
FRDD    Floating Rate Daily Demand  SA    Special Assessment 
 


2


Item 2. Controls and Procedures.

(a) The Registrant's principal executive and principal financial officers have evaluated the Registrant's disclosure controls and procedures within 90 days of this filing and have concluded, as of that date, that the Registrant’s disclosure controls and procedures were reasonably designed to ensure that information required to be disclosed by the Registrant in this Form N-Q was recorded, processed, summarized, and reported within the required time periods and that information to be disclosed by the Registrant in this Form N-Q was accumulated and communicated to the Registrant’s management, including its principal executive and principal financial officers, as appropriate, to allow timely decisions regarding required disclosure.

(b) There were no changes in the Registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17 CFR 270.30a -3(d)) that occurred during the Registrant's last fiscal quarter that have materially affected, or are 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/ Donald C. Burke
Name: Donald C. Burke
Title: Treasurer and Principal Financial Officer
Date: July 25, 2007

          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: President and Principal Executive Officer
Date: July 25, 2007
   
By: 
     /s/ Donald C. Burke
Name: Donald C. Burke
Title: Treasurer and Principal Financial Officer
Date: July 25, 2007