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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

Name of Fund: BlackRock Florida Insured Municipal Income Trust (BAF)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: Donald C. Burke, Chief Executive Officer, BlackRock Florida Insured Municipal Income Trust, 800 Scudders Mill Road, Plainsboro, NJ, 08536. Mailing address: P.O. Box 9011, Princeton, NJ, 08543-9011

Registrant’s telephone number, including area code: (800) 882-0052, Option 4

Date of fiscal year end: 08/31/2008

Date of reporting period: 03/01/2008 – 05/31/2008


Item 1 –    Schedule of Investments

BlackRock Florida Insured Municipal Income Trust          
Schedule of Investments May 31, 2008 (Unaudited) (Percentages shown are based on Net Assets)
      Par      
    Municipal Bonds (000)     Value
Florida - 124.9%   Brevard County, Florida, Health Facilities Authority, Healthcare Facilities          
    Revenue Bonds (Health First Inc. Project), 5%, 4/01/36 $ 2,000   $ 1,882,580
    Broward County, Florida, School Board, COP, VRDN, Series D,          
    1.51%, 7/01/29 (a)(b)   4,500     4,500,000
    Colonial Country Club Community Development District, Florida, Special          
    Assessment Revenue Bonds, 6.40%, 5/01/33   3,735     3,800,848
    Florida State Board of Education, Lottery Revenue Bonds,          
    Series C, 5%, 1/01/22 (c)   8,640     8,902,570
    Florida State Department of Transportation, GO, Refunding,          
    5%, 7/01/27 (a)   7,000     7,176,470
    Gainesville, Florida, Utilities System Revenue Bonds, Series A, 5%,          
    10/01/13 (a)(d)   2,500     2,728,000
    Highlands County, Florida, Health Facilities Authority, Hospital Revenue          
    Bonds (Adventist Health System), Series A, 6%, 11/15/11 (d)   8,500     9,427,520
    Highlands County, Florida, Health Facilities Authority, Hospital Revenue          
    Bonds (Adventist Health System), Series C, 5.25%, 11/15/36   2,500     2,456,425
    Hillsborough County, Florida, Aviation Authority, Revenue Refunding          
    Bonds, Series D, 5.50%, 10/01/26 (e)   1,295     1,375,691
    Hillsborough County, Florida, IDA, PCR, Refunding (Tampa Electric          
    Company Project), Series B, 5.15%, 9/01/25   500     508,465
    Hillsborough County, Florida, School Board, COP, Refunding,          
    Series A, 5%, 7/01/25 (c)   7,580     7,737,285
    Jacksonville, Florida, Excise Taxes Revenue Bonds, Series B, 5%,          
    10/01/26 (f)   8,000     8,073,920
    Julington Creek Plantation Community Development District, Florida,          
    Special Assessment Refunding Bonds, 5%, 5/01/29 (c)   1,480     1,482,501
    Lake County, Florida, School Board, COP, Series A, 5%, 7/01/28 (f)   9,000     8,976,960
    Miami-Dade County, Florida, School Board, COP, Refunding, Series B,          
    5.25%, 5/01/30 (e)   1,500     1,531,335
    Miami-Dade County, Florida, Special Obligation Revenue Bonds,          
    Sub-Series A, 5.26%, 10/01/39 (c)(g)   10,000     1,652,200
    Miami-Dade County, Florida, Special Obligation Revenue Bonds,          
    Sub-Series A, 5.26%, 10/01/40 (c)(g)   10,000     1,555,100
    Miami-Dade County, Florida, Special Obligation Revenue Bonds,          
    Sub-Series B, 5.17%, 10/01/31 (c)(g)   26,935     7,497,357
    Miami, Florida, Special Obligation Revenue Bonds (Street and Sidewalk          
    Improvement Program), 5.25%, 1/01/28 (c)   5,535     5,715,773

Portfolio Abbreviations
To simplify the listings of BlackRock Florida Insured Municipal Income Trust's portfolio holdings in the Schedule of Investments, we have abbreviated the names of many of the securities according to the list below. 
COP   Certificates of Participation  
GO   General Obligations Bonds  
IDA   Industrial Development Authority  
PCR   Pollution Control Revenue Bonds  
VRDN   Variable Rate Demand Notes  

