Frontier Financial Corporation Announces Increased 3rd Quarter 2005 Cash Dividend and Opening of 40th Office

The Board of Directors of Frontier Financial Corporation
(Nasdaq:FTBK), have declared a $.16 per share third quarter cash
dividend to shareowners of record as of July 11, 2005, and payable
July 25, 2005.
   "This represents a 23.1% increase over the third quarter of 2004,
and a 14.3% increase over the 2nd quarter 2005 cash dividend paid.
This is the twenty-third consecutive quarter in which the cash
dividend has increased. Frontier paid a cash dividend of $.14 per
share, adjusted for the 3-for-2 stock split paid on May 16, 2005, to
shareowners in the second quarter of 2005," said Mike Clementz,
President and CEO.
   In addition, Frontier hit a milestone opening its 40th branch
office this week located at 617 South Third Street, Suite B, Renton.
William LeBlanc, Vice President and Manager of the office, has over 40
years experience in banking.
   Frontier is a Washington-based financial holding company providing
financial services through its commercial bank subsidiary, Frontier
Bank. Frontier offers a wide range of financial services to businesses
and individuals in its market area, including investment and insurance
products.

   Information herein may contain forward-looking statements within
the meaning of the Private Securities Litigation Reform Act of 1995. A
variety of factors could cause Frontier Financial Corporation's actual
results to differ from those expected at the time of this release.
Investors are encouraged to read the SEC report of Frontier,
particularly its Form 10-K for the Fiscal Year Ended December 31,
2004, for meaningful cautionary language discussion why actual results
may vary from those anticipated by management.