FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 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 * DICERBO NICHOLAS A   2. Issuer Name and Ticker or Trading Symbol COMMUNITY BANK SYSTEM INC [CBU] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 2835 WEST RIVER ROAD 3. Date of Earliest Transaction (Month/Day/Year) 01/18/2006 (Street) OLEAN, NY 14760 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(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 Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock               78,802.8224 (1) D   Common Stock               89,181.3406 (2) I By Law Firm (Partner) Common Stock               1,704.3478 (3) I By Spouse

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Stock Option

$ 23.74

01/18/2006

A

3,298

01/18/2006

01/18/2016

Common Stock

3,298

$ 23.74

3,298

D

Phantom Stock (Stock Balance Plan)

$ 0

01/18/2006

A

1,084.37

(4)

(4)

Common Stock

1,084.37

$ 0

12,187.89

D

Deferred Stock (Deferred Comp.)

$ 0

01/18/2006

A

2,659.89

(5)

(5)

Common Stock

2,659.89

$ 0

28,368.4608

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
DICERBO NICHOLAS A 2835 WEST RIVER ROAD OLEAN, NY 14760	X

Signatures

Donna J. Drengel, as attorney-in-fact, pursuant to a power of attorney		01/20/2006
**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)	Includes 603.855 shares acquired on January 10, 2006 under the Community Bank System, Inc. Dividend Reinvestment Plan.
(2)	Includes 620.12 shares acquired on January 10, 2006 under the Community Bank System, Inc. Dividend Reinvestment Plan.
(3)	Includes 9.851 shares acquired on January 10, 2006 under the Community Bank System, Inc. Dividend Reinvestment Plan.
(4)	Phantom Stock (Stock Balance Plan) may be exercised upon the later of the reporting person's attainment of age 55 or termination of service on Community Bank System, Inc.'s Board of Directors.
(5)	Awards relating to the Deferred Stock units (Deferred Comp. Plan) may be exercised upon the reporting person's attainment of age 64.

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