Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  BANK OF AMERICA CORP /DE/
 2. Date of Event Requiring Statement (Month/Day/Year)
01/29/2010		 3. Issuer Name and Ticker or Trading Symbol
BLACKROCK INSURED MUNICIPAL INCOME TRUST [BYM]
(Last)
(First)
(Middle)
BANK OF AMERICA CORPORATE CENTER, 100 N TRYON ST		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

CHARLOTTE, NC 28255		 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Auction Rate Preferred 208 (1)
I
By Subsidiaries

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
BANK OF AMERICA CORP /DE/
BANK OF AMERICA CORPORATE CENTER
100 N TRYON ST
CHARLOTTE, NC 28255		     X    
MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
4 WORLD FINANCIAL CENTER
NORTH TOWER
NEW YORK, NY 10080		     X    
Blue Ridge Investments, L.L.C.
214 NORTH TRYON STREET
CHARLOTTE, NC 28255		     X    

Signatures

Bank of America Corporation and Bank of America, N.A., By:/s/ Angelina L. Richardson, Title: Vice President 02/10/2010
**Signature of Reporting Person Date
Merrill Lynch, Pierce, Fenner & Smith Incorporated, By:/s/ Lawrence Emerson, Title: Attorney-In-Fact 02/10/2010
**Signature of Reporting Person Date
Blue Ridge Investments, L.L.C. By:/s/ Gary Tsuyuki, Title: Managing Director 02/10/2010
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The Auction Rate Preferred Shares ("Shares") reported in Table 1 represent 185 shares beneficially owned by Blue Ridge Investments, L.L.C. ("Blue Ridge"), 22 shares beneficially owned by Bank of America, N.A. ("BANA") and 1 share beneficially owned by Merrill Lynch, Pierce, Fenner & Smith Incorporated ("MLPFS"). Blue Ridge is a wholly owned subsidiary of BANA. MLPFS and BANA are wholly owned subsidiaries of Bank of America Corporation ("Bank of America").
 
Remarks:
The Shares reported herein represent Bank of America's combined holdings in multiple series of auction rate preferred securities of the issuer, which are treated herein as one class of securities in accordance with the Auction Rate Securities---Exemptive Relief no-action letter issued by the Securities and Exchange Commission  (SEC) on September 22, 2008. Bank of America undertakes to provide upon request by the SEC, the issuer or a security holder of the issuer, complete information regarding the number of equity securities of the issuer purchased or sold at each different price and date of all transactions in such securities that occurred after Bank of America became a 10% owner but prior to the date of this filing.

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