8-K

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.   20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported)
 October 1, 2006

GLACIER BANCORP, INC.
(Exact name of registrant as specified in its charter)
Montana
(State or other jurisdiction of incorporation)
000-18911	81-0519541
(Commission File Number)	(IRS Employer Identification No.)
49 Commons Loop Kalispell, Montana 59901
(Address of principal executive offices)  (zip code)
Registrant’s telephone number, including area code: (406) 756-4200

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligations of the registrant under any of the following provisions (see General Instruction A.2 below):

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act of  (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act of  (17 CFR 240.13e-4(c))

Item 8.01 Other Events

          On October 1, 2006, Glacier Bancorp, Inc. (NASDAQ “GBCI”) announced the completion of the acquisition of Citizens Development Company (“Citizens”) for a total purchase price of $78,627,000.  As a result of the merger, the bank subsidiaries of Citizens (Citizens State Bank, Hamilton, Montana; First Citizens Bank of Billings, Billings, Montana; First National Bank of Lewiston, Lewiston, Montana; Western Bank of Chinook, N.A., Chinook, Montana; and First Citizens Bank, N.A., Columbia Falls, Montana) became wholly owned bank subsidiaries of GBCI.  As a condition to closing imposed by the bank regulators, GBCI has entered into a definitive agreement with Bank of the Rockies to divest the Lewistown branch of its subsidiary, Western Security Bank.

          A copy of the press release is attached as Exhibit 99 and is incorporated herein in its entirety by reference.

Item 9.01 Financial Statements and Exhibits

          (d)     Exhibits

(99) Press Release dated October 1, 2006 issued by Glacier  Bancorp, Inc. announcing the completion of the acquisition of  Citizens Development Company.

SIGNATURES

          Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:  October 2, 2006	GLACIER BANCORP, INC.
	By:	/s/  Michael J. Blodnick
		Michael J. Blodnick
		President & Chief Executive Officer

EX-99

Exhibit 99

Glacier Bancorp, Inc. Announces Merger With Citizens Development Company

          KALISPELL, Mont., Oct. 2 /PRNewswire-FirstCall/ -- Glacier Bancorp, Inc. (Nasdaq: GBCI) today announced the completion of the merger with Citizens Development Company, a Billings, Montana-based bank holding company with total assets at December 31, 2005 of $430 million.  As a result of the merger, Citizens’ bank subsidiaries, Citizens State Bank, Hamilton, Montana; First Citizens Bank of Billings, Billings, Montana; First National Bank of Lewiston, Lewiston, Montana; Western Bank of Chinook, N.A., Chinook, Montana; and First Citizens Bank, N.A., Columbia Falls, Montana, became wholly owned subsidiaries of Glacier.  As a condition to closing imposed by the bank regulators, Glacier has entered into a definitive agreement with Bank of the Rockies to divest the Lewistown branch of its subsidiary, Western Security Bank.

          “We are thrilled to have the staff from Citizens Development Company join Glacier.  We are excited for the many opportunities this transaction presents both now and in the future,” said Mick Blodnick, President and Chief Executive Officer of Glacier.  “We hope to begin the integration process immediately and will be working closely with the Citizens staff to achieve that goal.”

          Glacier Bancorp, Inc. is the parent company for ten community banks, including Glacier Bank, Kalispell; Glacier Bank, Whitefish; First Security Bank of Missoula; Valley Bank of Helena; Big Sky Western Bank, Bozeman; and Western Security Bank, Billings, all located in Montana; as well as Mountain West Bank, Coeur d’Alene, with operations in Idaho, Utah and Washington; 1st Bank, Evanston, operating in Wyoming; Citizens Community Bank, Pocatello, operating in Idaho; and First National Bank of Morgan, operating in Utah.

SOURCE  Glacier Bancorp, Inc.
          -0-                                        10/02/2006
          /CONTACT:  Michael J. Blodnick, +1-406-751-4701, or James H. Strosahl, +1-406-751-4702, both for Glacier Bancorp, Inc./