1

BlackRock Florida Insured Municipal Income Trust          
Schedule of Investments May 31, 2008 (Unaudited) (Percentages shown are based on Net Assets)
        Par      
    Municipal Bonds   (000)     Value
    Miami, Florida, Special Obligation Revenue Bonds (Street and Sidewalk          
    Improvement Program), 5%, 1/01/37 (c) $ 2,000   $ 2,008,980
    Orange County, Florida, Educational Facilities Authority, Educational          
    Facilities Revenue Bonds (Rollins College Project), 5.25%, 12/01/27 (f)   1,335     1,374,249
    Orange County, Florida, Health Facilities Authority, Hospital Revenue          
    Refunding Bonds (Orlando Regional Healthcare), Series B,          
    5.25%, 12/01/29 (a)   1,500     1,546,245
    Orange County, Florida, Sales Tax Revenue Refunding Bonds, Series B,          
    5.125%, 1/01/32 (h)   7,975     8,136,095
    Orange County, Florida, School Board, COP, Series A, 5%, 8/01/27 (c)   2,000     2,016,320
    Orange County, Florida, Tourist Development, Senior Lien Tax Revenue          
    Bonds, 5.125%, 4/01/12 (d)(f)   9,250     9,970,853
    Orange County, Florida, Tourist Development, Tax Revenue Refunding          
    Bonds, 5%, 10/01/29 (f)   1,600     1,608,672
    Palm Bay, Florida, Utility System Improvement Revenue Bonds, 5.47%,          
    10/01/28 (g)(h)   4,015     1,343,339
    Palm Bay, Florida, Utility System Improvement Revenue Bonds, 5.48%,          
    10/01/31 (g)(h)   5,570     1,542,333
    Pasco County, Florida, School Board, COP, Series A, 5%, 8/01/27 (c)(h)   5,815     5,908,680
   

Pinellas County, Florida, Health Facilities Authority Revenue Bonds

          
    (BayCare Health System Inc.), 5.50%, 5/15/13 (d)   5,000     5,538,550
    Polk County, Florida, Utility System Revenue Bonds, 5%,          
    10/01/29 (c)(h)   5,000     5,041,600
    Saint Johns County, Florida, Ponte Vedra Utility System Revenue Bonds,          
    5%, 10/01/37 (a)   2,600     2,626,884
    Sarasota County, Florida, Utilities System Revenue Refunding Bonds,          
    Series C, 5.25%, 10/01/22 (h)   2,945     3,084,092
    Sunrise, Florida, Utility System Revenue Refunding Bonds,          
    5%, 10/01/28 (f)   5,000     5,088,550
    Tohopekaliga, Florida, Water Authority, Utility System Revenue Bonds,          
    Series B, 5%, 10/01/23 (a)   1,000     1,045,130
    Village Center Community Development District, Florida, Recreational          
    Revenue Bonds, Series A, 5%, 11/01/32 (c)   10,000     10,121,600
    Village Community Development District Number 5, Florida, Special          
    Assessment Bonds, Series A, 6.50%, 5/01/33   3,520     3,594,096
    Total Municipal Bonds          
    (Cost - $155,995,851) - 124.9%         158,577,268
    Municipal Bonds Transferred to Tender Option Bond Trusts (i)          
Florida - 35.5%   Florida State Board of Education, Series A, 5%, 6/01/27 (a)   9,000     9,223,920
    Jacksonville, Florida, Health Facilities Authority, Hospital Revenue Bonds          
    (Baptist Medical Center Project), 5%, 8/15/37 (a)   1,000     1,010,819
    Jacksonville, Florida, Sales Tax Revenue Bonds, 5%, 10/01/27 (c)   3,940     4,043,583
    Jacksonville, Florida, Transport Revenue Bonds, 5%, 10/01/31 (c)   9,500     9,560,293
    Orlando, Florida, Senior Tourist Development Tax Revenue Bonds          
    (6th Cent Contract Payments), Series A, 5.25%, 11/01/38 (e)   2,200     2,280,982

