Ownership Submission
FORM 5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Form 3 Holdings Reported
Form 4 Transactions Reported
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

ANNUAL STATEMENT OF CHANGES IN 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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1. Name and Address of Reporting Person *
WHITNEY SANDRA L
 2. Issuer Name and Ticker or Trading Symbol
UNITIL CORP [UTL] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Corporate Secretary
(Last)
(First)
(Middle)

6 LIBERTY LANE WEST		 3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year)
12/31/2010
(Street)


HAMPTON, NH 03842		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Reporting
(check applicable line)

_X_ Form Filed by One Reporting Person
___ Form Filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned at end of Issuer's Fiscal Year
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Amount (A) or (D) Price
Common stock, no par value 02/15/2010   J(1) 3.766 A $ 21.186 0 D  
Common stock, no par value 02/16/2010   J(2) 50 A $ 21.79 0 D  
Common stock, no par value 05/14/2010   J(3) 3.966 A $ 21.921 0 D  
Common stock, no par value 08/16/2010   J(4) 4.143 A $ 21.317 0 D  
Common stock, no par value 11/15/2010   J(5) 4.017 A $ 22.341 0 D  
Common stock, no par value 03/01/2010   J(6) 17 A $ 22.24 264.141 D  
Common stock, no par value 12/31/2010   J(7) 2.722 A $ 22.07 23.23 I Held in trust (8)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 2270 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned at End of Issuer's Fiscal Year
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
(A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
WHITNEY SANDRA L
6 LIBERTY LANE WEST
HAMPTON, NH 03842		       Corporate Secretary  

Signatures

/s/ Sandra L. Whitney 02/09/2011
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(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) Acquisition pursuant to reinvestment of dividends.
(2) Shares granted pursuant to the Unitil Corporation Restricted Stock Plan on February 16, 2009. Shares represent 25% of total grant and vested on February 16, 2010. The terms of the Unitil Corporation Restricted Stock Plan specify valuation at time of vesting. Vested shares are unrestricted and fully transferable by owner.
(3) Acquisition pursuant to reinvestment of dividends.
(4) Acquisition pursuant to reinvestment of dividends.
(5) Acquisition pursuant to reinvestment of dividends.
(6) Shares granted in connection with a length of service award for 20 years of service to the Company.
(7) Shares were purchased between January 1 - December 31, 2010 at an average price of $22.07 under the terms and conditions of the Unitil Corporation Tax Deferred Savings and Investment Plan.
(8) Shares are held in trust under the terms of the Unitil Corporation Tax Deferred Savings and Investment Plan.

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