ICF International to Present at the William Blair 30th Annual Growth Stock Conference

ICF International (NASDAQ:ICFI), a leading provider of consulting services and technology solutions to government and commercial clients, announced its participation at the William Blair 30^th Annual Growth Stock Conference, to be held at the Four Seasons Hotel in Chicago. Sudhakar Kesavan, Chief Executive Officer, will present at 2:50 p.m. Central Time on Tuesday, June 15, 2010.

A live webcast of the presentation will be available at http://www.wsw.com/webcast/blair36/icfi/. A replay will be available for 30 days following the conference.

About ICF International

ICF International (NASDAQ:ICFI) partners with government and commercial clients to deliver professional services and technology solutions in the energy and climate change; environment and infrastructure; health, human services, and social programs; and homeland security and defense markets. The firm combines passion for its work with industry expertise and innovative analytics to produce compelling results throughout the entire program life cycle, from research and analysis through implementation and improvement. Since 1969, ICF has been serving government at all levels, major corporations, and multilateral institutions. More than 3,500 employees serve these clients worldwide. ICF's Web site is http://www.icfi.com/.

Caution Concerning Forward-looking Statements

Statements that are not historical facts and involve known and unknown risks and uncertainties are "forward-looking statements" as defined in the Private Securities Litigation Reform Act of 1995. Such statements may concern our current expectations about our future results, plans, operations and prospects and involve certain risks, including those related to the government contracting industry generally; our particular business, including our dependence on contracts with U.S. federal government agencies; and our ability to acquire and successfully integrate businesses. These and other factors that could cause our actual results to differ from those indicated in forward-looking statements are included in the "Risk Factors" section of our securities filings with the Securities and Exchange Commission. The forward-looking statements included herein are only made as of the date hereof, and we specifically disclaim any obligation to update these statements in the future.