2

BlackRock Florida Insured Municipal Income Trust            
Schedule of Investments May 31, 2008 (Unaudited) (Percentages shown are based on Net Assets)
        Par        
    Municipal Bonds Transferred to Tender Option Bond Trusts (i)   (000)     Value  
    Palm Beach County Florida, School Board , COP, Revenue Refunding            
    Bonds, Series D, 5%, 8/01/28 (a) $ 9,200   $ 9,294,306  
    Pinellas County Florida, Sewer Revenue Bonds, 5%, 10/01/32 (a)   9,500     9,663,875  
    Total Municipal Bonds Transferred to Tender Option Bond            
    Trusts (Cost - $44,481,864) - 35.5%         45,077,778  
    Short-Term Securities   Shares        
    CMA Florida Municipal Money Fund, 1.02% (j)(k)   29,637,617     29,637,617  
    Total Short-Term Securities            
    (Cost - $29,637,617) - 23.4%         29,637,617  
    Total Investments (Cost - $230,115,332*) - 183.8%         233,292,663  
    Other Assets Less Liabilities - 1.0%         1,320,150  
    Liability for Trust Certificates, Including            
    Interest Expense and Fees Payable - (24.9%)         (31,622,532 )
    Preferred Shares, at Redemption Value - (59.9%)         (76,032,345 )
    Net Assets Applicable to Common Shares - 100.0%       $ 126,957,936  

* The cost and unrealized appreciation (depreciation) of investments as of May 31, 2008, as computed for federal income tax purposes, were as follows:


  Aggregate cost   $ 199,106,915  
  Gross unrealized appreciation   $ 3,696,848  
  Gross unrealized depreciation     (1,121,100 )
  Net unrealized appreciation   $ 2,575,748  

(a)        FSA Insured.
   
(b) Variable rate security. Rate shown is as of report date. Maturity shown is the final maturity date.
   
(c) MBIA Insured.
   
(d) U.S. government securities, held in escrow, are used to pay interest on this security as well as to retire the bond in full at the date indicated, typically at a premium to par.
   
(e) Assured Guaranty Insured.
   
(f) AMBAC Insured.
   
(g) Represents a zero coupon bond; the interest rate shown reflects the effective yield at the time of purchase.
   
(h) FGIC Insured.
   
(i) Securities represent bonds transferred to a tender option bond trust in exchange for which the Trust acquired residual interest certificates. These securities serve as collateral in a financing transaction.
   
(j) Investments in companies considered to be an affiliate of the Trust, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, were as follows:
   
    Net   Dividend
  Affiliate Activity   Income
  CMA Florida Municipal Money Fund   24,568,239   $ 83,666
(k) Represents the current yield as of report date.          
   • Forward interest rate swaps outstanding as of May 31, 2008 were as follows:
    Notional      
    Amount   Unrealized
    (000)   Appreciation
  Pay a fixed rate of 3.542% and receive a floating rate          
  based on 1-week (SIFMA) Municipal Swap Index rate          
  Broker, Citibank NA          
  Expires June 2023 $ 3,750   $ 50,914

3


Item 2 –   Controls and Procedures
     
2(a) –   The registrant’s principal executive and principal financial officers or persons performing similar functions have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”)) are effective as of a date within 90 days of the filing of this report based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act and Rule 13a-15(b) under the Securities Exchange Act of 1934, as amended.
 
2(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) 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
 
    Certifications – Attached hereto
 
    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.
 
    BlackRock Florida Insured Municipal Income Trust
 
    By:   /s/ Donald C. Burke    
          Donald C. Burke
          Chief Executive Officer of
          BlackRock Florida Insured Municipal Income Trust
 
    Date: July 18, 2008
 
    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/ Donald C. Burke    
          Donald C. Burke
           Chief Executive Officer (principal executive officer) of
          BlackRock Florida Insured Municipal Income Trust
 
    Date: July 18, 2008
 
    By:   /s/ Neal J. Andrews    
         Neal J. Andrews
         Chief Financial Officer (principal financial officer) of
         BlackRock Florida Insured Municipal Income Trust
 
    Date: July 18, 2008