nyc774413.htm
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
 
RULE 23C-2 NOTICE OF INTENTION TO REDEEM SECURITIES
 
of
 
BlackRock Insured Municipal Income Trust
100 Bellevue Parkway
Wilmington, DE 19809
(888) 825-2257
 
under the
 
Investment Company Act of 1940
 
Investment Company Act File No. 811-21178
 
 
1.
Title of the class of securities of BlackRock Insured Municipal Income Trust (the "Fund") to be redeemed:
 
Municipal Auction Rate Cumulative Preferred Shares, liquidation preference $25,000 per share, as identified by series and CUSIP in Annex A hereto (the "Shares").
 
2.
The date on which the securities are to be called or redeemed:
 
See Annex A for the dates on which Shares of each series are to be redeemed (the "Redemption Date").
 
3.
The applicable provisions of the governing instrument pursuant to which the securities are to be called or redeemed:
 
The Shares are to be redeemed pursuant to Section 11(a)(i) of the Fund's Statement of Preferences.
 
4.
The principal amount or number of shares and the basis upon which the securities to be redeemed are to be selected:
 
See Annex A for information concerning the number of Shares of each series and the aggregate principal amount of Shares of each series to be redeemed.  The Depository Trust Company (DTC), holder of record of the Shares, determines by lottery how the redemption will be allocated among each participant broker-dealer account that holds Shares and each participant broker-dealer determines how to allocate each redemption among the holders of the Shares held by it.
 
 
 
SIGNATURE

Pursuant to the requirement of Rule 23c-2 of the Investment Company Act of 1940, the Fund has duly caused this Notice of Intention to Redeem Securities to be signed on its behalf by the undersigned on this 2nd day of June, 2008.


   
BLACKROCK INSURED MUNICIPAL INCOME TRUST
  
       
       
   
By:
/s/ Neal J. Andrews
    
   
Name:
Neal J. Andrews
 
  
   
Title:
Chief Financial Officer
 
  



Annex A

Series
CUSIP
Redemption Date
Total Shares to be Redeemed
Aggregate Principal Amount to be Redeemed
F7
092479401
6/30/2008
1,054
$ 26,350,000
M7
092479203
6/24/2008
1,054
$ 26,350,000
R7
092479302
6/27/2008
1,054
$ 26,350,000